The demise of Thunderbird does not mean anything to Seamonkey, but the deprecation of XUL will make it hard to continue to develop it since the whole user inter

The demise of Thunderbird does not mean anything to Seamonkey, but the deprecation of XUL will make it hard to continue to develop it since the whole user interface is based on XUL. The only viable option would be to pick up maintenance for the XUL-supporting Gecko engine.