Thanks for everyone's posts. I really appreciate it. Chris's code has not worked for me though, this is the output:

someone@mail.com[1]
{2..2}: syntax error: operand expected (error token is "{2..2}") #maybe because I only have two email address in the file. It is possible that the file only contents 1 or 2 email addresses.

Zaxxon's code worked for me. Thanks again for all the inputs.