WHY was Thunderbird 115 called "Supernova?" What caused the press to declare Thunderbird dead back in 2012? And how did we turn the ship around? Ryan Sipes answers these questions and much more in his personal recollection of Thunderbird's history.
It references a sort of partnership with K9 Mail on android, but later says they're looking to expand Thunderbird into the iOS & Android space. Either they'll be direct competitors of each other or they'll start to blend into each other. I'm wondering which.
Previous blogs have mentioned K-9 is just being rebranded as Thunderbird for Android once the Android app is closer in features to the desktop release. The iOS release will be new entirely as I don't know of an existing iOS email app they can rebrand.