Intercom Emails Not Delivered or Going to Spam

How to fix it

Try these in order — the most common fix is first.

1. 1. Clean your audience

   Copy steps
   1. Aim for a bounce rate between 0% and 3%
   2. Remove inactive contacts and avoid purchased lists; email recently engaged users first
   3. Review links and content
   Did this fix it? Yes No

2. 2. Authenticate your domain

   Copy steps
   1. Add the DKIM and return-path CNAMEs and DMARC TXT record
   2. Send from your own authenticated domain
   3. Check Spamhaus DBL; delist first, then contact Intercom
   Did this fix it? Yes No

3. 3. Check inbound spam

   Copy steps
   1. Open Spam at the bottom left of the Help Desk
   2. Mark genuine messages 'Not Spam'
   3. If Gmail filters upstream, fix forwarding with Google
   Did this fix it? Yes No

4. 4. If restricted

   Copy steps
   1. Reply to the admin notification or message the deliverability team
   2. Describe your opt-in process, inactive-user handling and content changes
   Did this fix it? Yes No

Symptoms

Outbound emails land in spam or are not received; sending may be restricted.

Why it happens

• High bounce rate from old or purchased lists
• Spam trap hits
• Low open rates
• Malicious URLs
• Domain on the Spamhaus Domain Blocklist
• Domain not authenticated
• Inbound mail caught by Intercom spam filter or Gmail

This guide also covers

• intercom emails going to spam
• intercom emails not delivered
• intercom email sending restricted
• intercom bounce rate

The same problem in other apps

All notifications, reminders & messages not sending guides →

• Zendesk Emails Not Creating Tickets (Zendesk)

Other Intercom errors

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• Intercom Messenger 403 Missing or Invalid user_hash
• Intercom Fin Resolution Charges Explained
• How to Turn Off Intercom Fin AI Agent
• Intercom Fin Not Answering Questions
• Intercom Email Domain Authentication Failing (DKIM)
• Intercom Inbox Not Loading or Conversations Missing
• How to Cancel Intercom Subscription