Mailosaur vs MailSlurp
Mailosaur
mailosaur.com
MailSlurp
mailslurp.comSide by side
| Figure | Mailosaur | MailSlurp |
|---|---|---|
| Price from | $20/mo | $19.99/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 3 | 9 |
| Spec score · Email Testing Software | 7.9 (#14) | 8.9 (#5) |
| Compliance | Mailosaur states that it is ISO 27001:2022 certified and PCI DSS compliant, and adheres to GDPR, the Data Protection Act, and CCPA. | MailSlurp states GDPR compliance, AWS data-center ISO 27001 and SOC 2 standards, PCI DSS payment handling through Stripe, OWASP practices and NIST framework alignment. |
| Headquarters | The Square, Basing View, Basingstoke, Hampshire RG21 4EB, United Kingdom | Saue, Harjumaa, Estonia |
| Integrations | Mailosaur lists integrations and guides for frameworks and tools including Cypress, Playwright, Selenium, Cucumber, Robot Framework, Postman, Insomnia, WebdriverIO, TestCafe, PowerShell, and Ghost Inspector. | The integrations directory lists 79 items, including SDKs, Playwright, Cypress, Selenium, BrowserStack, Zapier, Power Automate, UiPath, Postman, GraphQL and webhooks. |
| Product | Mailosaur captures email and SMS messages and lets teams test them through its web dashboard and testing API. | MailSlurp provides tools to build, test, and automate email and SMS workflows. |
| Support | The Enterprise plan includes advanced support and SLAs, an account manager, and support for custom terms. | The support page offers guides and direct contact for account, billing, delivery, and technical issues. |
Plans
MailSlurp
- FreeFree
- FreeFree
- Starter$19.99 a month
- Starter$19.99 a month
- Pro$49.99 a month
- Pro$49.99 a month
- Growth$129.99 a month
- Growth$129.99 a month
- EnterprisePriced on request
In their own words
MailSlurp
MailSlurp provides tools to build, test, and automate email and SMS workflows. Users can create temporary or permanent inboxes and handle messages through APIs, SDKs, SMTP, IMAP, and webhooks. It supports end-to-end tests for scenarios including OTP, MFA, magic links, and load testing, as well as device previews, email audits, and inbox placement checks. Pipelines can route messages and attachments using webhooks, forwarding, and automatic replies. AI extraction can turn emails and attachments such as PDFs and images into structured JSON using prompts, schemas, and OCR. Listed integrations include Playwright, Cypress, Selenium, HubSpot, Braze, Mailchimp, Zapier, and AI assistants through MCP. A REST API and official SDKs cover several programming languages. The free plan has capped allowances, including 500 received emails and 1,000 sandbox sends per month. Starter costs $19.99/mo; custom domains and phone numbers require Pro on Free and Starter plans. MailSlurp is web- and API-accessible.