Allegrow's API and application will provide statuses as a result of email verification for each email address you provide to us.
Here's a short summary of how you can consider each status:
'block_bounce_risk' = invalid
'dead_email' = invalid (often won't bounce even though it's incorrect, typically due to a server catch-all set-up).
'do_not_mail_abuse' = valid (with higher spam report risk)
'unknown' = inconclusive (re-run after 30 days).
'spamtrap' = valid (but high spam trap risk).
'safe' = valid (safe to send to / provide customers, both catch-alls and non-catch-alls included).
You can find further guidance on how we suggest using each status in your GTM process or application here.