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Why Is My Email Suppressed?

Learn why email notifications fail to deliver and how to clear your suppressed status.

If you received a notification that email delivery failed, your email address has been added to our temporary suppression list to comply with anti-spam regulations.

This issue is usually caused by your email provider or local settings rather than the SpacetoCo platform. If you use a work or corporate email address, you may need to forward this article and the provided error message to your IT department.

Common Causes of Email Suppression

  • Temporary server outages: Your email provider's servers were temporarily offline.
  • Mailbox quota exceeded: Your inbox is full and cannot accept new messages.
  • Email misconfigurations: Misconfigured forwarding rules or inactive alias addresses (such as a former staff member's email) blocked incoming mail.
  • Spam filters: Your provider or email software flagged SpacetoCo messages as spam.
  • Email bouncing: Repeated delivery errors caused automatic suppression.
  • Domain or IP blocking: Your provider or security firewall blocked SpacetoCo domains or IP addresses.

How to Resolve the Issue

  1. Check your mailbox status: Confirm your inbox is active, has storage space available, and is receiving other emails.
  2. Review your spam folder: Check your junk or spam folder for SpacetoCo messages and mark them as "Not Spam".
  3. Whitelist SpacetoCo domains: Add SpacetoCo to your safe sender list so messages are not blocked.
  4. Clear your suppressed status: Click Unsuppress in your dashboard notification to remove your email address from the suppression list. This takes effect immediately.
  5. Check corporate firewall settings: If using an organisation account, ask your IT department to review firewall and domain rules.

Technical Sending Details

Your IT department may require these sending details to allow SpacetoCo emails through your network:

  • Staff and support domain: spacetoco.com (IP ranges are dynamic)

  • Automated system notifications domain: mg.spacetoco.com 

  • Sending IP address: 143.55.226.51

 

If the Issue Persists

  • Allow up to 24 hours: If an unsuppressed email fails delivery again, it may take up to 24 hours for the updated status to show in your dashboard.
  • Update your email address: If your current email address continues to bounce, learn how to update or change your email 

 

Viewing Missed Notifications

SpacetoCo cannot automatically resend all failed notifications at once, as sending multiple bulk emails violates anti-spam rules.

You can view generated notifications in your dashboard activity feed for each booking or application. You can also resend individual notifications from the activity feed preview.

If you need further help clearing your email suppression, contact support via email at info@spacetoco.com.