G2

Ruben F.

Small-Business (50 or fewer emp.)

9/7/2026

"Awesome experience using it. Seamless integration with our test framework (playwright)."

5/5

What do you like best about Mailosaur?

What I like best about Mailosaur is how easily it fits into automated E2E testing. In our Playwright suite, we use it to verify magic-link authentication: a login triggers an email, and Mailosaur's REST API lets us search a dedicated inbox by recipient, fetch the message, and extract the sign-in link programmatically — no manual checking, no flaky email-client UI. Overall, it removes most of the pain of testing email-dependent flows without needing a real mailbox or manual verification. Review collected by and hosted on G2.com.

What do you dislike about Mailosaur?

What I dislike most is that there's no push/webhook-based way to wait for an email — we have to poll the search API in a loop with a timeout, which adds latency and a class of flakiness risk to every email-dependent test; on top of that, inbox addresses are locked to the <serverId>.mailosaur.net domain, so we had to build extra logic to filter out real-looking addresses that can't actually receive test mail, and when delivery issues came up, the API/dashboard didn't always make it easy to tell apart "our app is misconfigured" from "Mailosaur rejected the send," which eventually pushed us to write a raw SMTP probe script just to isolate the cause. Review collected by and hosted on G2.com.

What problems is Mailosaur solving and how is that benefiting you?

Mailosaur solves the problem of testing email-dependent flows — specifically magic-link authentication — without a real mailbox or manual verification: our Playwright suite triggers a login, polls a dedicated inbox via Mailosaur's API, extracts the sign-in link, and completes the flow entirely programmatically. That benefits us by making authenticated E2E testing fully automatable in CI, since every test run (and every parallel worker/tier — main, gateway, free) can get its own isolated, disposable inbox instead of contending over a shared real account, which removes a class of flaky, human-in-the-loop steps from our pipeline and lets sign-in be tested exactly like any other automated step. Review collected by and hosted on G2.com.