Thanks for the help! Under My Profile Settings/From Email, this is the situation:
My account shows:
EMAILS SENT FROM soberg@myrealcompany.com… CREATE TASKS & CONVERSATIONS IN Myrealcompany (i.e. the name of the organization) and I CAN create tasks by sending email
Other coworkers’ accounts show:
EMAILS SENT FROM othercoworker@myrealcompany.com… CREATE TASKS & CONVERSATIONS IN Myrealcompany (identical to mine) and they CANNOT create tasks by sending email; they get “We couldn’t process your email…”