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Suppression List

  • Oct 29, 2026 7:50 PM UTC
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We have a new collaborator who is not receiving your email confirmation. We suspect it is on your Suppression List, can you please advise how best to fix this issue? 

We have checked all spam filters and confirmed other collaborators are receiving emails correctly.

Best answer by Rona Box

Hi ​@fe7790652, 

Welcome to Box Community, and we’re here to ensure that your collaborator’s correctly receiving Box notifications!

 

Before we check if your collaborator is in suppression list, did the user already check the following?

  • Check your Spam/Junk email folder. Sometimes, certain email clients do not recognize email from box.com. If you find Box messages in your Spam or Junk folder, add noreply@box.com to your email contacts, or Safe senders list. This will allow most mail clients to recognize Box emails and deliver them to your Inbox.
  • Firewall, Content Filter, or Email Security Policy: Check if your firewall or virus scan is blocking the email notifications. Contact your Internet Service Provider (ISP) or Corporate IT department and ask that emails from the following domains be added to the email allow list (safe sender) to ensure that Box messages are not blocked.
    • box.com
    • notify.box.com
    • reply.box.com
    • track.box.com
  • Incorrectly typed email address: Is the sender using your correct email address? Just one mistyped letter will cause an email to go to the wrong address or make it undeliverable. Ask them to double-check that they entered your address correctly.
  • Email on suppression list: If Box notifications ever bounce, emails are automatically added to our suppression list. If the email address(es) is correct and able to receive emails, it can be removed from our suppression list. To do so:
    • Log in to the Admin Console and navigate to the Notifications settings.
    • Remove the affected email address(es) using the Suppression List feature.

      One avoidable reason for getting on the Box suppression list is from creating a new Box account before your actual mailbox or email account is set up.

  • Email scanning issues: If you are experiencing scanning issues, check the HTML code of the templates for any changes and adjust your scripts.
  • Unconfirmed email address: Box does not send most email notifications (with a few exceptions such as password reset and email confirmation messages) to an address that has not been confirmed. If you have not confirmed your email address for your Box account, complete the confirmation step first. After your email address is confirmed, try the action again (for example, folder activity notifications or “Email all” collaborator messages).

If the user has checked and still didn’t get the confirmation email, we advise on having this user to reach out to Box by submitting a support case and work with the Box Product Support team. 

 

Hope it helps!

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1 reply

Rona Box
  • Community Manager
  • Answer
  • Oct 29, 2026 10:06 PM UTC

Hi ​@fe7790652, 

Welcome to Box Community, and we’re here to ensure that your collaborator’s correctly receiving Box notifications!

 

Before we check if your collaborator is in suppression list, did the user already check the following?

  • Check your Spam/Junk email folder. Sometimes, certain email clients do not recognize email from box.com. If you find Box messages in your Spam or Junk folder, add noreply@box.com to your email contacts, or Safe senders list. This will allow most mail clients to recognize Box emails and deliver them to your Inbox.
  • Firewall, Content Filter, or Email Security Policy: Check if your firewall or virus scan is blocking the email notifications. Contact your Internet Service Provider (ISP) or Corporate IT department and ask that emails from the following domains be added to the email allow list (safe sender) to ensure that Box messages are not blocked.
    • box.com
    • notify.box.com
    • reply.box.com
    • track.box.com
  • Incorrectly typed email address: Is the sender using your correct email address? Just one mistyped letter will cause an email to go to the wrong address or make it undeliverable. Ask them to double-check that they entered your address correctly.
  • Email on suppression list: If Box notifications ever bounce, emails are automatically added to our suppression list. If the email address(es) is correct and able to receive emails, it can be removed from our suppression list. To do so:
    • Log in to the Admin Console and navigate to the Notifications settings.
    • Remove the affected email address(es) using the Suppression List feature.

      One avoidable reason for getting on the Box suppression list is from creating a new Box account before your actual mailbox or email account is set up.

  • Email scanning issues: If you are experiencing scanning issues, check the HTML code of the templates for any changes and adjust your scripts.
  • Unconfirmed email address: Box does not send most email notifications (with a few exceptions such as password reset and email confirmation messages) to an address that has not been confirmed. If you have not confirmed your email address for your Box account, complete the confirmation step first. After your email address is confirmed, try the action again (for example, folder activity notifications or “Email all” collaborator messages).

If the user has checked and still didn’t get the confirmation email, we advise on having this user to reach out to Box by submitting a support case and work with the Box Product Support team. 

 

Hope it helps!

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