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Email compliance: unsubscribes, bounces, and the suppression list

Omnifox keeps an Email suppression list that blocks sending to addresses that unsubscribed, bounced, or were marked as spam.

Jul 11, 2026

To protect your sending domain's reputation and follow good email practices, Omnifox automatically maintains a suppression list per workspace: any address on it stops receiving emails from the channel, even if an agent tries to reply to it.

What adds an address to the list

  • Hard bounce — the address doesn't exist or the domain rejects the email.
  • Complaint / marked as spam — the recipient reported the email as unwanted.
  • Unsubscribe — the recipient used the unsubscribe link included in the email.
  • Manual block — an agent or admin added it by hand from Omnifox.

How they get added

  • Bounces and complaints arrive automatically from the sending provider (AWS SES) via notification, with no human involvement.
  • Unsubscribes are processed through the unsubscribe link in the footer of outgoing emails.
  • Manual blocks are done by an agent from the conversation or contact page.

Example

If a customer clicks "Unsubscribe" at the bottom of an Omnifox email, their address is added to that workspace's suppression list immediately: no agent will be able to send them another email from that channel until it's manually removed from the list.

Tips

  • A suppressed address can be manually reactivated if the block was a mistake or the customer asks to receive emails again — do so with judgment.
  • Keep your contact lists clean to minimize hard bounces, which hurt your domain's reputation.

Troubleshooting

If an agent tries to reply to a contact and the send gets rejected, check whether that address is on the workspace's suppression list — the system won't let the send through even if the agent retries.

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