MailSift is now open for early users. It verifies individual email addresses or bulk CSV lists using syntax, DNS/MX, disposable and role-address detection, catch-all signals, SPF/DMARC, and optional SMTP checks.
I built it because many validators turn ambiguous mail-server responses into confident-looking “valid” results. MailSift keeps those cases as “unknown” and shows the signals behind a 0–100 trust score.
I’m looking for early feedback from developers or teams working with permission-based email lists. In particular: are the Fast and Deep modes easy to distinguish, and is the explanation useful when an address is risky?
You can try it with 500 starting verification credits: https://mailsift.dev
I’m the builder, and candid feedback is welcome.
Source: r/earlyorbeta · by /u/AIPnely