Seth's co$-$worker explained that emails were used instead of letters when responding to

complaints. She explained that Seth should use the same content as a letter would use and that

there are no other changes. Should Seth follow this advice?

All of the advice is correct.

Almost. Seth should take extra care with the subject line.

No$,$ an email will be much shorter so is written in a different style.

No$,$ am email should contain more details than a letter.