Reply To: after (.) make blank

Find what: \.(?!(|com))
Change to: .\x20

This part: (|com) works as a so called Alternation. The alternatives are separated by a pipe-symbol “|”. If you need more alternatives, simply add them, like (|com|eu|de)

It’s a difference, if you use a period in the FC or CT field. While it is a metacharacter in the FC field, it is a literal in the CT field. So NO need to escape it.

Kai