Answers.Body: <p>Under administer - civimail - civimail component settings there is an option for &quot;Enable CiviMail to generate Message-ID header&quot;</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-11-18T00:10:38.913Z
Answers.Text: thanks - it worked!
Answers.UserDisplayName: flantascience
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-11-12T23:35:39.397Z
Answers.LastActivityDate: 2021-11-12T23:35:39.397Z
Answers.UserDisplayName: Demerit
Body: <p>I'm testing our emails with Mail-Tester.com and it's showing that when sending individual email messages to Contacts, the emails are missing a &quot;Message-Id: header&quot;.</p>
  <p>How can I change this?  It doesn't appear to happen when sending bulk email, just individual emails.</p>
  
Tags: <civimail><email>
Title: Individual Emails missing "Message-Id: header"
ThreadText: # Individual Emails missing "Message-Id: header"
  
  (Asked by: username_0 on 2021-11-12)
  
  I'm testing our emails with Mail-Tester.com and it's showing that when sending individual email messages to Contacts, the emails are missing a "Message-Id: header".
  
  How can I change this? It doesn't appear to happen when sending bulk email, just individual emails.
  
  **Tags:** civimail, email
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-11-12. Score: 2 | Accepted answer
  
  Under administer - civimail - civimail component settings there is an option for "Enable CiviMail to generate Message-ID header"
  
  > **Comments:**
  > **username_0**: thanks - it worked!  
  
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