PostGrid

Name: PostGrid
Brand: PostGrid
Price: 0460.902 USD

A print and mail API with a CASS certified address engine bolted to the front of it

PostGrid is a programmatic direct mail platform that sends letters, postcards, self-mailers, cheques, and statements through a REST API or a no-code dashboard, with a separately sold USPS CASS certified address verification and NCOA product in front of it; per-piece prices include printing and postage, starting at $0.902 for a 4x6 First Class postcard and $0.827 for a black and white Standard Class letter, on a free Starter plan that allows up to 500 mailings a month.

Visit website

Overview

PostGrid is one of a small handful of vendors that treat physical mail as a developer primitive rather than a print job. You describe a mail piece as an HTML template with merge fields, post a recipient record to an endpoint, and a letter or postcard shows up in a mailbox a few days later with tracking events flowing back. That much it shares with the rest of the programmatic direct mail category. What separates PostGrid is that address quality is a first-class product rather than an afterthought: the company sells a CASS certified verification and NCOA API covering more than 250 countries and territories, and the mail product sits on top of it.

That ordering matters more than it sounds. In direct mail the single largest source of waste is not print cost, it is pieces that never arrive because the address was stale, misformatted, or a delivery point that does not exist. A postcard sent to a bad address still costs you the print and the postage and returns nothing. PostGrid runs verification, delivery point validation, residential versus commercial flagging, and National Change of Address lookups against your list before anything goes to press, which is the difference between a 3 percent waste rate and a 12 percent one on a list that has been sitting in a CRM for two years.

Commercially the platform is unusually approachable at the bottom and unusually opaque at the top. The Starter plan is free, gives you one user, ten templates, a single delivery network, and up to 500 mailings a month, which is enough to run a real transactional mail programme for a small business without paying a subscription at all. Above that there is only Enterprise, quoted, with unlimited users, multiple delivery networks, and a named account manager. There is no published middle tier, so a company sending 2,000 pieces a month is in a conversation rather than on a rate card.

The compliance posture is the other reason PostGrid keeps showing up in regulated shortlists. The company publishes HIPAA, PHIPA, PIPEDA, GDPR, and SOC 2 coverage, hosts on AWS with end to end encryption, and operates across the United States, Canada, the United Kingdom, and Australia. Healthcare, insurance, and financial services buyers who need to mail explanation of benefits statements or regulated notices tend to end up here or at one of two competitors, and PostGrid is the one that will also sell you the address hygiene layer as a standalone API.

Best for

Developer-led teams in healthcare, insurance, fintech, and B2B SaaS that need compliant transactional mail triggered by application events, and any small business whose real problem is a dirty address list rather than a print vendor.

Not the right fit for

Anyone shopping for corporate gifting. There is no catalog, no gift card, no recipient choice, and no way to send anything that is not printed matter or a cheque.
Buyers who want mail that reads as personal or handwritten. PostGrid output is competent commercial print, and nobody will mistake it for a note from a human being.
Non-technical marketers with no engineering support and no appetite for HTML. The dashboard exists, but the design and the documentation are both written for developers, and a marketer will find Postalytics far friendlier.
Companies that need a published price above 500 pieces a month. Once you outgrow the free Starter plan there is no self-serve middle tier at all, only an Enterprise quote, which is a genuine procurement friction the rate-card competitors do not have.
Teams whose primary volume is international mail. Address verification spans 250-plus countries, but international postage is a contact-sales conversation rather than a published rate.

How it works

1
You create a template, either in PostGrid's HTML editor or by posting your own HTML with handlebars-style merge variables. Because the template is markup, it lives in your repository alongside your email templates rather than in a designer's file, and personalization is a data problem instead of a design one.
2
Before anything prints, addresses go through the verification layer. PostGrid parses freeform input, standardizes it to USPS, Canada Post, Royal Mail, or Australia Post conventions, runs delivery point validation, flags residential versus commercial, and can apply an NCOA lookup to catch recipients who have moved. Bad records are rejected rather than printed.
3
Your application calls the print and mail API with a recipient and a template ID, or a marketer builds the same send in the dashboard from a CSV or a CRM segment. Test and live environments are separate, so you can exercise the whole flow in CI without producing paper.
4
PostGrid routes the job to its print network, prints, addresses, and inducts it into the mail stream at the class you selected. First Class costs more and moves faster; Standard Class is the cheap marketing tier. Postage is inside the per-piece price rather than billed separately.
5
Tracking comes back three ways: carrier scan events on the piece itself, a personalized URL if you put one on the artwork, and a personalized QR code. Those three signals are what let you attribute a pipeline event to a specific mailing rather than reporting a campaign-level guess.

Feature breakdown

27 features in 5 modules

Print and mail formats

What PostGrid can physically put in a mailbox, and roughly what each costs with postage included.

Postcards: 4x6 at $0.902 and 6x9 at $1.023 on First Class, printing and postage included. The 4x6 is the cheapest way to touch a mailbox on the platform.
Letters in envelopes: Black and white Standard Class at $0.827, colour Standard at $0.987, black and white First Class at $1.059, and colour First Class at $1.219. The Standard versus First Class gap is roughly 23 cents a piece and buys you a few days of transit.
Cheques: Printed and mailed cheques at $1.18, which is why insurance claims and fintech disbursement teams end up on this platform rather than at a marketing-first vendor.
Self-mailers: Bi-fold pieces that need no envelope, sitting between a postcard and a letter for both cost and how much you can say.
Bills and statements: Multi-page recurring documents with variable content per recipient, generated from data rather than from a designed file, which is the transactional workload the platform is genuinely built for.
Mail class selection: You choose First Class or Standard per send. Standard is the marketing rate and is meaningfully cheaper; First Class is what you use when a notice has a legal or contractual clock attached.

Address verification and NCOA

The layer PostGrid sells separately and the reason most technical buyers pick it.

CASS certified US verification: USPS certified standardization and correction, which is what qualifies a piece for presorted postage rates as well as what stops it being returned.
NCOA lookups: Checks the USPS National Change of Address database so recipients who moved are updated rather than mailed into the void. On a two-year-old CRM list this is the single highest-return step in the whole workflow.
Delivery point validation and RDI: Confirms the specific delivery point exists and flags whether it is residential or commercial, which matters for both postage class eligibility and for anything you would rather not send to a home address.
International verification across 250-plus countries: Standardizes to local postal conventions rather than only handling US formats, which is unusual in this category and useful even if you print domestically.
Bulk verification up to 200,000 addresses: Upload a list and get it scrubbed in one batch rather than looping the API record by record.
Address autocomplete at point of entry: A front-end component that prevents bad addresses being captured in the first place, which is cheaper than fixing them later.
Geocoding with accuracy scores: Returns latitude and longitude with a confidence score, useful for territory assignment and radius targeting off the same data.

Developer surface

A REST API with the environment separation and tooling you would expect from an infrastructure vendor.

REST API with language SDKs: Fully documented endpoints for every format, with SDKs across common languages, so a send is an HTTP call rather than a file handoff.
Separate test and live environments: Test keys produce previewable pieces without printing anything, which means the mail path can be exercised in CI instead of only in production.
HTML templates with merge variables: Artwork is markup with variable substitution, so templates version-control cleanly and personalization scales to every field in your database.
Webhooks and activity logs: Status changes push to your endpoint, and a searchable activity log plus database search covers the cases where you need to prove what was sent to whom.
Idempotent send handling: Test and live separation plus per-order records make it practical to build retry logic without accidentally mailing the same person twice, which is the failure mode that costs real money.

Tracking and attribution

Three independent signals, which is more than most vendors in this category offer.

Carrier tracking events: Real-time order status from the carrier per piece, so you can answer whether a specific notice actually reached a specific customer.
Personalized QR codes: A unique code per mailpiece that ties a scan back to the individual recipient record rather than to a campaign.
Personalized URLs: pURLs give the same per-recipient resolution for people who type rather than scan, and both feed the same reporting.
Analytics dashboard: Campaign-level delivery and response reporting on top of the per-piece events, for the people who do not want to query the API.

Compliance and integrations

The regulated-industry story, plus the connectors that let a marketer trigger a send without engineering.

HIPAA and healthcare handling: Published HIPAA coverage alongside PHIPA for Canadian health data, which is what allows patient communications and explanation of benefits mail to run through the platform.
SOC 2, GDPR, and PIPEDA: The rest of the compliance set, with AWS hosting and end to end encryption of sensitive fields.
CRM and marketing automation connectors: Salesforce, HubSpot, Marketo, ActiveCampaign, and Klaviyo native integrations mean a CRM workflow can fire a physical send without a developer writing the trigger.
Zapier: Covers the long tail of automation tools, which is how most small businesses will actually connect PostGrid to whatever they run on.
Stripe and QuickBooks: Billing and accounting connectors that make dunning letters and printed invoices a configuration rather than a project.

Use cases

4 documented

Fintech operations lead mailing regulated notices

Account closure notices and annual disclosures have to be mailed on a legal clock, with evidence that each one went out, and the current process is a spreadsheet emailed to a print bureau.

The notice becomes an HTML template triggered by an application event, addresses are CASS verified and NCOA updated before print, and carrier tracking events per piece give the compliance team the audit trail they were previously reconstructing by hand.

B2B SaaS marketer running an account-based campaign

Two hundred target accounts need a physical touch timed to a nurture sequence, and the marketing team has no print relationship and no interest in acquiring one.

A HubSpot workflow triggers a 6x9 postcard through the native connector at roughly a dollar a piece all in, each carrying a personalized QR code so scans attribute back to the specific account rather than the campaign.

Healthcare practice sending patient communications

Appointment and benefits letters contain protected health information, so a generic marketing mail vendor is not an option and the practice cannot absorb a bad-address return rate.

HIPAA and PHIPA coverage make the platform usable for the content, NCOA scrubbing cuts returned mail, and the free Starter plan covers a practice sending under 500 pieces a month at no subscription cost.

Ecommerce founder with a stale customer list

Forty thousand addresses collected over four years, an unknown fraction of them dead, and a win-back postcard idea that dies the moment someone models the waste.

Bulk verification scrubs the whole list in one batch and NCOA updates the movers, so the send goes to a list the founder can defend, and the 4x6 postcard rate of $0.902 makes the economics legible before a single piece prints.

Pricing

from $0 per month with 4x6 postcards at $0.902 each

Free platform plan plus per-piece pricing with printing and postage included. Address verification is a separately priced product. Above 500 mailings a month there is no published tier, only a quoted Enterprise plan.

Plan	Price	Includes
Starter	$0 per month	Up to 500 mailings per month 1 user and 10 templates Single delivery network Full REST API with test and live environments 4x6 postcard $0.902, black and white Standard letter $0.827, cheque $1.18 Self-serve via a Get API Keys button. For a small business under 500 pieces a month this is the entire product at no subscription cost.
Enterprise	Custom quoted	Unlimited users and templates Multiple delivery networks Volume per-piece rates Dedicated support and named account manager HIPAA and regulated workload handling The only tier above Starter. There is no published middle plan, which is the platform's main commercial weakness for a growing business.

Plan

Price

Includes

Starter

per month

Up to 500 mailings per month
1 user and 10 templates
Single delivery network
Full REST API with test and live environments
4x6 postcard $0.902, black and white Standard letter $0.827, cheque $1.18

Self-serve via a Get API Keys button. For a small business under 500 pieces a month this is the entire product at no subscription cost.

Enterprise

Custom

quoted

Unlimited users and templates
Multiple delivery networks
Volume per-piece rates
Dedicated support and named account manager
HIPAA and regulated workload handling

The only tier above Starter. There is no published middle plan, which is the platform's main commercial weakness for a growing business.

Add-ons

Address verification API (Separately priced product): Sold on its own pricing page as a standalone API, including bulk verification, NCOA, autocomplete, and international coverage. You can buy it without buying the mail product.
Overage above the Starter allowance (Charged per piece): Exceeding 500 mailings in a month incurs overage fees rather than a hard stop, so a spike does not break your mail flow.
International postage (Contact sales): PostGrid states it can provide local rates for international postage, but none are published, so international volume cannot be modelled from the website.

Billing notes

Per-piece prices quoted on the US rate card include printing and postage, so the number on the page is close to the number you actually pay for a domestic send.
The First Class versus Standard Class choice is the biggest lever on unit cost: a black and white letter is $0.827 Standard and $1.059 First Class, a 27 percent difference for the same physical object.
Address verification is metered separately from mail. Budget for it, because skipping it is how a cheap campaign becomes an expensive one through returns.
There is no published pricing between the free plan and Enterprise, so any business scaling past 500 pieces a month should get a quote before committing engineering time.
Overage fees apply above the Starter allowance rather than a hard cap, which is friendlier operationally but means a viral month can produce an unmodelled bill.

Value assessment: For a small business the free Starter plan is close to unbeatable: a production-grade mail API with test environments, HIPAA coverage, and CASS verification for no subscription, at $0.902 a postcard with postage in the price. Against a local print shop the comparison is not really about unit cost, which will be similar at a few hundred pieces, it is that the print shop cannot be triggered by a webhook and will not tell you whether piece 143 was delivered. The value falls apart at the transition point. A business sending 3,000 pieces a month has outgrown the free tier and has no published rate to grow into, which is where competitors with real middle tiers win on procurement friction alone.

Strengths & limitations

Strengths

Address verification is a real product rather than a checkbox: CASS certified, NCOA, delivery point validation, residential flagging, geocoding, and 250-plus country coverage, which directly attacks the largest source of waste in direct mail.
The free Starter plan is a usable production plan with the full API, not a crippled demo, and 500 mailings a month covers a genuine small-business transactional programme.
Compliance breadth is unusual for a self-serve product: HIPAA, PHIPA, PIPEDA, GDPR, and SOC 2 make it viable for healthcare and financial notices that most marketing-first mail vendors cannot touch.
Three independent attribution signals, carrier tracking plus personalized QR codes plus pURLs, which is more resolution than most competitors offer.
Cheques as a first-class format, which quietly makes PostGrid a disbursement tool as well as a marketing one.
Native connectors to Salesforce, HubSpot, Marketo, Klaviyo, ActiveCampaign, Stripe, and QuickBooks, so a marketer can trigger physical mail without opening an editor.
Separate test and live environments make the mail path testable in CI, which sounds minor until you have accidentally printed a thousand pieces of staging data.

Limitations

The pricing ladder has a hole in it. Free up to 500 pieces a month, then nothing published until Enterprise, so the exact moment your programme starts working is the moment you enter a sales cycle.
International postage is not published at all, which makes any cross-border programme unmodellable from the outside despite the excellent international address coverage.
The product is written for developers. The dashboard exists but the documentation, the template model, and the error surface all assume someone comfortable with HTML and HTTP.
No gifting capability whatsoever, which matters because buyers arrive at this category wanting one vendor for both jobs and PostGrid does exactly half of it.
Company disclosure is thin. Funding is not publicly confirmed, headcount is not published, and HQ is variously listed as Boston and Toronto, which is a fair question to ask before routing regulated mail through a vendor.
Free tier limits of one user and ten templates bite quickly for any team with more than one person managing sends.

Head-to-head comparisons

6 alternatives

PostGrid vs Lob

from $0 per month with postcards at $0.905 each

Lob is the incumbent in programmatic direct mail with 8,500-plus customers, roughly $80 million raised, and a published ladder from free through $260 and $550 monthly plans that takes a postcard down to $0.615. PostGrid is cheaper to start, has the stronger address verification product, and covers HIPAA and Canadian health data, but has no published tier between free and Enterprise. Pick Lob if you want to model unit costs at 75,000 pieces a year from a public rate card; pick PostGrid if address hygiene, Canadian coverage, or healthcare compliance is the deciding factor.

Full PostGrid vs Lob comparison

PostGrid vs Postalytics

from $0 per month with 6x9 Standard Class postcards at $1.048 each

Postalytics is the same job aimed at a marketer instead of a developer: a drag-and-drop editor, triggered drip campaigns, and deep HubSpot and Salesforce integration on a free plan at $1.048 a 6x9 postcard. PostGrid is cheaper per piece, better on address data, and better on compliance, but assumes someone will write code. A marketing team with no engineering support should take Postalytics; an engineering-led team should take PostGrid.

Full PostGrid vs Postalytics comparison

PostGrid vs Poplar

from $0 per month with 4x6 postcards at 73 cents each

Poplar undercuts PostGrid on the marketing postcard, at $0.73 on its free tier and $0.55 on Pro, and is built around programmatic retargeting triggers. PostGrid wins on regulated formats, cheques, statements, and the verification layer. Choose Poplar for high-volume consumer marketing mail where unit cost dominates; choose PostGrid when the mail is transactional, compliance-bound, or only as good as the address list behind it.

Full PostGrid vs Poplar comparison

PostGrid vs Stannp

from $0 per month, with a colour letter at $0.99 including postage

Stannp publishes a full self-serve ladder from $0 to $315 a month with per-volume rate tables and prints in the US, UK, and Canada, which is exactly what PostGrid does not do. PostGrid has the better API, the better address product, and the compliance coverage. A UK or cross-border sender who wants a visible price should start at Stannp; a US technical team building against an endpoint should start at PostGrid.

Full PostGrid vs Stannp comparison

PostGrid vs LetterStream

from $0 per month, with Express postcards from $0.91 and First-Class letters from $1.27

LetterStream is the specialist for legally significant mail, with Certified Mail from $8.63 and FedEx options, no monthly fee, and no minimum. PostGrid is broader, more programmable, and cheaper on ordinary letters at $0.827 Standard. Send your demand letters and certified notices through LetterStream; run your transactional and marketing volume through PostGrid.

Full PostGrid vs LetterStream comparison

PostGrid vs Docmail

from No account fee, with an A4 black and white letter at £1.01 including postage

Docmail is the UK hybrid mail equivalent, at £1.01 for a black and white A4 letter with economy postage and a one-item minimum, run by a long-established Somerset printer. PostGrid is the US-centric API with far better developer tooling. UK small businesses posting occasional letters should use Docmail; anyone building mail into software should use PostGrid.

Full PostGrid vs Docmail comparison

Implementation & onboarding

Setup time: An afternoon for a developer to get a test postcard rendering and a live one in the mail. Longer if you are also cleaning a list, because bulk verification and NCOA on a large file is the step that actually takes days.
Learning curve: Moderate and front-loaded. The API itself is conventional REST and reads quickly. The genuinely unfamiliar parts are postal ones: mail class selection, presort eligibility, what CASS certification does and does not guarantee, and why a technically valid address can still be undeliverable.
Onboarding: Fully self-serve on the Starter plan through a Get API Keys flow with no sales contact. Enterprise adds a named account manager and dedicated support, which is also where any non-trivial volume pricing conversation happens.
Migration notes: Moving from a print bureau means recreating artwork as HTML with merge variables, which is the real work and is best done one format at a time. Moving from a competing mail API is mostly a field-mapping exercise. Bring your address list through bulk verification before you cut over, since the returns you were absorbing at the old vendor are the thing PostGrid is meant to fix.

Platform, API & security

Platforms: Web dashboardREST APILanguage SDKsBulk CSV uploadWebhooks
API: Fully documented REST API for letters, postcards, self-mailers, cheques, and statements, plus a separate address verification API with autocomplete, bulk verification up to 200,000 records, NCOA, DPV, RDI, and geocoding. Separate test and live environments.
Compliance: SOC 2HIPAAPHIPAPIPEDAGDPRUSPS CASS certified
Data residency: Hosted on Amazon Web Services with operations across the United States, Canada, the United Kingdom, and Australia; specific regional residency commitments are handled through Enterprise agreements rather than published.
SSO: Not published on the self-serve Starter plan; handled through Enterprise agreements.
Security notes: End to end encryption for sensitive fields, AWS hosting, and separate test and live key scopes. HIPAA and PHIPA coverage is what allows protected health information to appear on printed pieces, which is the specific reason regulated buyers shortlist this vendor.

Support & resources

Channels: Email supportDedicated support and named account manager on EnterpriseSales contact for volume and international rates
Documentation: Full API documentation covering print and mail endpoints, address verification, webhooks, and the language SDKs, with worked examples per format.
Community: No large public user forum; support runs through the vendor rather than a community.

Company

Founded: 2020
Headquarters: Boston, Massachusetts, with Canadian origins in Toronto and operations across the USA, Canada, the UK, and Australia
Ownership: Privately held
Employees: Not disclosed
Funding: Funding is not publicly confirmed. Company databases disagree, with some recording a single undisclosed round and others recording no known external funding.

Timeline

2020PostGrid launches as an API-first offline communication platform, pairing programmatic print and mail with address verification.
2021Company records show incorporation and the first commercial traction, positioned against Lob in the US direct mail API market.
2023Compliance coverage broadens to HIPAA, PHIPA, PIPEDA, GDPR, and SOC 2, opening healthcare and financial services workloads.
2024Address verification expands to more than 250 countries and territories with autocomplete, geocoding, DPV, and RDI data.
2026Serving more than 1,000 customers across healthcare, finance, retail, nonprofit, and education, with operations in four countries and a free Starter plan covering 500 mailings a month.

Integrations

Salesforce
HubSpot
Marketo
Klaviyo
ActiveCampaign
Stripe
QuickBooks
Zapier
REST API and language SDKs
Webhooks

Frequently asked questions

11 questions

What is PostGrid?

PostGrid is a programmatic direct mail platform. You send letters, postcards, self-mailers, cheques, and statements through a REST API or a web dashboard, and PostGrid prints, addresses, and mails them with printing and postage included in the per-piece price. It also sells a separate USPS CASS certified address verification and NCOA API that covers more than 250 countries.

How much does PostGrid cost?

The Starter plan is free and allows up to 500 mailings a month with one user and ten templates. Per piece in the US, a 4x6 First Class postcard is $0.902, a 6x9 is $1.023, a black and white Standard Class letter is $0.827, a colour First Class letter is $1.219, and a cheque is $1.18, all with printing and postage included. Above the Starter allowance the only published option is a quoted Enterprise plan.

What does one postcard actually cost, all in?

For a 4x6 First Class postcard on the free Starter plan, $0.902 covers printing, addressing, and postage, and the platform fee is zero. Add address verification, which is metered separately, and realistically budget a cent or two per record. So a 500-piece send is roughly $451 in mail plus a small verification charge, with no subscription. The number that matters more is waste: if 10 percent of your list is undeliverable, that same send is really costing you about a dollar per delivered piece.

How does that compare with a $25 gift?

It does not, and the comparison is the point. PostGrid cannot send a gift at all. If you send a $25 gift through a gifting platform you typically pay the $25 item, shipping, and a platform markup or fee, landing somewhere around $32 to $40 delivered. That is roughly 35 to 45 PostGrid postcards. Direct mail and gifting are different budgets doing different jobs, and PostGrid only does the mail one.

Is there a platform fee or do I pay purely per piece?

Under 500 mailings a month you pay purely per piece, because the Starter plan is free. That is unusual and is PostGrid's strongest commercial feature for small businesses. Above 500 pieces a month you move to a quoted Enterprise plan, and there is no published middle tier, so the platform fee question becomes a negotiation rather than a rate card.

How does PostGrid handle address verification and NCOA?

It is CASS certified with USPS, standardizes and corrects addresses, runs delivery point validation, flags residential versus commercial, and applies National Change of Address lookups so recipients who moved are updated instead of mailed. Bulk verification handles up to 200,000 addresses at once, and an autocomplete component stops bad addresses being captured in the first place. This is the part of the product most buyers cite as the reason they chose it.

Can PostGrid prove that a mail piece arrived?

It gives you carrier tracking events per piece showing real-time status through the mail stream, which is strong evidence of delivery and is enough for most compliance and operations purposes. It is not the same as the legally attested proof of delivery you get from Certified Mail, so if a notice needs a signed receipt you want a specialist like LetterStream for those specific pieces.

Can I trigger a send from my CRM without writing code?

Yes. Native connectors for Salesforce, HubSpot, Marketo, ActiveCampaign, and Klaviyo let a workflow fire a physical send, and Zapier covers everything else. That said, the product's centre of gravity is still the API, and template authoring is HTML, so a fully non-technical team will find Postalytics an easier fit.

Does PostGrid mail internationally?

Address verification covers more than 250 countries and territories, and the company operates in the USA, Canada, the UK, and Australia. International postage rates are not published and are described as a contact-sales conversation, so you can verify a global list on a self-serve basis but you cannot model the cost of mailing to it.

Is PostGrid suitable for healthcare or financial notices?

That is a large part of why it exists. PostGrid publishes HIPAA, PHIPA, PIPEDA, GDPR, and SOC 2 coverage, hosts on AWS with end to end encryption of sensitive fields, and supports cheques and statements as first-class formats. Most marketing-oriented direct mail vendors cannot carry protected health information at all.

How does PostGrid compare with using a local print shop?

At a few hundred pieces the unit costs land in the same neighbourhood, and a local printer may beat $0.90 on a plain postcard if you supply artwork and a clean list. What the print shop cannot do is be called by your application, verify and NCOA the list before printing, or tell you whether a specific piece was delivered. If your mail is a scheduled campaign, the print shop is fine. If it is triggered by a customer event, it is not an option at any price.

Editorial verdict

PostGrid is the direct mail API you pick when the address list is the problem. The verification and NCOA layer is the best in this category, the compliance coverage opens healthcare and financial work that marketing-first vendors cannot take, and the free Starter plan is a genuinely usable production plan rather than a trial, which makes it one of the cheapest ways for a small business to start mailing programmatically. The weakness is commercial, not technical: there is no published tier between 500 pieces a month and an Enterprise quote, and no published international postage at all, so the platform is easiest to adopt and hardest to grow into. Start here if you are technical, US or Canadian, and mailing something that has to arrive. Look at Lob or Stannp if you want to see your price at 50,000 pieces before you write any code.

Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.