There use to be a zaptwo here but the policy has changed...
Here Resides AstalaMail.

AstalaMail.
The, Webmail Client plugin

Aimed at accessing mail provider's native web clients to enable lifecycle support for different providers, in one app with a tailored UI.
Multi Account Support and more. Support planned for ANY account, ANY host/service/app.
(ex: can be used as an anonymous multi-mail client when in combination with guerillamail)

Once destined to be a stock Moonala plugin ,addon, extension, whatever your flavor of the term is :). Its now becoming its own, while retaining full compatibility with Moonala. Allowing those who only need a webmail client to install it alone for less than 1.5MB currently.