When I remove myself from "Assigned To" ("... placed this task up for grabs") Phabricator tries to send me two mails. One mail gets sent (for what I think is correct), the other mail doesn't. A ./bin/mail show-outbound --id 1234 says:

Message: Message has no valid recipients: all To/Cc are disabled, invalid, or configured not to receive this mail.

[...]

HEADERS
Thread-Topic: T53: Task Description
X-Herald-Rules: none
X-Phabricator-To: <>
X-Phabricator-To: <PHID-USER-dcvzt53lyugukyivjyol>
X-Phabricator-Cc: <PHID-USER-dcvzt53lyugukyivjyol>

I guess it is trying to send to the removed user from "Assigned To". I could reproduce this behaviour on different tasks.

This is definitely minor to me. I was just wondering about the Void messages a ./bin/mail list-outbound gives me and wanted to let you know.