How can you ensure an email newsletter about sales from an external company is delivered without being blocked by spamBlocker?

Adding a spamBlocker exception based on the From field of the newsletter email ensures that messages from this specific external source are recognized as legitimate and not treated as spam. This proactive measure allows the email to bypass the spam filtering mechanism that would typically evaluate messages for potential spam characteristics. By specifying the From field, you are telling the spamBlocker to trust emails from that particular sender, effectively preventing unnecessary blocking or filtering.

In contrast, setting the spamBlocker action to quarantine the email introduces delays in accessing the newsletter since it would be held for later examination. Adding a subject tag for bulk messages does not address the source of the email and might still lead to misidentification as spam. Setting the virus outbreak detection action to allow emails from the newsletter source could enhance security, but it doesn’t ensure that the email will not be flagged by spam filters, as virus detection and spam filtering are separate functions. Therefore, the best approach to ensure delivery without interference from spamBlocker is to create an exception based on the sender's email address.