There have been multiple accounts created with the sole purpose of posting advertisement posts or replies containing unsolicited advertising.
Accounts which solely post advertisements, or persistently post them may be terminated.
TORFdot0 , 11 months ago I’ll vouch for iCloud+ too, and it does have a catch-all that you can set up
I’ll vouch for iCloud+ too, and it does have a catch-all that you can set up