Trimming Text based on character count

[Dmiller35]

I have a document that has a limited amount of space and one of the fields is an email address. I can do a copyfit, but in order to keep everything on one line, the font has to go from 9pt down to 5 on some records. (The client's domain name is stupidly long).

Is there a way to splt the email at the "@" so that when it's longer that 32 characters, it drops the "@unecessarilylongdomain.com" down to a second line?
Every record has the same domain name so is there a way to trim the right 25 characters?

This way jonathan.doe@unecessarilylongdomain.com would become
jonathan.doe
@unecessarilylongdomain.com