MailSlurp provides tools to build, test, and automate email and SMS workflows. Users can create temporary or permanent inboxes and send, receive, and inspect messages through APIs, SDKs, SMTP, IMAP, and webhooks. Its end-to-end tests cover scenarios including OTP, MFA, magic links, and load testing. MailSlurp also offers device previews, email audits, and inbox placement tests across supported clients and providers. Pipelines can route messages and attachments through webhooks, forwarding, and automatic replies. AI extraction turns 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. The service offers a REST API and official SDKs for several programming languages. The free plan includes 500 received emails and 1,000 sandbox sends per month, plus other capped allowances. Starter costs $19.99 per month; custom domains and phone numbers require Pro on Free and Starter plans.
Who it is for
MailSlurp suits developers building or testing email and SMS flows, including automated message tests and inbox workflows. Teams needing custom domains or phone numbers should factor in the plan requirement for Pro on Free and Starter.
What is good
- Supports APIs, SDKs, SMTP, IMAP, and webhooks.
- Tests OTP, MFA, magic links, and load workflows.
- AI extraction can structure email and attachment data as JSON.
- Free plan includes 1,000 sandbox sends per month.
What to know first
- Free and Starter plans cap several usage allowances.
- Custom domains and phone numbers require Pro on Free and Starter.
- Starter costs $19.99 per month.
Verdict
MailSlurp combines programmable inboxes, workflow automation, and email and SMS testing, with extraction and developer integrations. Compare its capped plan allowances with your expected volume before choosing a tier.
MailSlurp plans and pricing
All plansCompared on email testing software
- Free plan
- Yes
- Paid from
- $19.99/mo
- Email clients
- 2 clients
- Device coverage
- both
- Spam checks
- Yes
- Accessibility checks
- Yes
- Link checks
- Yes
- Inbox testing
- Yes
- API access
- Yes
