[Evolution] Change subject line

[Steven Heimann <steven heimann com au>]

I am using Evolution 2.10.1 on Ubuntu to access a Dovecot powered IMAP
server.

I would love to be able to edit the subject of received emails to make
them easier to identify later.

I have tried looking through the archives but because every archive
message has the word "subject" in it I haven't been able to find
anything useful.

Are there any tools to let me do this.

Thank you and regards
Steven