Normally, I wouldn’t add to things like this, but I absolutely love Mailspring. I believe in the product and am totally willing to pay for the pro features. The issues I have haven’t been resolved, nothing has been addressed and that makes me incredibly hesitant about paying for the pro features.
I agree with others that you really should look at crowd sourcing yourself for a year’s worth of updates and work and focus on this. I completely understand that this is a side-project, but you are offering people a subscription and failing to deliver on that.
So, please, make a decision and at the very least post an update about what is going on? From what I can see, this looks dead in the water, because no one has even posted anything from Mailspring since last year. Granted, that may only be 3 months, but the very least you could do is update the community to let us know what’s going on, what your plans are, and if you’re not going to make an effort to update, then the least you could do is warn people so they don’t pay for pro features and get a pile of junk.
I would be more than happy to donate to the Mailspring team IF we could get assurances that you’re actually addressing the issues and working to make this better. Please, just do something to let us know you’re even alive!