OK, elm and eml are both things in the world of email. Elm is an old unix/linux based email client, the type of program that power users might have been using to read their email at University on old vt100 terminals back in the day. My response was alternatives to that program called elm. Yes, it makes more sense now that the OP was talking about EML format email exports and not ELM the unix email client. I expect that eml format exports, along with other standard formats such as mbox will continue to be supported for many years.