...
There should be a scheduled job called Send Emails or Email Queue Sender. In that Job, add Action Print Processor before the Email Queue Sender and if selected, one of the profile actions assigned must be Print Processor
...
Set the link expiration duration
The approval link only stays active for a restricted time. Once it expires an approval must log into the application to approve. To set the expiration duration.
From the Admin menu expand the Options -->T&E Options menu item
Select Module Enable
Select the “Expire Approval by email link (Default 1440 Minutes)” and update the value
Make sure save the changes
Optional: If you would like the update the message that goes along with the email notification, those can be updated under Admin → Options → Email Message Settings → Time or Expense Email Messages
Select “Approve/reject expense report from email option and update the subject and the announcement part of the setting. Click “Save” to save the changes:
...