PostGrid vs Thanks.io
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
Still shortlisting? Browse the best in Corporate Gifting & Direct Mail for every option we track, with award winners called out.
The short answer
Both sides assessedPostGrid compared with Thanks.io
Thanks.io has no 500-piece monthly cap and adds handwriting and ten campaign types, at $1.18 per 4x6 postcard on its free plan and $0.77 on the $49 Business plan; PostGrid remains the better choice for address-quality-sensitive transactional mail, Thanks.io for small-business marketing mail that needs to look personal.
Thanks.io compared with PostGrid
PostGrid's free Starter plan puts a 4x6 postcard at about 90 cents with a CASS-certified address engine, but caps the free plan at 500 pieces a month and has no published middle tier above it. Thanks.io costs more per postcard on its free plan ($1.18) and less on Business ($0.77), has no volume cap, and adds handwriting and campaign automation. Take PostGrid for address-quality-sensitive transactional mail; take Thanks.io for small-business marketing mail that needs to look personal.
Choose PostGrid if
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.
Choose Thanks.io if
Small businesses, real estate and mortgage agents, insurance agents, ecommerce brands, and developers who want printed mail with a handwritten look at under two dollars a piece, all-in with postage, with no minimum order and a real API or HubSpot trigger behind it.
Side by side
13 attributes| Attribute | PostGrid | Thanks.io |
|---|---|---|
| Category | Gifting | Gifting |
| Starting price | $0 per month with 4x6 postcards at $0.902 each | $0 per month with 4x6 postcards at $1.18 each, postage included; Business is $49 per month billed monthly |
| Pricing model | 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. | Prepaid account balance drawn down per piece, with an optional monthly plan that lowers every per-piece rate and unlocks automation. All published rates include printing, handwriting, and US postage. Data services are metered separately per lookup. |
| Free plan | Starter: $0 per month, one user, ten templates, a single delivery network, and up to 500 mailings per month at standard per-piece rates. | Pay as you go: $0 per month, every mailer type except gift cards, full REST API, QR codes and scan tracking, per-recipient personalization, and ThanksAI Studio, at the highest per-piece rates and First Class postage only. |
| Free trial | No time-limited trial; the free Starter plan is the evaluation path and is usable in production | No time-limited trial; free physical samples and a $10 signup credit (valid 90 days) with no credit card required |
| 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. | Small businesses, real estate and mortgage agents, insurance agents, ecommerce brands, and developers who want printed mail with a handwritten look at under two dollars a piece, all-in with postage, with no minimum order and a real API or HubSpot trigger behind it. |
| 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. | Minutes to a first send: create an account, pick a template or sync a Canva design, type a message, upload a CSV, and pay from the balance. HubSpot or Zapier triggers take an hour or two; a full API integration using test mode is a day or two of developer time. |
| 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. | Low for single sends and uploads. The campaign builder, evenFLOW pacing, and QR scan actions take a session or two to understand, and the harder skill is writing a short message that does not read like an ad printed in a handwriting font. |
| Platforms | Web dashboard, REST API, Language SDKs, Bulk CSV upload, Webhooks | Web dashboard, REST API v2, Product MCP server, HubSpot, Zapier, Make, n8n, Pipedream, Integrately, Pabbly |
| Compliance | SOC 2, HIPAA, PHIPA, PIPEDA, GDPR, USPS CASS certified | SOC 2 Type I listed as planned on the vendor's trust page (not yet attested), No HIPAA compliance advertised |
| Founded | 2020 | 2017 |
| Headquarters | Boston, Massachusetts, with Canadian origins in Toronto and operations across the USA, Canada, the UK, and Australia | Two Rivers, Alaska, United States (company mailing address) |
| Ownership | Privately held | Privately held, founder-led |
Strengths and limitations
PostGrid
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.
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.
Thanks.io
Strengths
- Postage is included in every published rate and every rate is published, including international, nonprofit, and data-service prices, which removes the arithmetic most direct mail vendors leave to the buyer.
- No minimum order and a $0 plan: a single 4x6 postcard costs $1.18 delivered, and the per-piece rate does not change with batch size.
- A full REST API, OpenAPI spec, and test mode on the free plan, plus webhooks and an agent-ready MCP server with a mandatory cost preview on paid plans.
- Ten campaign types, QR scan actions that can start the next touch automatically, and a native HubSpot integration that is being actively extended.
Limitations
- The handwriting is printed by a digital engine, not written with a pen, so it fails the smudge test that robot-pen vendors pass.
- No compliance attestation yet: the trust page describes SOC 2-aligned controls on AWS and Cloudflare but lists SOC 2 Type I as planned, and HIPAA is not advertised.
- Gift cards are US-only, require a paid plan, and are the only gift option; there is no gift catalog, swag, or recipient-choice flow.
- Standard Mail on paid plans has no USPS tracking and no return-to-sender, and the vendor's own pages disagree on delivery windows.
Pricing compared
PostGrid
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.
- Starter$0
- EnterpriseCustom
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.
Thanks.io
Prepaid account balance drawn down per piece, with an optional monthly plan that lowers every per-piece rate and unlocks automation. All published rates include printing, handwriting, and US postage. Data services are metered separately per lookup.
- Pay as you go$0
- Business$49
- Professional$199
- EnterpriseCustom
On price per physical touch with postage included, Thanks.io is the cheapest handwriting-look option in this category and one of the cheapest ways to mail anything at all: $0.64 to $1.18 for a 4x6 postcard delivered, with no minimum and no required subscription. The comparison that matters is with the pen-and-robot vendors. Handwrytten's cheapest no-commitment card is $3.75 before postage, so a Thanks.io Professional notecard at $1.49 with postage included is well under half the all-in price. What you give up for that is the pen: the handwriting is printed, and a careful recipient can tell. For postcards, farming mail, and post-purchase cards that trade is easily worth it. For a founder's note to a named enterprise buyer, it may not be. Against Lob and PostGrid the postcard rates are similar or better on the paid plans, and Thanks.io adds handwriting, campaign automation, and HubSpot without a developer.
Editorial verdict on each
PostGrid
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.
Read the full PostGrid profileThanks.io
Thanks.io is the cheapest way in this category to put something in a mailbox that looks handwritten, and the most transparent about what it costs: every rate is published, postage is inside it, there is no minimum order, and a $0 plan lets a solo agent send one postcard for $1.18. The automation is real rather than decorative, with ten campaign types, QR scans that trigger the next step, a HubSpot integration being extended month by month, and an API on the free plan. Two things decide whether it is right for you. First, the handwriting is printed, and the company says so; if the pen stroke is the point, buy Handwrytten or Simply Noted and pay two to three times as much. Second, there is no compliance attestation yet, so regulated senders should look at Lob. For a small business, an agent, or an ecommerce brand that wants trackable, personal-looking mail at postcard prices, it is the first product to try.
Read the full Thanks.io profilePostGrid profile last reviewed 2026-08-22; Thanks.io last reviewed 2026-09-26. Pricing is compiled from public sources and can change without notice. See our methodology.
The best in Corporate Gifting & Direct Mail
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Frequently asked questions
6 questionsWhat is the difference between PostGrid and Thanks.io?
Thanks.io has no 500-piece monthly cap and adds handwriting and ten campaign types, at $1.18 per 4x6 postcard on its free plan and $0.77 on the $49 Business plan; PostGrid remains the better choice for address-quality-sensitive transactional mail, Thanks.io for small-business marketing mail that needs to look personal.
Is PostGrid or Thanks.io cheaper?
PostGrid starts at $0 per month with 4x6 postcards at $0.902 each. Thanks.io starts at $0 per month with 4x6 postcards at $1.18 each, postage included; Business is $49 per month billed monthly. The billing models differ, so the entry price is rarely the whole cost. PostGrid pricing model: 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. Thanks.io pricing model: Prepaid account balance drawn down per piece, with an optional monthly plan that lowers every per-piece rate and unlocks automation. All published rates include printing, handwriting, and US postage.
Does PostGrid or Thanks.io have a free plan?
PostGrid has a free plan. Starter: $0 per month, one user, ten templates, a single delivery network, and up to 500 mailings per month at standard per-piece rates. Trial terms: No time-limited trial; the free Starter plan is the evaluation path and is usable in production. Thanks.io has a free plan. Pay as you go: $0 per month, every mailer type except gift cards, full REST API, QR codes and scan tracking, per-recipient personalization, and ThanksAI Studio, at the highest per-piece rates and First Class postage only. Trial terms: No time-limited trial; free physical samples and a $10 signup credit (valid 90 days) with no credit card required.
Who should choose PostGrid?
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.
Who should choose Thanks.io?
Small businesses, real estate and mortgage agents, insurance agents, ecommerce brands, and developers who want printed mail with a handwritten look at under two dollars a piece, all-in with postage, with no minimum order and a real API or HubSpot trigger behind it.
What are the best alternatives to PostGrid and Thanks.io?
SaaSTracker profiles 18 products in Corporate Gifting & Direct Mail. The Summer 2026 awards in the category went to Lob (Category Leader), Poplar (Best Value), PostPilot (Momentum). Every profile is compiled from primary sources, so a shortlist can be built from pricing, limitations, and fit rather than from star ratings.
