> splain
Possible unintended interpolation of @gmail in string at ./Emailtest_backup_2.pl line 24.

Possible unintended interpolation of @gmail in string at
        ./Emailtest_backup_2.pl line 24 (#1)
    (W ambiguous) You said something like `@foo' in a double-quoted string
    but there was no array @foo in scope at the time. If you wanted a
    literal @foo, then write it as \@foo; otherwise find out what happened
    to the array you apparently lost track of.