Answers.Body: <p>I found it myself:</p>
  <p>/civicrm/admin/setting/misc?reset=1</p>
  <p>Default setting is 7 days.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-18T17:03:39.533Z
Answers.Text: To answer your follow-up - yes, you can send multiple emails with the same checksum, but the clock starts ticking when the checksum is first generated.
Answers.UserDisplayName: Jon G - Megaphone Tech
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-18T18:09:57.880Z
Answers.Text: so in that sense it isn't the 'same' checksum, it is just 'a' checksum token.
Answers.UserDisplayName: petednz - fuzion
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-12-18T12:19:03.687Z
Answers.LastActivityDate: 2020-12-18T12:19:03.687Z
Answers.UserDisplayName: Flying
Body: <p>How long is a URL-link using a checksum token from CiviCRM valid?</p>
  <p>And can you send multiple emails using same token?</p>
  <p>When does the expiration clock start ticking?</p>
  
Tags: <tokens><checksum>
Title: Checksum expiration
ThreadText: # Checksum expiration
  
  (Asked by: username_0 on 2020-12-18)
  
  How long is a URL-link using a checksum token from CiviCRM valid?
  
  And can you send multiple emails using same token?
  
  When does the expiration clock start ticking?
  
  **Tags:** tokens, checksum
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_0 on 2020-12-18. Score: 5 | Accepted answer
  
  I found it myself:
  
  /civicrm/admin/setting/misc?reset=1
  
  Default setting is 7 days.
  
  > **Comments:**
  > **username_1**: To answer your follow-up - yes, you can send multiple emails with the same checksum, but the clock starts ticking when the checksum is first generated.  
  > **username_2**: so in that sense it isn't the 'same' checksum, it is just 'a' checksum token.  
  
  ---
  
  