I suggest changing the "default notification settings" on officewiki, for new-users and existing-users, so that these types are set to send an email by default (as well as web-notification):
(current config: https://office.wikimedia.org/wiki/Special:DisplayNotificationsConfiguration )
Change 478799 had a related patch set uploaded (by Catrope; owner: Catrope):
[operations/mediawiki-config@master] Enable emails for certain notification types by default on officewiki
Change 478799 had a related patch set uploaded (by Jforrester; owner: Catrope):
[operations/mediawiki-config@master] Enable emails for certain notification types by default on officewiki
Change 478799 merged by jenkins-bot:
[operations/mediawiki-config@master] Enable emails for certain notification types by default on officewiki
Mentioned in SAL (#wikimedia-operations) [2019-09-26T22:15:49Z] <jforrester@deploy1001> Synchronized wmf-config/InitialiseSettings.php: T211620 Enable emails for certain notification types by default on officewiki (duration: 00m 56s)
Now live. @Quiddity, do you want to ping the mailing list in case people want to unsubscribe from the the resultant spam? ;-)