# Mailosaur vs Testmail.app

**Leader by Vioscale score:** Testmail.app

| Attribute | Mailosaur | Testmail.app |
|---|---|---|
| **Vioscale score** | 60.5 (55% (medium)) | 82.2 (42% (low)) |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | Provides tools for validating emails and SMS messages through dedicated inboxes and phone numbers, with rendering previews across devices and email clients, integration into CI/CD pipelines, and automation via APIs and testing framework support. | Provides temporary, addressable mailboxes and APIs enabling developers to capture and verify emails in automated test workflows and CI/CD pipelines without contacting real users. |
| features.capabilities | `{"sms_testing":true,"api_assertions":true,"spam_score_check":true,"ci_cd_integration":true,"rendering_preview":true,"multi_user_inboxes":true}` | - |
| integrations.count | 20 | 3 |
| integrations.list | `[{"name":"Selenium"},{"name":"Playwright"},{"name":"Cypress"},{"name":"TestCafe"},{"name":"WebdriverIO"},{"name":"Cucumber"},{"name":"Robot Framework"},{"name":"Ghost Inspector"},{"name":"Postman"},{"name":"Insomnia"},{"name":"PowerShell"},{"name":"Node.js"},{"name":"Java"},{"name":"Python"},{"name":"Ruby"},{"name":".NET"},{"name":"PHP"},{"name":"Go"},{"name":"JavaScript"},{"name":"Okta"},{"name":"Microsoft Entra"}]` | `[{"name":"Microsoft Entra ID"},{"name":"Okta"},{"name":"OneLogin"}]` |
| market.availability | `{"hqCountry":"GB","primaryMarkets":["GB","US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"CA","primaryMarkets":["US","CA"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"web":true}` |
| pricing | `{"type":"subscription","plans":[{"free":false,"name":"Personal","summary":"$20/month (billed annually)","features":["Email compatibility testing","API for test automation","Forward emails to external addresses"],"minSeats":1,"components":[{"kind":"fixed","amount":20,"period":"month","currency":"USD"}],"description":"For individuals requiring email testing essentials","contactSales":false,"includedLimits":{"users":"1 (support for up to 3)","inboxes":"1","emails_per_month":"15,000"}},{"free":false,"name":"Core","summary":"$50/month (popular)","features":["Team access","Multiple inboxes","Email accessibility testing","Mail rules","POP3/IMAP connectivity","SMS support"],"minSeats":5,"components":[{"kind":"fixed","amount":50,"period":"month","currency":"USD"}],"description":"Collaborative testing scaled for teams","contactSales":false,"includedLimits":{"users":"5 seats","emails_per_month":"75,000"}},{"free":false,"name":"Enterprise","features":["Custom users and inboxes","SSO (SAML2/OIDC)","Separate permissions","Enterprise security","Account manager","Advanced support with SLAs"],"contactSales":true}],"addOns":[{"name":"SMS and authentication","components":[{"kind":"fixed","amount":37.5,"period":"month","currency":"USD"}]},{"name":"Email previews","components":[{"kind":"fixed","amount":25,"period":"month","currency":"USD"}]}],"summary":"From $20/month (billed annually). Free 14-day trial.","currency":"USD","freeTier":false,"sourceUrl":"https://mailosaur.com/pricing","retrievedAt":"2026-08-25T12:08:17.001Z","freeTrialDays":14,"startingPrice":{"amount":20,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Free","summary":"Free forever","features":["100 emails/month","Unlimited users, email addresses, and mailboxes"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"For side projects","contactSales":false,"includedLimits":{"emails_per_month":"100"}},{"free":false,"name":"Essential","summary":"$12/month or $9/month billed annually","features":["10,000 emails/month","Full API access"],"components":[{"kind":"fixed","amount":12,"period":"month","currency":"USD"}],"description":"For small projects","contactSales":false,"includedLimits":{"emails_per_month":"10,000"}},{"free":false,"name":"Pro","summary":"$39/month or $29/month billed annually","features":["50,000 emails/month","Unlimited custom namespaces","Visual email viewer","Priority support"],"components":[{"kind":"fixed","amount":39,"period":"month","currency":"USD"}],"description":"Most popular","contactSales":false,"includedLimits":{"emails_per_month":"50,000"}},{"free":false,"name":"Enterprise","summary":"$129/month or $89/month billed annually","features":["1,000,000 emails/month","SSO with SAML 2.0 or OIDC","SCIM support","Enterprise invoicing","99.99% uptime SLA"],"components":[{"kind":"fixed","amount":129,"period":"month","currency":"USD"}],"description":"For power users","contactSales":false,"includedLimits":{"emails_per_month":"1,000,000"}},{"free":false,"name":"Unlimited","summary":"$299/month or $269/month billed annually","features":["10,000,000 emails/month","All Enterprise features","Unlimited custom domains","Custom contracts with enterprise compliance support"],"components":[{"kind":"fixed","amount":299,"period":"month","currency":"USD"}],"description":"Best of everything","contactSales":false,"includedLimits":{"emails_per_month":"10,000,000"}}],"summary":"From free to $299/month. Free tier with 100 emails/month. 14-day trial.","currency":"USD","freeTier":true,"sourceUrl":"https://testmail.app/pricing/","retrievedAt":"2026-08-18T22:37:35.186Z","freeTrialDays":14,"startingPrice":{"amount":12,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | no | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | mid | low |
| pricing.starting_price | `{"amount":20,"currency":"USD"}` | `{"amount":12,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | yes |
| security.iso27001 | yes | - |
| security.pci | yes | - |

## Capabilities (Email Testing Dev)

| Capability | Mailosaur | Testmail.app |
|---|:--:|:--:|
| **Capabilities** |  |  |
| API assertions | ✓ | - |
| Rendering preview | ✓ | - |
| Spam score check | ✓ | - |
| Blocklist deliverability check | - | - |
| SMS testing | ✓ | - |
| Production sending addon | - | - |
| Ci cd integration | ✓ | - |
| Multi user inboxes | ✓ | - |
| Open source | - | - |

*Source: Vioscale. Generated 2026-09-01T15:05:33.191Z. "-" = undocumented, not absent.*