# Truelist

> Truelist is an email validation platform that layers SMTP checks, automated browser verification, and third-party data to resolve catch-all addresses that other verifiers return as unknown, and sells the result either as non-expiring credits from $1.40 per thousand down to $0.70 per thousand or as a flat unlimited plan from $799 per month. Standard validation costs one credit, the Enhanced Validation pass that resolves catch-alls costs three and only fires when the standard check gives up, and the platform ships an API, SDKs, an MCP server, a Chrome extension, recurring scheduled validation, and connectors for Mailchimp, Klaviyo, HubSpot, Zapier, and Make.

- Category: Email Verification (https://saastracker.org/categories/email-verification)
- Website: https://truelist.io
- Starting price: $0 for 100 validations, then $1.40 per 1,000 credits pay-as-you-go, or $799 per month unlimited
- Free plan: Free forever: 100 validations, standard plus enhanced catch-all resolution, syntax, DNS and SMTP checks, one team member, no credit card.
- Free trial: No time-limited trial; the free plan with 100 validations including enhanced catch-all resolution is the evaluation path
- Founded: 2024, HQ: United States (distributed), Ownership: Privately held and independently operated
- Profile last reviewed: 2026-08-22
- Canonical profile: https://saastracker.org/products/truelist

## Overview

Truelist was built by two people who had already been on the other side of the problem. Grant Ammons was head of engineering at ConvertKit, an ESP whose entire business depends on customers not sending to dead addresses, and Corey Haines spent nearly a decade in startup marketing where bounce rates are somebody's actual job. The product they shipped reflects that vantage point: it treats the catch-all unknown as a defect rather than an acceptable output, and it treats per-credit metering as a tax on doing the right thing.

The technical position is the interesting one. Where most verifiers stop the moment a domain answers accept-all, Truelist runs what it calls Enhanced Validation, combining SMTP behaviour, automated browser checks against provider-side signals, and third-party data cross-referencing to decide whether a specific mailbox actually exists. It claims up to twice the accuracy of standard providers on those cases. Crucially the enhanced pass is not applied blindly: it only runs when the standard check returns unknown, and it costs three credits instead of one, so you pay the premium precisely on the addresses where it earns its keep.

Commercially there are two doors. The credit ladder is one of the cheapest published anywhere, running $1.40 per thousand up to 10,000 addresses and falling to $0.70 per thousand up to a million, with credits that never expire. The unlimited plans are the more unusual offer: $799 to $999 per month depending on commitment length, covering unlimited standard validations plus 10,000 enhanced catch-all resolutions a month, deliverability monitoring, API access, and unlimited team members. For anyone verifying above roughly a million addresses a month, that flat rate is dramatically cheaper than metered pricing anywhere in the category.

The compliance story is stronger than the company's age would suggest. Truelist publishes SOC 2 Type II, ISO 27001 alignment, TLS 1.2 or higher encryption, and GDPR compliance on the front page, with SAML single sign-on, a contractual SLA, dedicated support, and white labelling reserved for Enterprise from $2,000 a month. The obvious caveat is that this is a very young, very small company selling flat-rate unlimited plans, which is a business model that only survives if the maths holds at scale.

## How it works

1. You upload a CSV, XLS, or XLSX file of up to 10MB in the web app, connect through Zapier, Make, or Clay, or call the API directly. The free plan includes 100 validations with no credit card so you can test before spending.

2. Every address goes through the standard layer first: syntax validation, DNS and MX resolution, an SMTP mailbox check, and detection of disposable providers, role accounts, spam traps, bots, and accept-all domains. That pass costs one credit.

3. When the standard pass cannot reach a verdict, typically because the domain accepts everything, Enhanced Validation runs automatically. It combines SMTP signals, automated browser checks, and third-party data cross-referencing to resolve the address to valid or invalid, and costs three credits. Because it only triggers on unknowns, the blended cost of a mostly clean list stays close to one credit per address.

4. Results come back as a segmentable report with bounce risk, reason codes such as mailbox not found, domain quality, and overall list health, and can be exported or synced back to an ESP, CRM, or cold outreach tool. Recurring Validation re-checks a list on a schedule so hygiene runs without a human, and the MCP server exposes the same capability to AI assistants that want to validate addresses as part of an agentic workflow.

## Best for

Outbound and lifecycle teams that hit accept-all domains constantly and refuse to delete the risky bucket, plus any team validating above about half a million addresses a month, where Truelist's flat unlimited plan collapses a metered bill into a fixed line item.

## Not the right fit for

- Buyers who need a long operating history and financial stability before signing; Truelist launched publicly in late 2024 and is a two-founder company selling flat-rate unlimited plans, which is the model most exposed to a bad month.
- Anyone verifying a few hundred addresses a year, who should use the free 100 validations and then a pay-as-you-go competitor with a smaller minimum rather than opening an account they will forget about.
- Teams that want a full deliverability suite; there is deliverability monitoring on the unlimited plans but no warmup, no seed-list inbox placement testing, and no DMARC reporting.
- Consumer newsletter operators on mostly Gmail and Yahoo lists, who will never trigger the Enhanced Validation path and are therefore paying for a differentiator they cannot use.
- Organisations that treat any inferred verdict on an unconfirmable mailbox as unacceptable; Enhanced Validation is a probabilistic answer derived from cross-referenced signals, not a delivery receipt.

## Features

### Catch-all resolution

The reason Truelist exists, priced so you only pay for it when it fires.

- **Enhanced Validation**: A multi-strategy pass combining SMTP checks, automated browser verification, and third-party data cross-referencing that resolves accept-all addresses to valid or invalid where a single SMTP handshake cannot. The vendor claims up to twice the accuracy of standard providers on these cases.
- **Triggered only on unknowns**: Enhanced Validation runs automatically but only when standard validation returns unknown, so a clean list never incurs the surcharge and a dirty one only incurs it on the addresses that need it.
- **Three-credit surcharge, published clearly**: Standard validation is one credit and enhanced resolution is three, stated on the pricing page rather than buried, which makes the blended cost of a mixed list straightforward to model in advance.
- **Included on the free plan**: The 100 free validations include enhanced catch-all resolution, so you can test the actual differentiator without paying, which very few competitors allow.
- **Enhanced allowance on unlimited plans**: Unlimited plans include 10,000 enhanced catch-all resolutions per month alongside genuinely unlimited standard validations, which is the cap that defines the real value of that tier.

### Standard verification layers

The unglamorous checks every verifier needs, done properly.

- **Syntax and format validation**: Catches malformed addresses before any network work happens, which removes a meaningful slice of a decayed list for free.
- **DNS and MX record checks**: Confirms the domain resolves and that a mail exchanger is actually listening, filtering parked and expired domains.
- **SMTP mailbox verification**: A live handshake with the receiving server to confirm the specific mailbox exists on domains that answer honestly.
- **Disposable and temporary address detection**: Flags throwaway providers used to farm trials and discounts, which are technically deliverable and commercially worthless.
- **Spam trap and bot detection**: Identifies addresses planted to catch senders with poor list hygiene, which are the single most damaging thing on a list because hitting one can cost you an entire sending reputation.
- **Role account identification**: Flags shared mailboxes such as info@, sales@, and support@ so you can decide whether to mail them rather than discovering their engagement rate later.
- **Accept-all domain flagging**: Marks the domains that will answer yes to anything, which is the input to the Enhanced Validation decision rather than the end of the process.

### Developer surface and automation

An unusually complete technical stack for a company this young.

- **Developer API**: REST API for single and bulk validation, documented publicly with a status page, covering both the standard and enhanced paths.
- **SDKs and libraries**: Published client libraries rather than a bare HTTP reference, which shortens integration work for teams embedding validation in a signup flow.
- **MCP server**: A Model Context Protocol endpoint so AI assistants and agentic pipelines can validate addresses directly, which matters as more list building moves into agent-driven enrichment.
- **Recurring Validation**: Scheduled re-validation of a list so decayed addresses are caught continuously rather than in an annual cleanup, which is the difference between hygiene as a process and hygiene as a project.
- **Real-time form validation**: Point-of-capture checking on signup and import flows so bad addresses never reach the database, aimed particularly at SaaS platforms validating their own users' uploads.
- **Chrome extension**: Browser-side single verification for the ad hoc check that would otherwise mean opening the web app.

### Reporting and list intelligence

Enough diagnostic detail to act on rather than a pass or fail count.

- **List health scoring**: An overall health percentage with ok, risky, invalid, and unknown counts, so the state of a list is legible at a glance before you decide to send.
- **Top failure reasons**: Breaks down why addresses failed, such as mailbox not found or catch-all, which tells you whether the problem is your source or your age.
- **Bounce risk and domain quality**: Per-address bounce risk and per-domain quality signals so a segment can be assembled by risk tolerance rather than by a binary verdict.
- **Deliverability monitoring**: Included on unlimited plans, extending the product past one-off cleaning into ongoing visibility of sending health.

### Commercial terms and compliance

Non-expiring credits, a flat unlimited option, and a certification set that punches above the company's age.

- **Credits never expire**: Pay-as-you-go credits carry forward indefinitely with volume discounts applied automatically as your cumulative usage crosses each tier.
- **Unlimited plans**: $999 per month on a three-month commitment, $899 on six months, and $799 on twelve, each including unlimited standard validations, 10,000 enhanced resolutions per month, API access, deliverability monitoring, and unlimited team members.
- **SOC 2 Type II and ISO 27001**: Published on the front page alongside TLS 1.2 or higher encryption and GDPR compliance, which is a stronger posture than most independent verifiers of any size.
- **Enterprise tier with SLA and SSO**: From $2,000 a month on contract terms, adding a contractual SLA, SAML single sign-on, dedicated support, and white labelling.
- **Free plan with one team member**: 100 free validations forever including enhanced catch-all resolution, no credit card, which is a genuine evaluation path rather than a lead capture.

## Use cases

- **Cold outbound team with a third of the list on accept-all domains**: The incumbent verifier returns 30,000 unknowns on a 90,000-row B2B list, and the choice is between deleting real pipeline and mailing blind into a sending reputation. Outcome: Standard validation clears the easy majority at one credit each and Enhanced Validation resolves the accept-all segment at three, so the total bill lands well under $200 and the mailable list grows by tens of thousands of addresses.
- **SaaS platform validating customer-uploaded lists**: Customers import contact lists of wildly varying quality, and every bad address they upload eventually damages the platform's own sending reputation. Outcome: The API validates on import in real time, the unlimited plan removes any need to meter or bill customers per check, and the SDKs and MCP server let the validation call sit anywhere in the stack.
- **Agency verifying millions of addresses a month**: Metered pricing at scale has become the second largest line item in the delivery budget and it is impossible to quote a client without guessing at list quality first. Outcome: The $799 twelve-month unlimited plan converts a variable six-figure annual meter into a fixed cost, with the 10,000 monthly enhanced resolutions covering the hardest addresses and overflow available on credits.
- **Lifecycle marketer on Klaviyo who forgets to clean**: List hygiene happens when someone notices a bounce spike, which is always after the damage rather than before it. Outcome: Recurring Validation re-checks the list on a schedule and the Klaviyo and HubSpot connectors sync the result back, so decayed addresses fall out continuously and the health report shows whether the source of new signups is the real problem.

## Pricing

Two paths on the same platform: non-expiring pay-as-you-go credits with automatic volume discounts, or flat-rate unlimited monthly plans on a three, six, or twelve month commitment. Standard validation is one credit, enhanced catch-all resolution is three.

- **Free**: $0 forever, 100 validations. Standard plus enhanced catch-all resolution; Syntax, DNS, and SMTP checks; One team member; No credit card required. Including the enhanced path in the free allowance is the right call, because the enhanced path is the only reason to choose Truelist.
- **Pay-as-you-go credits**: $1.40 to $0.70 per 1,000 credits, by cumulative volume. Up to 10,000 credits at $1.40 per thousand; Up to 50,000 at $1.10 per thousand; Up to 250,000 at $0.90 per thousand; Up to 1,000,000 at $0.70 per thousand; Credits never expire and discounts apply automatically. Standard validation is 1 credit, enhanced catch-all resolution is 3, so budget by expected accept-all share rather than by row count.
- **Unlimited**: $799 to $999 per month, billed upfront by commitment length. $999 per month on 3 months, $2,997 total; $899 per month on 6 months, $5,394 total; $799 per month on 12 months, $9,588 total; Unlimited standard validations; 10,000 enhanced catch-all resolutions per month; Deliverability monitoring, API access, unlimited team members. The break-even against credits is roughly 1.1 million standard validations a month at the best credit rate, so this is a high-volume instrument.
- **Enterprise**: From $2,000 per month, contract terms. Contractual SLA; SOC 2 Type II reporting; SAML single sign-on; Dedicated support; White labelling. The only tier that requires a sales conversation; everything below it is fully self-serve.

Billing notes:

- At the three reference volumes, pure standard validation costs about $14 at 10,000 addresses, about $90 at 100,000, and about $700 at 1,000,000, which puts Truelist among the cheapest published rates in the category and well under a fifth of Kickbox at every point.
- Those figures assume no accept-all traffic. On a list that is 30 percent accept-all, the blended cost is roughly 1.6 credits per address, so 100,000 addresses cost closer to $145 rather than $90. That is still cheaper than most competitors before they resolve a single catch-all.
- Credits never expire and volume discounts are applied automatically against cumulative usage, so there is no need to buy a large block up front to reach a better rate.
- The unlimited plans are billed upfront for the whole commitment, so $9,588 leaves your account on day one for the twelve-month rate. That is real working capital, not a monthly subscription.
- The enhanced resolution allowance on unlimited plans is capped at 10,000 per month, which is the number to check against your actual accept-all volume before assuming unlimited means unlimited.
- Enterprise pricing starts at $2,000 a month on contract, and is the only place SLA, SSO, and white labelling appear.

Value assessment: Truelist is priced like a budget verifier and engineered like a specialist, which is an unusual and favourable combination. At roughly $90 per 100,000 standard validations it undercuts EmailListVerify, sits near MyEmailVerifier, and costs a fifth of Kickbox, and unlike any of them it will actually try to resolve your accept-all addresses rather than shrugging. The three-credit surcharge is the honest way to price that: you pay for the hard work only when the hard work happens. The unlimited plans are the sharper instrument, converting a metered bill into a fixed cost for anyone above roughly a million validations a month, though the upfront billing and the 10,000-per-month enhanced cap both deserve scrutiny before signing. The real risk being priced here is not capability, it is vendor age: this is a company that launched in late 2024 offering flat-rate unlimited plans with a SOC 2 report, and the sensible move is to start on credits and graduate to unlimited only once you have watched the results for a quarter.

## Strengths

- Enhanced Validation genuinely attempts catch-all resolution rather than labelling and abandoning it, and it is charged only when it triggers.
- One of the cheapest published credit ladders in the category, at $0.70 to $1.40 per thousand with credits that never expire.
- The flat unlimited plan is a rare and genuinely useful pricing shape for high-volume agencies and platforms, converting a variable meter into a fixed cost.
- SOC 2 Type II, ISO 27001, TLS 1.2 or higher, and GDPR compliance published on the front page, which is an unusually strong posture for a company this young and this small.
- A complete technical surface for the price: REST API, SDKs, an MCP server, a Chrome extension, real-time form validation, and Recurring Validation on a schedule.
- Founders with directly relevant credentials, including a former head of engineering at ConvertKit, which is a company whose business model depends on list quality.
- The free plan includes the enhanced catch-all path, so the differentiator is testable at zero cost before any commitment.

## Limitations

- Very young company. Truelist launched publicly in late 2024 and is founder-scale, which matters more than usual when the headline offer is a prepaid twelve-month unlimited plan.
- Unlimited is not unlimited for the thing you care about: enhanced catch-all resolutions are capped at 10,000 a month on those plans.
- Unlimited plans bill the entire commitment upfront, so the cheapest rate requires $9,588 in cash on day one.
- Enhanced Validation accuracy is a vendor claim of up to twice the competition, with no published methodology, third-party audit, or breakdown of what the browser-based and third-party data layers actually check.
- Upload limit of 10MB per file is modest against competitors that accept 100MB, so very large lists must be split or pushed through the API.
- No warmup, no inbox placement seed testing, and no DMARC reporting; deliverability monitoring on unlimited plans is the extent of the surrounding toolkit.
- The named integration list is short, covering Mailchimp, Klaviyo, HubSpot, Zapier, and Make, so most ESP connections happen through an automation layer rather than natively.

## Comparisons

- **Truelist vs Kickbox**: Kickbox costs $500 for 100,000 addresses where Truelist costs about $90, and it will not resolve a single catch-all, refunding the credit instead. What Kickbox buys you is a Ziff Davis parent, roughly thirty native ESP connectors, and a decade of operating history. Truelist matches its certification claims on paper and beats it comprehensively on capability and price. Choose Kickbox when procurement wants a large counterparty; choose Truelist on the merits of the product.
- **Truelist vs Scrubby**: Both exist to resolve the risky bucket, and they take opposite routes. Scrubby's Deep Verification sends real messages and watches server behaviour over 72 hours, which is slower, more intrusive, and arguably more definitive, at roughly $0.005 per credit and three credits per deep check. Truelist infers from SMTP, browser, and third-party signals in minutes at a seventh of the price. Pick Scrubby when a wrong answer is catastrophic and you can wait three days; pick Truelist when you want most of the recovery at a fraction of the cost and latency.
- **Truelist vs Verifalia**: Verifalia's answer to hard addresses is retries: High and Extreme quality levels spend two or four credits running additional passes over up to two minutes to clear temporary failures. Truelist spends three credits on a fundamentally different technique aimed specifically at accept-all domains. Verifalia has twenty years of operating history, a Europe-based entity, and configurable data retention from five minutes to thirty days. Truelist is cheaper, younger, and better at the specific catch-all problem.
- **Truelist vs mailfloss**: Mailfloss is automation-first: it lives inside your ESP, fixes typos, blocks bad signups in real time, and re-verifies decayed subscribers on a schedule, from $29 a month. Truelist has Recurring Validation but is fundamentally a validation engine you point at a list or call from code. For a newsletter or ecommerce list that should clean itself with no thought, Mailfloss is the better shape. For B2B lists where catch-all resolution decides how many contacts survive, Truelist is the right tool.
- **Truelist vs BounceBan**: BounceBan is the closest philosophical match, claiming to resolve 85 to 95 percent of catch-all, greylisted, and gateway-protected addresses, with unlimited free single checks and credits from $0.005 down to $0.0013. Truelist is cheaper per standard credit, publishes SOC 2 Type II and ISO 27001 where BounceBan publishes nothing about itself at all, and offers a flat unlimited plan. BounceBan makes the more aggressive catch-all claim; Truelist is the more accountable company. Test both on the same sample of known-good and known-dead accept-all addresses.

## Implementation

- Setup time: The vendor claims under two minutes to get started and that is roughly right for a bulk upload. API integration takes an afternoon with the published SDKs, and connecting Zapier or Make to an ESP is a short configuration job rather than an engineering project.
- Learning curve: Low, with one concept to internalise: the difference between a standard credit and a three-credit enhanced resolution, and therefore why two lists of identical length can cost very different amounts. Everything else is the category-standard result vocabulary.
- Onboarding: Fully self-serve on Free, credits, and the unlimited plans. Only Enterprise requires a conversation. There is no demo gate and no minimum contract below the unlimited tier.
- Migration: Nothing to migrate technically, since verification is stateless and credits do not transfer between vendors. The meaningful preparation is expectation setting: if you are coming from a verifier that marked accept-all addresses risky, Truelist will resolve a chunk of that bucket into valid and your mailable list will grow, so send a controlled segment of the newly recovered addresses first and measure the actual bounce rate before trusting the rest. If you are considering an unlimited plan, run a month on credits first and use the real usage number to decide.

## Platform, API & security

- Platforms: Web application, REST API, SDKs and client libraries, MCP server, Chrome extension, Zapier, Make
- API: Documented developer API for single and bulk validation with published SDKs, a status page, and an MCP server for agent-driven workflows. Bulk uploads accept CSV, XLS, and XLSX up to 10MB. Truelist does not publish per-second rate limits or a latency figure on its public pages; enhanced catch-all resolution takes materially longer than a standard check by design.
- Compliance: SOC 2 Type II, ISO 27001 compliant (vendor stated), GDPR compliant, TLS 1.2 or higher in transit
- Data residency: Not published as a customer-selectable option.
- SSO: SAML single sign-on on the Enterprise tier only.
- Security notes: Truelist publishes its certification set on the front page and frames auditability as a product principle. Verification is performed without delivering a message to the address, including on the enhanced path, which is the distinction from Scrubby's deep verification method. Retention windows and deletion policy are not published as specific numbers the way Verifalia publishes its five-minute to thirty-day setting.

## Support

- Channels: Email and contact form, Help centre, Dedicated support on Enterprise
- Documentation: Public docs covering the API, SDKs, the MCP server, integrations, and use cases, plus a help centre, a changelog, and a status page.
- Community: No user forum. There is a partners page and the founders maintain a public presence on GitHub and social platforms.

## Company

- Founded: 2024
- Founders: Grant Ammons, Corey Haines
- Headquarters: United States (distributed)
- Ownership: Privately held and independently operated
- Employees: Not disclosed; founder-scale
- Funding: No funding rounds disclosed.

Timeline:

- 2024: Truelist launches publicly, founded by Grant Ammons, previously head of engineering at ConvertKit, and startup marketer Corey Haines, with catch-all resolution as the founding premise.
- 2025: Adds the developer API, SDKs, advanced reporting with list health and failure-reason breakdowns, and connectors for Mailchimp, Klaviyo, HubSpot, Zapier, and Make.
- 2025: Publishes SOC 2 Type II and ISO 27001 compliance alongside GDPR and TLS 1.2 encryption, and introduces the flat-rate unlimited plans and an Enterprise tier with SLA, SSO, and white labelling.
- 2026: Ships an MCP server, a Chrome extension, Recurring Validation on a schedule, and deliverability monitoring, and adds a deliverability-first cold outbound infrastructure product alongside verification.

## Integrations

Mailchimp, Klaviyo, HubSpot, Zapier, Make, Clay, REST API with published SDKs, MCP server for AI assistants, Chrome extension, Real-time form validation for signup and import flows

## FAQ

### What is Truelist?

Truelist is an email validation platform that checks whether addresses are safe to send to, and that specifically tries to resolve catch-all domains other verifiers return as unknown. It uses a standard pass costing one credit and an Enhanced Validation pass costing three credits that combines SMTP checks, automated browser verification, and third-party data. It sells non-expiring credits and flat-rate unlimited monthly plans, and ships an API, SDKs, an MCP server, and a Chrome extension.

### How much does Truelist cost?

Pay-as-you-go credits run $1.40 per thousand up to 10,000, $1.10 up to 50,000, $0.90 up to 250,000, and $0.70 up to a million, with discounts applied automatically and credits that never expire. On pure standard validation that is about $14 for 10,000 addresses, about $90 for 100,000, and about $700 for a million. Unlimited plans are $999 a month on three months, $899 on six, and $799 on twelve, billed upfront. Enterprise starts at $2,000 a month.

### How does Truelist handle catch-all and accept-all addresses?

This is the product's whole reason for existing. When a domain answers accept-all and the standard check returns unknown, Enhanced Validation runs automatically, layering SMTP behaviour, automated browser checks, and third-party data cross-referencing to decide whether the specific mailbox exists. The vendor claims up to twice the accuracy of standard providers on these cases. It costs three credits instead of one, and it only runs when the standard pass has already failed.

### Does Truelist charge extra for catch-all resolution?

Yes, three credits instead of one, and that is the honest design. Because the enhanced pass only triggers on addresses the standard pass could not resolve, a clean consumer list never pays the surcharge and a B2B list pays it exactly on the addresses where it recovers value. On a list that is 30 percent accept-all the blended cost is roughly 1.6 credits per address, which still lands well under most competitors' flat rate.

### Do Truelist credits expire?

No. Pay-as-you-go credits never expire and volume discounts apply automatically as cumulative usage crosses each tier, so there is no incentive to over-buy in a single transaction to reach a better rate. The unlimited plans work differently: they are a commitment billed upfront for the full term, and the included 10,000 monthly enhanced resolutions do not roll over.

### What does the unlimited plan actually include?

Unlimited standard validations, 10,000 enhanced catch-all resolutions per month, deliverability monitoring, API access, and unlimited team members, for $799 to $999 a month depending on commitment length, billed upfront for the whole term. The enhanced cap is the number that matters: if your accept-all volume exceeds 10,000 a month, unlimited is not unlimited for the capability you are buying Truelist for.

### Is Truelist secure and GDPR compliant?

Truelist publishes SOC 2 Type II, ISO 27001 compliance, TLS 1.2 or higher encryption, and GDPR compliance on its front page, and offers SAML single sign-on and a contractual SLA on the Enterprise tier. That is a stronger published posture than most independent verifiers and considerably stronger than anonymous vendors such as BounceBan. Truelist does not publish a customer-selectable data residency option or a specific retention window.

### Can Truelist clean my list automatically on a schedule?

Yes. Recurring Validation re-checks a list on a schedule so decayed addresses are removed continuously rather than in an annual project, and real-time form validation catches bad addresses at the point of capture. Results sync back through the Mailchimp, Klaviyo, HubSpot, Zapier, and Make connectors. It is less turnkey than Mailfloss, which is built entirely around ESP-side autopilot, but it covers the same ground for teams that already have an automation layer.

### Who is behind Truelist?

It was founded by Grant Ammons, a software developer with more than fifteen years in email who was previously head of engineering at ConvertKit, and Corey Haines, a startup marketer with around nine years of growth experience. It is a small, independent, privately held company with no disclosed funding, which launched publicly in late 2024. That youth is the single largest thing to weigh against the product's merits.

### Who should not use Truelist?

Anyone whose list is mostly Gmail, Yahoo, and Outlook.com addresses, because the enhanced catch-all path will almost never fire and you are paying for a differentiator you cannot use. Also buyers who need long vendor history before signing, teams that want a full deliverability suite with warmup and inbox placement testing, and anyone unwilling to put $9,588 down upfront for the cheapest unlimited rate.

## Editorial verdict

Truelist is the most interesting price-to-capability point in this category right now. It costs less per standard validation than almost every competitor, it actually attempts the catch-all resolution that Kickbox, NeverBounce, and most of the established field decline to touch, it charges for that work only when it happens, and it wraps the whole thing in SOC 2 Type II, ISO 27001, an API, SDKs, an MCP server, and scheduled re-validation. Two things should temper enthusiasm. The company launched in late 2024 and is founder-scale, and the flat-rate unlimited offer, prepaid for up to twelve months, is exactly the shape of commitment that goes wrong if a small vendor stumbles. The right approach is obvious and cheap: take the 100 free validations, run your known-good and known-dead accept-all addresses through them, then buy credits rather than a commitment, and only consider the unlimited plan after a quarter of real usage data. Done that way, Truelist is the first thing most B2B teams should try.

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Source: SaaSTracker (https://saastracker.org), an independent editorial project. This profile is compiled from public information, carries no peer reviews or paid placement, and was last reviewed 2026-08-22. Awards are judged on published criteria: https://saastracker.org/methodology