Blessed by the Potato

I’ve been using Thunderbird as my email client for a while now, and it does pretty much everything I could want an email client to do, and does it pretty well at that.

One thing I’ve really wanted is the ability to redo the subject lines of emails other people send me. Is there any email client out there that will let me do that, or an add-on to Thunderbird? I know it’s open source, but I’d hate to have to try to figure out the programming on that myself. Plus, it is a little unkosher to edit emails other people send you, but I have several very good reasons:

1. Our email server appends a {Spam X.X} score to suspected spam, we can then set a threshold for sorting… but that tag still stays there. I’d kind of prefer to remove it on one or two important emails to make them easier to find (my eyes are trained to skip over messages with spam at the beginning).
2. I have about 50 emails from my supervisor with the unhelpful subject line “to do”.
3. I have about 100 emails from my supervisor with the unhelpful subject line “fyi”.
4. I have about 300 emails from my supervisor with the unhelpful subject line “sdarticle.pdf” or “fulltext.pdf” or “Entrez Pubmed”.