After seeing that T7731 had landed, I was hopeful that I could set my email settings for Differential to "Notify" and then set up a Herald rule to email me only about updates to revisions for which I was specifically listed as a reviewer. (This seemed like it might be a possible alternative to T9535.)
To that end, I switched all of my Differential email preferences to Notify and created a personal Herald rule for Differential revisions that would fire if I was in the list of reviewers and that had an action to send me an email.
Using the test console, I verified that the rule would match as expected on a particular revision that had me as an explicit reviewer. Then, I added a comment to that revision. Since I configured my email preferences to notify on self-actions, I expected that the Herald rule would trigger and I would get an email.
After checking /mail/, however, I saw that the delivery of the message was voided to due Mail Tags: "This mail has tags which control which users receive it, and this recipient has not elected to receive mail with any of the tags on this message (Settings > Email Preferences)."
Based on T7731, I would have expected my Herald rule to punch through the mail tags for this message to make sure that it was delivered, but I might be misunderstanding (or T7731 might have been reverted).
