> Do note that Thunderbird can afford to keep a relatively tiny team (compared to Firefox) because it stands on the shoulder of giants (Firefox) for its UI and

> Do note that Thunderbird can afford to keep a relatively tiny team (compared to Firefox) because it stands on the shoulder of giants (Firefox) for its UI and HTML renderer. Also, and mainly, because that's a lot less of a moving target. - there's not much that's new to email, there are some recent ideas like jmap but they're not exactly hard requirements - UI requirements are largely fixed and a pretty minor concern - and between web clients and completely broken ones (cough cough outlook) email HTML rendering is pretty damn far from any sort of leading edge