Bosman: if a feature works only for 10% (provided 10% are internal and 90% external) of the mails either the feature must be removed or there must be a warning telling the user that such feature only works with internal users. So, technically speaking the 2 Receipts are different. Receipts from internal recipients have one kind of icon, from external they appear as a mail. Sync your Salesforce calendar and contacts seamlessly across devices. Log all customer communication straight to your Salesforce account and. Daneke: even though your answer doesn't provide a solution, it is the best explanation on why this feature doesn't work with external servers. Benefits of email tracking with Salesforce: Integrates directly to Gmail or Outlook Create Salesforce reports to filter data for more insights. At least during these tests using well known destination mail servers. I regularly receive the both Receipts (delivery and read). your suggestions were focused on the fact that the destination mail server doesn't allow Receipts. The conclusion is: even in the best scenario (destination mail server allows Receipts to be sent back to the sending mail server) the Tracking Page only works with internal users.

Dear Contributors, thank you for the support and for taking the time to reply.

Outlook read receipt tracking