testmail.app vs Unspam.email
testmail.app
testmail.app
Unspam.email
unspam.emailSide by side
| Figure | testmail.app | Unspam.email |
|---|---|---|
| Price from | $9/mo | $5/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 6 | 7 |
| Spec score · Email Testing Software | 8.3 (#9) | 8.3 (#10) |
| API limits | Free keys are limited to more than 1,000 requests per hour, 10,000 per day and 100,000 per month. | API and MCP requests are limited to 100 requests per minute per authenticated account, with 429 responses after the limit. |
| Headquarters | Toronto, Canada | The company lists 167 Madison Avenue, Suite 205, New York, New York 10016, United States, and a Barcelona office. |
| Integrations | The maker documents examples for using testmail.app with Cypress, Selenium, and TestCafe, including email OTP testing examples. | The API is designed to receive real messages from SES, Postmark, SendGrid, Mailgun or a customer’s SMTP system. |
| 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. | The company describes the platform as serving marketers, founders, agencies, and product teams. |
| Purpose | testmail.app receives, parses, spam-tests, and indexes test emails so they can be retrieved by API for automated end-to-end testing. | Unspam is an email deliverability platform that checks spam signals, sender authentication, blacklists, previews, heatmaps, and inbox placement. |
| Rating on Capterra | 0.0 out of 5 from 0 reviews | 5.0 out of 5 from 1 review. |
| Rating on G2 | 4.3 out of 5 from 3 reviews | 4.8 out of 5 from 32 reviews. |
| Security | The maker states that HTTPS/TLS is enforced, data is encrypted in transit and at rest, and logins are passwordless. | The privacy policy says stored data is kept on services and providers certified to ISO/IEC 27001:2013, PCI DSS, SOC 1 Type II, and SOC 2 Type II or higher. |
| Support | The maker says support comes from real engineers and that most priority requests are answered within minutes. | The company lists support chat and [email protected] for support or product inquiries. |
| 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. | Unspam.email is a deliverability platform combining spam tests, authentication and blacklist checks, previews, heatmaps and inbox-placement testing. |
Plans
testmail.app
- FreeFree
- Essential$9 a month
- Pro$29 a month
- Enterprise$89 a month
- Unlimited$269 a month
- CustomPriced on request
Unspam.email
- FreeFree
- No accountFree
- Custom plan$5 a month
- Basic$9 a month
- Business$19 a month
- Agency$29 a month
- White LabelPriced on request
In their own words
testmail.app
testmail.app receives, parses, spam-tests, and indexes test emails for automated end-to-end testing. Messages sent to addresses such as `{namespace}.{tag}@inbox.testmail.app` are routed into mailboxes, allowing tests to create addresses and mailboxes dynamically. The service provides simple JSON and GraphQL APIs, with client examples for JavaScript, PHP, Ruby, Python, Go, Bash, C#, and Java. Search includes wildcard queries, live waits for new mail, sorting, pagination, attachments, and SpamAssassin reports. GraphQL adds advanced filters, field selection, and custom sorting unavailable in the simple JSON API. Documented integrations cover Cypress, Selenium, TestCafe, and email OTP testing. New accounts receive a 14-day trial without a credit card, then move to the free plan. Free includes 100 emails monthly and one-day retention. Paid plans start at $9/mo (annual). Hosting uses AWS, with encrypted data and passwordless logins.
Unspam.email
Unspam.email is an email deliverability platform for examining spam signals, sender authentication, blacklists, previews, and inbox placement. Spam tests assess authentication, sender reputation, blacklists, and message content, then show which checks affected the score. Inbox placement tests send a campaign to seed mailboxes at Gmail, Outlook, Yahoo, and other providers and report where it landed. Email previews cover rendering across more than 50 real clients and devices in light and dark modes. Scheduled tests can track placement and spam scores and send alerts by email when results decline. Its API has 39 endpoints across seven areas and can test mail sent through SES, Postmark, SendGrid, Mailgun, or a sender’s own SMTP setup; an MCP server lets compatible AI clients run tests and retrieve results. The free plan includes 21 tests per month, unlimited sender accounts, and 14-day data retention, but excludes DMARC monitoring and full API access. Custom costs $5 a month, with a $5 monthly minimum and pay-per-test rates.