Nokia Messaging represents Espoo's premiere email experience -- so premiere, in fact, that the company eventually plans to charge for it on some of its devices -- and to help makes it just a little bit more awesome than it already is, they've now started adding in instant messaging capability. The new Nokia Messaging - E75 IM Beta (yes, that's the full official name) offered by Nokia Beta Labs rocks compatibility with Yahoo Messenger and Ovi -- more services are expected to be compatible in the future -- and appears to serve up pretty much all the features you'd expect of a modern mobile IM client, including background notification, multiple conversation management, status control, and chat log save capability. So far, only the E75's compatible, but Nokia's imploring folks to stay tuned to Beta Labs for updates on when they'll open it up to other devices.