MailSink blog. Email testing, AI agents, MCP, and developer tools.https://mailsink.dev/en-ushttps://mailsink.dev/blog/mailsink-vs-agentmail/https://mailsink.dev/blog/mailsink-vs-agentmail/Both give AI agents email. AgentMail inboxes stick around. MailSink inboxes auto-expire. Which model fits your agent workflow? Side-by-side on identity, MCP, pricing, and use cases. Updated May 2026.Sat, 16 May 2026 00:00:00 GMThttps://mailsink.dev/blog/mailsink-vs-throwawaymail/https://mailsink.dev/blog/mailsink-vs-throwawaymail/Both serve disposable email for AI agents. ThrowawayMail is zero-friction with no auth. MailSink trades a signup for longer TTL, persistence, and per-account quotas. Pick by your workflow shape.Sat, 16 May 2026 00:00:00 GMThttps://mailsink.dev/blog/mailsink-vs-mailosaur/https://mailsink.dev/blog/mailsink-vs-mailosaur/Mailosaur builds an enterprise QA suite with SMS testing and real-device email previews. MailSink is a REST-first temp email API with a free 50 inboxes/month tier and an MCP server. Compared on pricing, features, and fit.Fri, 15 May 2026 00:00:00 GMThttps://mailsink.dev/blog/claude-code-receive-email/https://mailsink.dev/blog/claude-code-receive-email/Wire MailSink's MCP server into Claude Code so the agent provisions inboxes, waits for verification mail, and pulls the OTP - without IMAP polling or Gmail OAuth. Full setup in 4 minutes.Fri, 01 May 2026 00:00:00 GMThttps://mailsink.dev/blog/test-email-verification-cypress/https://mailsink.dev/blog/test-email-verification-cypress/Stop stubbing signup flows. Provision a real inbox in a Cypress command, wait for the verification code, assert, tear down. Full cypress/commands.ts + example test.Thu, 30 Apr 2026 00:00:00 GMThttps://mailsink.dev/blog/verify-otp-playwright-without-regex/https://mailsink.dev/blog/verify-otp-playwright-without-regex/Sign up, wait for the email, grab the OTP in three API calls inside your Playwright test. No regex parsing, no Gmail IMAP, no page-polling hacks. Full fixture + CI pattern.Wed, 29 Apr 2026 00:00:00 GMThttps://mailsink.dev/blog/mailsink-vs-mailslurp/https://mailsink.dev/blog/mailsink-vs-mailslurp/Both provision real disposable inboxes for QA and agents. MailSink costs less and ships an MCP server. MailSlurp has bring-your-own-domain today. Side by side.Tue, 28 Apr 2026 00:00:00 GMThttps://mailsink.dev/blog/test-stripe-checkout-email-verification/https://mailsink.dev/blog/test-stripe-checkout-email-verification/End-to-end Stripe Checkout testing in CI: provision a real disposable inbox, complete payment, wait for the receipt + verification email, assert. Full Playwright + Stripe test mode setup.Mon, 27 Apr 2026 00:00:00 GMThttps://mailsink.dev/blog/mailsink-vs-mailtrap/https://mailsink.dev/blog/mailsink-vs-mailtrap/Mailtrap sandboxes outbound email for dev. MailSink provisions real throwaway inboxes for tests and AI agents. Side by side on API, pricing, TTL, CI fit, and MCP.Tue, 21 Apr 2026 00:00:00 GMThttps://mailsink.dev/blog/mcp-email-server-for-agents/https://mailsink.dev/blog/mcp-email-server-for-agents/Give your AI agent a real temp inbox. MailSink's MCP server provisions disposable emails, catches OTPs, and returns content in two tool calls. No SDK, no IMAP.Tue, 21 Apr 2026 00:00:00 GMT