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ToolGPA

Postmark vs SMTP2GO

We give Postmark and SMTP2GO the same GPA: 2.2 out of 4.0. Postmark grades higher on features. SMTP2GO grades higher on value for money. They get the same grade on the free plan, ease of use and platforms.

Price, platforms and features side by side. The table says where each price was read and when.

Postmark

Transactional email API and SMTP, with broadcasts on a separate stream

Free plan · from $15/mo
Full detailspostmarkapp.com

SMTP2GO

SMTP relay and email API priced by emails a month, with a free plan

Free plan · from $15/mo
Full detailssmtp2go.com

How we grade them

2.2GPAPostmarkFair2.2GPASMTP2GOFair
Value for money
DGraded on 50,000 emails a month: $55 on Basic or $60.50 on Pro, billed monthly only. That's the dearest in this category at that volume, roughly twice the middle. Bootstrapped companies can ask for $75 of credit, which helps a bit.
CGraded on 50,000 emails a month: Starter is $30 a month at that volume, with two months free if you pay yearly. That sits in the middle of what this category charges for that much sending. A dedicated IP and email testing need Professional at $75.
Free plan and trial
CA free developer plan that never expires and needs no card, but it's 100 emails a month with no way to buy more. That's for testing an integration, not running an app.
CFree for good with no card: 1,000 emails a month, but only 200 a day, with 5 days of reports, and extra emails can't be bought. Chat and phone help last 14 days. Fine for a test, tight for a live app.
Features
BAPI and SMTP with SDKs, separate streams for app and bulk email, inbound email turned into JSON, templates, 45 days of message history and DMARC reports as an add-on. It covers the whole job; inbound needs Pro.
CAPI and SMTP sending, automatic SPF and DKIM, delivery reports with bounce alerts, blacklist monitoring, three data regions and subaccounts. It does the sending job fully, but that's a smaller job: nothing on record covers receiving email or templates.
Ease of use
CJudged on how fast a developer sends a first email: official SDKs, a sandbox mode, ready-made templates for resets and receipts, and migration guides. You'll still verify a domain first. No rating on record.
CJudged on how fast a developer sends a first email: copy the SMTP details or use the API, with code examples in five languages, once your domain is added. No rating on record. Sign-up refuses Gmail and Yahoo addresses, so you need a work domain.
Platforms and integrations
BWeb, with an API and SMTP, plus Zapier, WordPress, Stripe, Slack, Supabase, Bubble, Netlify and Datadog. No desktop or phone app, so B is the top.
BWeb, with an SMTP relay and REST API that work from apps, servers and devices, plus WordPress, Google Workspace, Salesforce, Zoho CRM, Pipedrive, WHMCS, Laravel and Django. No desktop or phone app, so B is the top.
Best forapp email kept apart from marketing sendsrelaying email from apps, sites and office printers

The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Postmark and SMTP2GO. How we grade

Price against what you get

Postmark starts at $15 a month and scores 2.7 out of 4 on features, ease of use and platforms. SMTP2GO starts at $15 a month and scores 2.3.

Postmark scores higher for the same starting price. Of the other email sending services on the chart, none scores higher than Postmark for less, and 2 score higher than SMTP2GO for less.

Features, ease of use and platforms, averaged

C2.0B3.0A4.0$5$10$20$50More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessPostmarkSMTP2GO

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email sending services, and the best at every price

Where they differ

  • Postmark starts at $15 per month for 10,000 emails. SMTP2GO starts at $15 per month for 10,000 emails, billed monthly.
  • Postmark also covers dMARC.
In commonFree planWebPublic APITransactional email

At a glance

PostmarkSMTP2GO
PricingFree planFree plan
Starts at$15 per month for 10,000 emails$15 per month for 10,000 emails, billed monthly
Free planFree developer plan: 100 emails a month with no expiry and no overages, for testing an integration or a small side project. No credit card needed.1,000 emails a month, limited to 200 a day, with 5 days of email reporting and ticket support. Extra emails are not allowed. No credit card needed.
Free trialNone listedNone listed
Web
Made byActiveCampaign, LLCSMTP2GO
Price read frompostmarkapp.comsmtp2go.com
CheckedOct 18, 2026Oct 18, 2026

Who each one suits

Postmark

  • Software teams whose password resets and receipts must arrive fast
  • Apps that need to receive and parse incoming email
  • Bootstrapped founders, who can ask for $75 of credit

SMTP2GO

  • Small businesses sending app or website email at low volume
  • Schools and offices relaying mail from systems, printers and scanners
  • IT providers managing sending for several clients

Worth knowing

Postmark

  • There is no tier between the free 100 emails a month and the 10,000-email paid plans.
  • Billing is monthly only; the FAQ says annual plans are not offered yet.
  • Basic has no inbound email processing and caps users at 4 and sending domains at 5.
  • Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.

SMTP2GO

  • The free plan stops at 1,000 emails a month and 200 a day, and extra emails cannot be bought on it.
  • A dedicated IP address and email testing tools start with Professional at $75 a month.
  • Email reports are kept for 30 days on paid plans and 5 days on the free plan.
  • Sign-up asks for an email address at a private domain; Gmail and Yahoo addresses are refused.

Key features

Postmark

Email API and SMTP
Send through a REST API with official SDKs or through SMTP, with batch sending, a sandbox mode and migration guides from other providers.
Message streams
Transactional and bulk or broadcast email run on separate sending infrastructure, so marketing sends do not affect password resets and receipts.
Inbound email processing
Pro and Platform turn incoming email into a JSON object and post it to a webhook URL your app handles.
Templates
Responsive templates for welcome emails, password resets and receipts, with a template editor and import tool.
Message history and analytics
45 days of full message content by default, adjustable from 7 to 365 days, with bounce details, open and link tracking and a stats API.
DMARC monitoring
DMARC Digests reports show authentication problems and who is sending with your domain, sold as an add-on from $14 a month per domain.

SMTP2GO

SMTP relay and HTTP API
Send through SMTP from an app, a mail client, a server or a device, or through a REST API with code examples in JavaScript, Node.js, PHP, Ruby and Python.
Delivery tracking and reports
Real-time reports follow each email to delivery and show bounces, spam complaints and unsubscribes, with weekly summaries and alerts on sudden bounce rises.
Automatic SPF and DKIM
Domain authentication is handled for you, along with feedback loops, blacklist monitoring and spam trap detection on every plan.
Data centers in three regions
Choose to send from and store data in the US, Europe or Australia, with best-path routing to the nearest location.
Email testing
Professional adds previews in more than 40 email clients and checks against major spam filters before you send.
Subaccounts
Paid plans can split sending into subaccounts, which suits agencies and managed service providers looking after several clients.

Plans

Postmark

  • Free$0

    100 emails a month, never expires; extra emails cannot be bought on this plan.

  • Basic$15

    per month for 10,000 emails

    5 sending domains, 4 users, 45 days of history, no inbound email. Extra emails $1.80 per 1,000; $55 a month at 50,000 emails.

  • Pro$16.50

    per month for 10,000 emails

    10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.

  • Platform$18

    per month for 10,000 emails

    Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.

  • High volumeCustom

    Custom pricing for large senders, arranged through sales.

SMTP2GO

  • Free Plan$0

    1,000 emails a month and 200 a day, 5 days of reports, ticket support; chat and phone support for the first 14 days only.

  • Starter$15

    per month for 10,000 emails, billed monthly

    30 days of reports, ticket, chat and phone support, subaccounts and SMS. Extra emails $1.20 per 1,000. Price rises with volume: $30 a month at 50,000 emails.

  • Professional$75

    per month for 100,000 emails, billed monthly

    Adds a dedicated IP address and email testing tools. Extra emails cost $0.85 per 1,000, and the price rises with volume.

  • PremierCustom

    Over 3 million emails a month, with personalized setup and support.

Ways to pay less

Postmark

  • Startups

    $75 credit for bootstrapped companies

    Companies that have launched, are charging for their product and have taken no outside investment can ask support for $75 of account credit.

SMTP2GO

  • Annual discount

    Two months free with yearly billing

    Paying yearly gives two months free: Starter at 10,000 emails is $150 a year instead of $180, and Professional at 100,000 is $750 instead of $900.

  • Education

    30% education discount

    SMTP2GO's education page offers schools a 30% discount, with unlimited users and systems on one account.

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