POP Peeper FAQ
Can I transfer messages from POP Peeper to my email client?
POP Peeper does not currently provide a means to directly transfer your email from POP Peeper to your email client. You can save messages in the standard .eml format by selecting "Save message as" under the "File" menu when viewing a message. Most email clients will let you open this type of file, and some may let you transfer the file into the client.