Changed email servers. Can't find old messages. What is file extension for EM client messages?

What is file extension for EM client messages?

Hello, we use the standard .eml (email message) file format when exporting and importing email messages, if a message is received and used by eM Client however the application saves the message into the database files for use with eM Client, in order to access the message in an .eml format, you’d have to export them.

Regards,