ColdIQ
API
BenchmarksSkillsPricingImplementation
Get a DemoGet Started

All there is to know about the latest prospecting techniques.

Growth

AgencyInboxesGrow your revenue

Ressources

Tech StackVideo ContentCase StudiesBlogWe're Hiring

GTM Tools

FREE GTM ToolsColdIQ Exclusive DealsAI Sales ToolsLinkedIn ToolsSales ToolsData SourcesAI Marketing ToolsAI AgentsContact us

Free Tools

Email FinderMobile FinderEmail Spam CheckerFind Similar Companies

Get in Touch

Get in touch@MichLiebenMichel Lieben@MichLieben

Copyright 2026 © Cold IQ LLC.

Terms of ServicePrivacy Policy

All rights reserved.

Home→Tools→Postmark

Postmark Review

Postmark

Postmark

Fast, reliable transactional email delivery service

Claim the Product
Get Postmark

Postmark is a fast, reliable email delivery service with API and SMTP for transactional emails. It ensures stellar deliverability and separates promotional from transactional messaging for optimal inbox success.

Deliverability InfrastructureAutomated Email CampaignsTransactional Email ServicesEmail APIsMarketing Automation APIsEmail Marketing APIs
ColdIQ Marketplace

Run every tool in your GTM stack from one API

Stop stacking subscriptions. Call every data provider - emails, phones, enrichment, intent - from Claude Code, billed by credits, on a single API key.

Free to start. No credit card required.

Get Started
ColdIQ

Run GTM from Claude Code with ColdIQ.

Stop managing 39 tools. Ship GTM from Claude Code with ColdIQ.

Get started

Postmark Core Capabilities

Email API
SMTP service
Message Streams

Links

Visit Website

Social

LinkedInLinkedIn

Pricing

From$15.00/mo
BillingPer transaction
TrialAvailable

Who is Postmark for?

Agencies
Startups
Enterprise

Is Postmark easy to use?

5m30m1h2h3hCustom

What are Postmark alternatives?

SendGrid
SendGrid
Email platform for scalable, reliable delivery
View
Pricing: Starting at $19.95
Trial: Available, 60 days of trial.
Email Sender
Deliverability Infrastructure
Buyer Engagement
SMS Transactional Messaging
Transactional Email Services
Email APIs
Mailgun
Mailgun
Transactional email delivery, validation, optimization API
View
Pricing: Starting at $15.00
Trial: Available, 30 days of trial.
Email Sender
Deliverability Infrastructure
Email Spam Tester
Email Verification
Transactional Email Services
Email APIs
Resend
Resend
Deliver transactional and marketing emails easily.
View
Pricing: Starting at $20.00
Trial: Trial isn't available.
Email Sender
Automated Email Campaigns
Email APIs
Marketing Automation APIs
Email Marketing APIs
Email Tracking APIs
Email on Acid
Email on Acid
Email Pre-Deployment Checklist
View
Pricing: Starting at $74.00
Trial: Available, 7 days of trial.
Email Spam Tester
Featured
Instantly

Instantly

Cold Email Software

Find warm leads with filters
Scale outreach with unlimited emails
Boost deliverability and sender reputation
Starting at $42.3Learn More

Who uses Postmark?

Max Roslyakov
Max Roslyakov
Founder at FatGrid
View tech stack →
View all tech stacks

What is Postmark

Postmark is an email delivery service designed for transactional and marketing emails. It ensures your emails reach inboxes quickly and reliably, focusing on speed and deliverability. People choose Postmark because it’s stable, easy to use, and offers clear documentation and support. The tool works best for sending transactional emails like password resets, order notifications, and alerts. You can start sending emails within minutes using its API or SMTP. Users often notice emails arriving in seconds, offering fast time-to-value. Postmark fits into your tech stack as a dedicated email delivery platform, complementing CRM or marketing tools. It is not meant for managing entire marketing campaigns or contact lists but excels at sending critical, time-sensitive emails without delays or hassles.

Ideal Customer Profile

Postmark is recommended for businesses and developers who need fast, reliable transactional email delivery with great support and easy integration. Trusted by companies like Faire.com and 1Password, it helps you focus on building great products without worrying about emails.

AgenciesStartupsEnterprise

Key Features

Email API
SMTP service
Message Streams
Transactional email
Email templates
Inbound email

Pricing

Postmark offers a free Developer tier with 100 emails/month and no expiration, plus paid plans starting at $15/month. Basic, Pro ($16.50/mo), and Platform ($18/mo) plans differ by email overage costs ($1.80, $1.30, $1.20 per 1,000), number of custom sending domains (5 to unlimited), data retention options (45 to 365 days), and inbound email processing availability. Unlimited daily emails, detailed analytics, and customizable features scale with your business size.

Starting price$15.00
TrialAvailable

Free

Free

Per User, Monthly

It includes

  • 100 emails/month
  • No overages
  • Testing integration
  • Side projects
  • No credit card
  • No custom domains

Basic

$15.00

Per User, Monthly

It includes

  • Unlimited emails/day
  • 5 custom domains
  • Extra $1.80/1000
  • 45-day retention
  • Detailed analytics
  • For solo developers

Pro

$16.50

Per User, Monthly

It includes

  • Unlimited emails/day
  • 10 custom domains
  • Extra $1.30/1000
  • Inbound email
  • 365-day retention opt.
  • For startups, SMBs

Platform

$18.00

Per Team, Monthly

It includes

  • Unlimited emails/day
  • Unlimited domains
  • Extra $1.20/1000
  • Inbound email
  • 365-day retention opt.
  • For agencies, teams

Don't want a Postmark subscription?

Get Postmark and your whole GTM stack from one API key with ColdIQ.

Get started

How simple is Postmark setup?

5m30m1h2h3hCustomIntermediateComplexity

Postmark implementation requires basic configuration like generating an API token and setting up your sending domain, which can be done solo within minutes. Simply connect your app or service to Postmark’s API or SMTP using provided libraries and start sending transactional emails quickly.

Frequently asked questions

How to use Postmark?
Use Postmark's API or SMTP service to send transactional emails easily, integrating with various stacks and workflows in minutes.
How much is Postmark?
Plans start free with 100 emails/month; paid tiers range from $15 to $18/month with extra emails priced per 1,000 sent.
Why choose Postmark?
Postmark offers ultra-fast delivery, reliable inbox arrival, customizable data retention, and detailed analytics for transactional email success.
How does Postmark work?
Postmark routes transactional and bulk emails separately for faster delivery and processes inbound emails into easy-to-use webhooks.
Is Postmark free?
Yes, the free plan includes 100 emails monthly with no credit card required and no expiration.
Is Postmark a partner?
Yes, Postmark partners with agencies, startups, and enterprises, offering programs like referral partnerships and integrations.
How to learn Postmark?
Learn via their API docs, migration guides, email guides, webinars, and quickstart tutorials available on the Postmark website.
What are Postmark alternatives?
Popular alternatives include SendGrid, Mailgun, Amazon SES, SparkPost, and Mandrill.
What are Postmark reviews?
Users praise Postmark's stability, fast delivery, ease of use, and excellent support with over 86% customer happiness.
Does Postmark have an API?
Yes, Postmark provides a robust REST API and SMTP service for seamless email sending and management.
Does Postmark have a trial or a demo?
Yes, Postmark offers a free trial with 100 emails per month and no credit card needed.
Ask aboutPostmarkPostmark

Who uses Postmark?

Max Roslyakov
Max Roslyakov
Founder at FatGrid
Featured
Cobl

Cobl

Proposals that win, built from your real sales context.

Connectors / Files
Memory & Knowledge reuse
Style extractor
Starting at $29Learn More