I am not guiltless of typos and spelling mistakes but just now we seem to have an outburst of "myselfitis" at work (solicitors)
Every new instruction is confirmed with a note to the client saying "if you have any question please contact myself".
To me, it needs correcting. It reduces our credibility AIBU? I always stop the trainees/paralegals from using it (simply pointing out that they will never read any judge using it in a judgment seems to cure them) but this is our adminstrator/client care team.
I have been told off before about my insistence on addressing clients as "Dear X" rather than "Hi X". That's my reason to hesitate.