Rmail tips

[Ben Hancock]

Hi Emacs users,

I recently started using Rmail for handling my email and am enjoying
it. I've familiarized myself with the manual but was wondering if any
long-time users have any tips to share. 

For example, one tip I came across was to use a macro when writing out
(with "o") mails to another file multiple times. It seemed obvious once
I did it, but it was helpful all the same.

Are there any other tricks, workflows, or idioms that folks would
suggest for working with Rmail efficiently?

Thanks,

Ben