When a contact's email address is on a blacklist, Remindax flags it with a clearly visible warning and stops sending reminders to that contact. This protects your sending reputation. If you're sure the address is legitimate, contact Remindax support to have it whitelisted — once whitelisted, the contact starts receiving reminders again.

Why a contact gets flagged

A contact is flagged when their email address appears on a blacklist (a deliverability blocklist). Rather than risk sending to a flagged address, Remindax marks the contact with a visible warning and holds reminders to them. This is about email deliverability and reputation, not about the contact confirming their own address.

What to do

  1. Check whether the flagged address is genuinely correct and legitimate (no typo, a real mailbox you expect to reach).
  2. If it's legitimate, contact Remindax support and ask to have the address whitelisted. See How to reach support .
  3. Once support whitelists it, the contact resumes receiving reminders on the normal schedule.

If the address is actually wrong, correct the contact's email instead — see editing a contact.

What happens next

  • While flagged, the contact receives no reminders, and you'll see the warning next to them.
  • After whitelisting, the next scheduled sequence step to that contact will send normally.

Edge cases & gotchas

  • This is not a recipient-side verification step. The contact doesn't need to click a link to "verify" — the resolution is a support whitelist request.
  • A flagged contact silently blocks delivery. If reminders to one specific person aren't arriving, check whether they're flagged before investigating other causes.
  • Different from spam filtering. A flagged/blacklisted contact is blocked at Remindax before sending; a spam-filtered email was sent but got filtered on the recipient's side. See Reminder emails going to spam.

Related questions

  • Why is there a warning on my contact? Their email is on a blacklist, so reminders to them are held.
  • The address is fine — how do I fix it? Contact support to whitelist it; the contact then resumes receiving reminders.
  • Does the contact need to verify their own email? No — resolution is a support whitelist request, not a recipient action.
  • Why isn't one specific person getting reminders? Check whether they're flagged/blacklisted before looking at other causes.

Related articles

Reminder emails going to spam · Notifications didn't send · Error message reference