By chance I happened across an interesting "facility" for Gmail
accounts, which may be of interest to users who feel the need to prune
their e-mail accounts.
FindBigMail (
http://findbigmail.com/ ) scans your All Mail and creates
4 new labels which it can then apply "Top20", ">2mb", ">500kb" and
">100kb" to the relevant e-mails.
You're never asked for your password (they use OAuth and get a token
from Google for temporary access) and they never log your e-mail
address, but use a hash thereof in their logs. [For those who are
concerned about any retention, you can verify that they've removed the
token at
https://www.google.com/accounts/IssuedAuthSubTokens.]
It does't allow or facilitate the removal of attachments, but it
enables an account holder to identify those messages which are the
heavyweights in the mailbox!!
Although it's currently a "free" service, they are looking for a small
PayPal donation - which is fair given that the function works
remarkably well, and that they are still developing it!!
Now if only Google provided this service ...