testmail.app

What it is

Spec sheet

What it does

testmail.app receives, parses, spam-tests and indexes test emails so developers can retrieve them through APIs during end-to-end tests.Read 15 Oct 2026 · testmail.app

Purpose

testmail.app receives, parses, spam-tests, and indexes test emails so they can be retrieved by API for automated end-to-end testing.Read 8 Oct 2026 · testmail.app

Intended users

The maker positions the free plan for side projects and describes Essential as for small projects, while its homepage highlights developers and QA teams.Read 8 Oct 2026 · testmail.app

Trial

New accounts start with a 14 day free trial without a credit card and are automatically downgraded to the free plan afterward.Read 8 Oct 2026 · testmail.app

Integrations

The maker documents examples for using testmail.app with Cypress, Selenium, and TestCafe, including email OTP testing examples.Read 8 Oct 2026 · testmail.app

Security

The maker states that HTTPS/TLS is enforced, data is encrypted in transit and at rest, and logins are passwordless.Read 8 Oct 2026 · testmail.app

Support

The maker says support comes from real engineers and that most priority requests are answered within minutes.Read 8 Oct 2026 · testmail.app

Headquarters

Toronto, CanadaRead 28 Sep 2026 · testmail.app

Addressing model

Emails are sent to [email protected]; tags create new mailboxes without prior registration.Read 15 Oct 2026 · testmail.app

API difference

The docs state that advanced filters, selecting specific fields, and custom sorting are available in GraphQL but not in the simple JSON API.Read 8 Oct 2026 · testmail.app

API limitation

The JSON API accepts GET requests only; GraphQL adds field selection, advanced filters and custom sorting that JSON lacks.Read 15 Oct 2026 · testmail.app

API limits

Free keys are limited to more than 1,000 requests per hour, 10,000 per day and 100,000 per month.Read 15 Oct 2026 · testmail.app

API types

The service provides both a simple JSON API and a full-featured GraphQL API.Read 15 Oct 2026 · testmail.app

APIs

The service offers a simple JSON API and a GraphQL API, and its documentation includes client examples in JavaScript, PHP, Ruby, Python, Go, Bash, C#, and Java.Read 8 Oct 2026 · testmail.app

Attachment limit

The company recommends messages below 5 MB; messages above 10 MB process more slowly and those above 20 MB are rejected.Read 15 Oct 2026 · testmail.app

Client compatibility

The APIs are designed to work with any HTTP or GraphQL client and any programming language or CI/CD environment.Read 15 Oct 2026 · testmail.app

Current status monitoring

The status page exposes separate uptime checks for the website, JSON API, GraphQL API and inbound host.Read 15 Oct 2026 · status.testmail.app

Documentation and support

The docs provide quickstarts, API references, an interactive GraphQL playground, language examples and engineer-based support.Read 15 Oct 2026 · testmail.app

Hosting and retention

The security page says customer data is hosted on AWS, with primary systems in N. Virginia and encrypted backups in Ohio; email is automatically deleted according to the account retention period.Read 8 Oct 2026 · testmail.app

Independent comparison: account requirement

GrabMail reports that testmail.app requires a passwordless account, an assigned namespace and an API key for access.Read 15 Oct 2026 · grabmail.io

Independent comparison: custom domains

GrabMail reports that testmail.app lists custom domains only on the Unlimited plan at $269 per month billed annually.Read 15 Oct 2026 · grabmail.io

Independent comparison: product scope

GrabMail’s comparison describes testmail.app as inbound-only, with namespaces, tags, GraphQL wildcard search, spam scores and live long-poll queries.Read 15 Oct 2026 · grabmail.io

Independent comparison: webhooks

GrabMail’s comparison states that neither service sends mail or provides webhooks.Read 15 Oct 2026 · grabmail.io

Licence

Terms state that all rights, title and interest in the service, software and code belong exclusively to testmail.app, indicating a proprietary service rather than open-source software.Read 15 Oct 2026 · testmail.app

Limit: beginner guidance

A G2 reviewer said beginners must dig through documentation and that a guided tutorial was missing.Read 15 Oct 2026 · g2.com

Limit: occasional delays

A G2 reviewer reported that signup testing can sometimes lag or take longer because of bot-related issues.Read 15 Oct 2026 · g2.com

Mailbox creation

Emails sent to `{namespace}.{tag}@inbox.testmail.app` are routed into mailboxes, with tags allowing addresses and mailboxes to be created on the fly.Read 8 Oct 2026 · testmail.app

Message size

The pricing FAQ recommends keeping total email message size below 5 MB; messages above 20 MB are automatically rejected.Read 8 Oct 2026 · testmail.app

Notable dated update

The privacy-policy changelog records a September 24, 2026 update that removed Sentry and Typeform and added Nolt, PostHog and FullStory as subprocessors.Read 15 Oct 2026 · testmail.app

Outage history

The public status page records an inbound-processing outage around May 13 caused by a significant DDoS attack and receiving delays on April 21.Read 15 Oct 2026 · status.testmail.app

Ownership

The maker describes itself as a small, profitable, 100% employee-owned SaaS company based in Toronto, Canada.Read 15 Oct 2026 · testmail.app

Praise: free tier

G2 reviewers described onboarding as easy and the 100-email free plan as useful for small projects and evaluation.Read 15 Oct 2026 · g2.com

Praise: tagging and namespaces

A G2 reviewer praised the tag/namespace model for quickly isolating parallel tests and retrieving messages reliably.Read 15 Oct 2026 · g2.com

Privacy compliance

The privacy policy says GDPR handling applies to EEA, UK and Swiss users and lists Canada, EU-US Data Privacy Framework and standard contractual clauses for transfers.Read 15 Oct 2026 · testmail.app

Rating on Capterra

0.0 out of 5 from 0 reviewsRead 15 Oct 2026 · capterra.com

Rating on G2

4.3 out of 5 from 3 reviewsRead 15 Oct 2026 · g2.com

Retention behavior

Emails are automatically deleted after plan-based retention periods and there is no delete function in the API or console.Read 15 Oct 2026 · testmail.app

Search and retrieval

Features include wildcard advanced search, live queries, sorting, pagination, attachments and SpamAssassin reports.Read 15 Oct 2026 · testmail.app

Security controls

The security page states TLS 1.2 minimum, TLS 1.3 where supported, encrypted AWS volumes, WAF and DDoS protection, passwordless login and namespace-scoped API keys.Read 15 Oct 2026 · testmail.app

Security hosting

Customer data is hosted on AWS, with primary systems in us-east-1 and encrypted backups in us-east-2.Read 15 Oct 2026 · testmail.app

Team use

All plans allow unlimited collaborators at no extra cost, while the Enterprise plan supports managing multiple separate teams.Read 8 Oct 2026 · testmail.app

Testing integrations

Documentation includes examples for Cypress, Selenium and TestCafe using both JSON and GraphQL APIs.Read 15 Oct 2026 · testmail.app

Usage policy

Paid plans allow temporary email-volume surges without automatic cutoff, but customers who regularly exceed their allowance may be asked to upgrade.Read 8 Oct 2026 · testmail.app

Plans and prices

Every testmail.app plan and price →

Strong points and limits

Who it suits

Verdict

Where Specifiction places it

• Email Testing Software#9 of 288.3