[ambi]

Personally, I haven't found MailTags all that useful in practise. The only thing which, on Tiger, makes Mailtags essential for me is that it gives you URLs to your emails. This is key for me, but I gather Leopard does this now natively. If I had Leopard (soon, my precious, soon ...) I wouldn't bother with Mailtags.

What I do is just use the clipping feature of OF to send my emails to OF and track and process everything there.

If you're a tags kind of person (I'm not) then I guess it might be useful, but I prefer having (many!) links in OF pointing to relevant email.