I have loved Thunderbird for many years - for several reasons -
familiarity (understand comments about new innovation)
and overwhelmingly - the add ons (by far the best productivity for me is QuickText -http://extensions.hesslow.se/extension/4/Quicktext/ - a huge time-saver.
If TB does flounder - I will go with what ever client gets a port of QuickText)
I bet most that are worried are expressing a potential personal loss - and would like to say to Mozilla - thankyou for the years you have provided a free and awesome product to me.
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