I'm sure I entered this in as a bug previously, but cannot find it.

The Enhancement request is as the summary line states. I definitely,
without doubt, need to be able to remove attachments from stored mail
messages. I think it should be on an attachment-by-attachment basis.

Reasoning: Right now, I have only 1790 messages in my inbox. My inbox is at
84 Megabytes. I believe, if I removed all the attachments, my mailbox would
be maybe 6 meg. My point is that the attachments are taking up a large
percentage of my mailbox.

I'm finding that, as this sucker grows in size, you have to keep at least
as much free space around, or some things stop working (like removing a
message or moving a message to another folder), and other things just seem
to work strange at times.

The real shame of it all is that all the big attachments have been already
saved to disk. I'd love to keep the message that held the attachment, as
they are usually very informative.

My proposal: currently, when I right-click on an image, or click on the
arrowhead of an attachment indicator in a message, I get "save" and "open"
alternatives. 

Please, add "Move", and "Delete" alternatives.

If you choose "Move", the attachment data will be "moved" to the
user-defined file. AND the message will then be replaced with a URL
pointing to its current location. I guess it would be cool if a "moved"
image would still display like normal. A "moved" attachment should either
behave like normal (if the URL is valid) or indicate a message showing the
URL and the fact that it can no longer be found.

If you choose "Delete", the attachment will be deleted. Could you replace
the attachment with perhaps a small text attachment indicating the file,
type, name, size, etc. and that it was deleted from the message and at what
time/date? That way, there's a trail indicating that something used to be
there.

This is probably a tall order, but it would definitely be a really NEAT
feature set.