@luc0x61 Thank you so much for being a user and donor, and hopefully we can reassure you a bit! Any smart features that might go into Thunderbird in the future will be completely opt-in (and will likely be add-ons). We know some users want these features, but others don't, and it's important you get them only after clearly opting in to them. We always want our users to feel in control to make Thunderbird how they want it to be.