Between campaigns

Valid last quarter is not Valid forever.

People leave jobs. Domains expire. Catch-alls appear. If you mail the same file on a cadence, the file has to be re-checked on a cadence — not once at import and forgotten.

Scheduled re-verify runs the same SMTP engine on a completed list. Unknown is still refunded. You review the drift — then send.

1. 01

   You mail a cleaned list.

   It was honest on the day you verified it.

2. 02

   Weeks pass.

   Mailboxes disappear. New Invalids show up without a bounce report to warn you.

3. 03

   Schedule re-verification.

   List monitoring runs the same SMTP engine again. Unknown still refunded.

4. 04

   Export the drift.

   New Invalids and Riskys — before they hit the next campaign.

This is scheduled SMTP in your dashboard — not a branded ESP robot we don’t operate.

Why this classification exists · Pricing · Evidence on Trust