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testmail.app review

Freemium#23 of 27 in Email Testing Software

A practical choice for automated inbox testing with temporary mailboxes and APIs.

6.2/10Editor score
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testmail.app6.2 Visit testmail.app

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

testmail.app is a cloud email-testing service for developers and QA teams. It provides temporary email addresses and mailboxes for automated end-to-end tests, receives and parses messages, indexes email content, and exposes results through JSON and GraphQL APIs. Teams can use namespaces and tags to isolate test flows, while filters, wildcard search, live queries, pagination, and custom sorting help retrieve specific messages. The service is available through the web and API, with features for CI/CD workflows, shared namespaces, API-key management, and team members.

Pricing spans a free plan and paid tiers. The Free plan includes 100 emails per month, unlimited users, email addresses, and mailboxes, one day of retention, and one random namespace. Essential costs $9 per month with annual billing or $12 per month with monthly billing, raising the allowance to 10,000 emails and adding full API access, with 1–3 days of retention. Pro costs $29 annually billed or $39 monthly, includes 50,000 emails, 1–30 days of retention, unlimited custom namespaces, a visual viewer, and priority support. Enterprise provides 1,000,000 emails per month, custom retention, and the Pro features at $89 annually billed or $129 monthly. Unlimited costs $269 per month with annual billing and adds 10,000,000 emails, unlimited teams, unlimited custom domains, custom contracts with enterprise compliance support, and SCIM support.

Its strongest fit is inbox automation rather than broad visual rendering or general email QA. JSON and GraphQL access, live queries that wait for incoming emails, attachment retrieval, and SpamAssassin scores make it suitable for automated test flows that need structured results. The 14-day trial requires no credit card before downgrading to the free plan. Choose testmail.app when temporary inboxes, API access, filtering, and mailbox isolation are central requirements; teams seeking a wider rendering-focused testing scope should consider a different category fit.

testmail.app pros and cons

  • Where it wins
    • JSON and GraphQL APIs support automated email retrieval
    • Temporary mailboxes, namespaces, tags, and live queries
    • SpamAssassin reports plus attachment and email-content retrieval
  • Where it doesn't
    • Free plan is limited to 100 emails per month
    • Broader visual email rendering and QA are not its primary focus
    • Paid subscription amounts are non-refundable under the Terms of Service

testmail.app fact sheet, pricing and score →

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