vioscale
Comparison

Mailpit vs Testmail.app

On the evidence we track, Testmail.app leads this comparison with a composite score of 82/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Mailpit full profile →Testmail.app full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Mailpit40
★Testmail.app82
Score
Vioscale score
Mailpit40 / 100low · 23%updating
Testmail.app82 / 100low · 42%updating
Pricing
Free tier
Mailpit–
Testmail.app✓
Model
Mailpit–
Testmail.appfreemium
Price level
Mailpit–
Testmail.applow
Starting price
Mailpit–
Testmail.app$12
Transparent
Mailpit–
Testmail.app✓
Integrations
Count
Mailpit1
Testmail.app3
Security
Gdpr
Mailpit–
Testmail.app✓
Vulnerabilities
Reliability
Sla pct
Mailpit–
Testmail.app99.99
Status page
Mailpit–
Testmail.app✓
Adoption
Dependent repos
Mailpit0
Testmail.app–
Github stars
Mailpit10,208
Testmail.app–
Activity
Commits last 30d
Mailpit36
Testmail.app–
Release
Cadence days
Mailpit11
Testmail.app–
History
Mailpit20 items
Testmail.app–
License
Spdx
MailpitMIT
Testmail.app–
Language
Primary
MailpitGo
Testmail.app–
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for email testing dev. “-” means undocumented, not absent.

Capabilities
API assertions
Mailpit-
Testmail.app-
Rendering preview
Mailpit-
Testmail.app-
Spam score check
Mailpit-
Testmail.app-
Blocklist deliverability check
Mailpit-
Testmail.app-
SMS testing
Mailpit-
Testmail.app-
Production sending addon
Mailpit-
Testmail.app-
Ci cd integration
Mailpit-
Testmail.app-
Multi user inboxes
Mailpit-
Testmail.app-
Open source
Mailpit-
Testmail.app-

What each one is

The product in its own terms, so the numbers below have context.

Mailpit

A minimal email testing tool that intercepts SMTP traffic and provides a web UI plus REST API for validating and testing email functionality during development.

Independently observed

Testmail.app

Leader

Provides temporary, addressable mailboxes and APIs enabling developers to capture and verify emails in automated test workflows and CI/CD pipelines without contacting real users.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Mailpit

Pricing not documented yet.

Testmail.app

Leader
from $12/moSubscriptionFree tier14-day trial

From free to $299/month. Free tier with 100 emails/month. 14-day trial.

  • FreeFree
    • 100 emails/month
    • Unlimited users, email addresses, and mailboxes
  • Essential$12/month or $9/month billed annually
    • 10,000 emails/month
    • Full API access
  • Pro$39/month or $29/month billed annually
    • 50,000 emails/month
    • Unlimited custom namespaces
    • Visual email viewer
    • Priority support
  • Enterprise$129/month or $89/month billed annually
    • 1,000,000 emails/month
    • SSO with SAML 2.0 or OIDC
    • SCIM support
    • Enterprise invoicing
    • 99.99% uptime SLA
  • Unlimited$299/month or $269/month billed annually
    • 10,000,000 emails/month
    • All Enterprise features
    • Unlimited custom domains
    • Custom contracts with enterprise compliance support
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Mailpit✓
Testmail.app✓
Deployment
Cloud / SaaS
Mailpit✗
Testmail.app✓
Self-hosted
Mailpit✓
Testmail.app✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Mailpit

1 total
  • SpamAssassin
Independently observed

Testmail.app

Leader
3 total
  • Microsoft Entra ID
  • Okta
  • OneLogin
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.