Install grepmail by entering the following commands in the terminal:
sudo apt update sudo apt install grepmail
Description:
search mailboxes for mail matching an expression
Grepmail looks for mail messages containing a pattern, and prints the resulting messages. Usage is very similar to grep. It can handle compressed mailbox files, and can search the header or body of emails. It also supports searches constrained by date and size.
Homepage: https://github.com/coppit/grepmail
Version: 5.3033-8
Section: universe/mail