testmail.app

Mailinator alternative built for scale

As your tests grow, Mailinator's limits can become harder to manage. testmail.app offers unlimited inboxes, unlimited users, and pricing that stays affordable as you scale.

Helping teams at

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Get started with our free forever plan

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testmail.app vs Mailinator: a direct comparison

More email volume at a lower price and no daily email caps.
testmail.app
Mailinator
Enterprise
Plan name
Business Plus
Plan name
1,000,000
Emails/m
300,000
Emails/m
Unlimited
Users
10
Users
No
Daily limit
Yes
Daily limit
✓
Load testing
✗
Load testing
$129/m
$89/m annually
$199/m
$159/m annually

*Pricing as on May 2026

Testing attachments?
testmail.app starts at
$9/m
Mailinator starts at
$79/m
Need load testing?
testmail.app starts at
$29/m
Mailinator starts at
$699/m
Need users?
testmail.app starts at
Free
Mailinator starts at
$79/m

See your savings at any volume

testmail.app
Mailinator
Price: billed annually
$0/m$50/m$200/m$500/m$1000/m1k emails/m10k emails/m100k emails/m1M emails/m10M emails/m$79/m · Mailinator · Business$29/m · testmail.app · Pro50k emails/m
At 50k emails/month
testmail.app: $29|Mailinator: $79
63%
less /month
$600/year
saved with testmail.app
Mailinator pricing verified May 2026

Switching from Mailinator to testmail.app?

Reach out to us at [email protected], and we'll send you our migration guide and help you get set up.

Highlights

Namespace-based inbox isolation for parallel CI/CD testing

testmail.app uses a namespace-and-tag address format — {namespace}.{tag}@inbox.testmail.app — where every unique tag is a fully isolated inbox created instantly, with no setup. Change the tag per test run and parallel tests never read each other's emails.

Namespace-based inbox isolation for parallel CI/CD testing

Test every email your application sends — end-to-end

Capture signup verification, password reset links, magic links, 2FA codes, order confirmations, and drip triggers in private inboxes. Use the API to retrieve each email, extract the link or token, and continue the test programmatically — across local development, shared staging environments, and CI pipelines.

Test every email your application sends — end-to-end

GraphQL and REST API — query exactly the email you need

Query emails by sender, tag, subject, or body content with wildcard matching and live queries — so your tests wait for the right email to arrive instead of sleeping on a timer.

  • Full header inspection, attachment access, and spam score via API
  • No proprietary SDK required — standard HTTP or GraphQL
  • Paginated results, date filtering, and wildcard search built in
GraphQL and REST API — query exactly the email you need

Signup and get your API key

it takes 30 seconds

FAQ

Why choose testmail.app over Mailinator?

testmail.app offers more email volume, unlimited users, and no daily sending limits at a lower price point — making it one of the highest value-for-money options for teams that need reliable, scalable email testing without hitting artificial ceilings.

Can I migrate from Mailinator to testmail.app easily?

If you are switching from Mailinator, simply search your QA codebase for Mailinator use and replace those instances with testmail.app APIs instead — or Claude can do this for you! See our comprehensive documentation with examples in all popular languages and testing frameworks.

What is the best Mailinator alternative for QA?

For QA teams that need private, isolated inboxes, automated email assertions, and clean separation between environments, testmail.app is the strongest alternative to Mailinator — and one of the highest value-for-money options in the market.

What is the Mailinator inbox equivalent in testmail.app?

Mailinator's private domains are dedicated inboxes accessible only to your team — in testmail.app, namespaces serve the same purpose. Every email is received at {namespace}.{tag}@inbox.testmail.app, where the tag can be anything you choose, giving you unlimited unique inboxes with no extra setup.

On Pro and above you get unlimited custom namespaces. If you need to receive email at your own domain, custom domains are available on the Enterprise plan ($89/m) and above.

testmail.app pricing

FreeFor side projects

$0

/m

always free,
forever

  • 100
    emails/month
  • Unlimited users, email addresses, and mailboxes
  • 1 day retention
  • One random
    namespace
EssentialFor small projects

$9

/m

billed annually
or $12 monthly

  • 10,000*
    emails/month
  • Unlimited users, email addresses, and mailboxes
  • 1-3 days retention
  • One random
    namespace
  • Full API access
ProMost popular

$29

/m

billed annually
or $39 monthly

  • 50,000*
    emails/month
  • Unlimited users, email addresses, and mailboxes
  • 1-30 days retention
  • Unlimited custom namespaces
  • Full API access +
    visual viewer
  • Priority support
EnterpriseFor power users

$89

/m

billed annually
or $129 monthly

  • 1,000,000*
    emails/month
  • Unlimited users, email addresses, and mailboxes
  • Custom retention
  • Unlimited custom namespaces
  • Full API access +
    visual viewer
  • Priority support
  • SSO with SAML 2.0 or OIDC
  • Enterprise invoicing
  • 99.99% uptime SLA
  • Plus add-ons
UnlimitedBest of everything

$269

/m

billed annually
or $299 monthly

  • 10,000,000*
    emails/month
  • All Enterprise features and:
  • Unlimited teams
  • Unlimited custom domains
  • Custom contracts with enterprise compliance support
  • SCIM support
Custom> 10 million emails/m?
Get a quote
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