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Home/Compare/Postmark vs Clerk

Postmark vs Clerk

A side-by-side comparison of pricing, plans, and recent product updates. Pricing data last refreshed May 14, 2026.

Postmark

Reliable transactional email.

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Category
email
Plans tracked
4
Entry price
$15/mo
Free plan?
Yes
See full Postmark pricing & changelog →

Clerk

The most comprehensive User Management Platform.

Visit →
Category
auth
Plans tracked
4
Entry price
$25/mo
Free plan?
Yes
See full Clerk pricing & changelog →

Plan-by-plan pricing

Postmark

Free

Postmark

Free
  • Test your integration with 100 emails/month
  • No overages allowed in this plan
  • Perfect for testing and side projects with low volume
  • Up to 10 custom sending domains
  • Up to 10 servers
  • + 1 more

Basic

Postmark

$15/mo
  • Extra emails @ $1.80 / 1,000
  • Industry-leading deliverability rates & speed
  • 45-day data retention
  • 5 Custom sending domains
  • Unlimited emails/day
  • + 1 more

Pro

Postmark

$16.5/mo
  • Extra emails @ $1.30 / 1,000
  • Customizable data retention up to 365 days (45-day default)
  • 10 Custom sending domains
  • Inbound email processing
  • Unlimited emails/day
  • + 1 more

Platform

Postmark

$18/mo
  • Extra emails @ $1.20 / 1,000
  • Customizable data retention up to 365 days (45-day default)
  • Unlimited Custom sending domains
  • Inbound email processing
  • Unlimited users
  • + 1 more

Clerk

Hobby

Clerk

Free
  • Up to 3 dashboard seats
  • Unlimited applications
  • 50,000 MRU limit per app
  • Up to 5 user impersonations
  • Custom domain
  • + 1 more

Pro

Clerk

$25/mo
  • Up to 3 dashboard seats
  • 50,000 MRU included per app
  • 1 Enterprise connection included
  • Remove Clerk branding
  • Multi-factor authentication (MFA)
  • + 1 more

Business

Clerk

$300/mo
  • 10 dashboard seats included
  • Additional seats $20/mo each
  • SOC2 Report
  • Enhanced dashboard roles
  • Priority support
  • + 1 more

Enterprise

Clerk

Custom
  • Annual committed use discounts
  • 99.99% Uptime SLA
  • Enterprise SSO for workspace
  • Premium support SLA + dedicated slack channel
  • HIPAA compliance available with BAA
  • + 1 more

Postmark vs Clerk FAQ

Postmark vs Clerk: which is cheaper?
Postmark starts at $15/mo, while Clerk starts at $25/mo in the latest snapshot.
Does Postmark or Clerk have a free plan?
Both Postmark and Clerk show a free plan in the latest snapshot, so the plan tables above are the fastest way to compare limits.
Is Postmark a good email alternative to Clerk?
Postmark is tracked in email, while Clerk overlaps for similar buyers. Use the changelog section below to compare shipping cadence before you choose.
How often is this Postmark vs Clerk comparison updated?
TrackRival refreshes pricing snapshots daily and appends new changelog entries whenever either product ships a release.

Recent product updates

What each team shipped most recently.

Postmark

No recent updates tracked.

See all Postmark updates →

Clerk

  • May 6, 2025
    Improved observability with Application Logs

    Clerk's new Logs page tracks sign-ins, updates, billing, and other events with filtering and full detail views.

  • Apr 22, 2025
    Clerk CLI

    Clerk CLI is an open-source terminal tool for managing Clerk projects, settings, and resources via commands like init, config, and api.

  • Apr 17, 2025
    API Keys General Availability

    Clerk API keys are now generally available with free monthly allocations for creations and verifications, followed by usage-based pricing.

See all Clerk updates →

Which should you pick?

Both Postmark and Clerk serve overlapping audiences (Postmark in email, Clerk in auth).

  • Choose Postmark if you value: reliable transactional email.
  • Choose Clerk if you value: the most comprehensive user management platform.
  • Subscribe to TrackRival if you want to be notified whenever either of them changes pricing or ships a major update — so you can react before your competitors do.

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