Get e-mail addresses from Gmail messages received

Question

How can I export a list containing e-mail addresses for everyone that has sent me an e-mail? I have all of the messages archived.

Answer 1

The only way to do this is

1. Export all as .txt (see: Export Gmail messages to text or HTML files)
2. Loop through all of it and grep "From: " lines in a seperate database.

Note: if you use imapsize (free) for step 1 then save the backups as "%FROM - The sender of the email" and you have them in plain sight in your directory.