Litmus vs testmail.app
Litmus
litmus.comtestmail.app
testmail.appSide by side
| Figure | Litmus | testmail.app |
|---|---|---|
| Price from | $79/mo | $9/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 7 | 6 |
| Spec score · Email Testing Software | 8.9 (#4) | 8.3 (#9) |
| Headquarters | Boston, Massachusetts, United States | Toronto, Canada |
| Integrations | Integrations cover ESPs, code editors, Slack, Trello, Dropbox, Google Drive, OneDrive, Salesforce Marketing Cloud, Marketo, and other martech tools. | The maker documents examples for using testmail.app with Cypress, Selenium, and TestCafe, including email OTP testing examples. |
| Intended users | Litmus says it serves marketers and email teams seeking to build, test, analyze, and improve email campaigns. | The maker positions the free plan for side projects and describes Essential as for small projects, while its homepage highlights developers and QA teams. |
| Licence | Litmus is proprietary hosted software; its terms describe subscription services and copyright-protected software and content. | 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. |
| Security | The Validity Trust Center lists Litmus security materials including its Security White Paper and SOC 2 Type 2 report. | The maker states that HTTPS/TLS is enforced, data is encrypted in transit and at rest, and logins are passwordless. |
| Support | Litmus directs customers to its Help Center and support team for product guidance and assistance. | The maker says support comes from real engineers and that most priority requests are answered within minutes. |
| What it does | Litmus is a web-based email development and optimization platform for building, previewing, testing, tracking, and reviewing campaigns. | testmail.app receives, parses, spam-tests and indexes test emails so developers can retrieve them through APIs during end-to-end tests. |
Plans
Litmus
- Litmus Basic$99 a month
- Litmus Plus$199 a month
- Litmus Core$500 a month
- Litmus Basic yearly$79 a month
- Litmus Basic monthly$99 a month
- Litmus Core yearly$417 a month
- Litmus Core monthly$500 a month
testmail.app
- FreeFree
- Essential$9 a month
- Pro$29 a month
- Enterprise$89 a month
- Unlimited$269 a month
- CustomPriced on request
In their own words
Litmus
Litmus is an email workflow platform for building, testing, monitoring, and analyzing campaigns. Teams can preview emails across more than 100 email clients and devices, while Litmus Test automates pre-send quality checks. Its extension can validate links, images, and tracking. Email Guardian monitors deployed emails around the clock and alerts users to issues such as failing links and broken renders. Litmus Builder offers code and visual editors; emails can start from templates, be created from scratch, or be imported from cloud storage. Listed integrations include Salesforce Marketing Cloud, Mailchimp, Marketo, Eloqua, HubSpot, Klaviyo, Slack, Trello, and cloud storage. Some integrations require Plus or Enterprise, and ESP Sync availability depends on the plan and supported provider. REST APIs are available for Email Previews and Email Analytics, with access evaluated case by case. Litmus offers web, extension, and API access. Monthly prices listed are $99 a month for Basic, $199 a month for Plus, and $500 a month for Core. There is no free plan, but a 7-day trial is available.
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.