I found a way to keep using “Sidekick”, the previous name of hubspot, on my Mac Mail still, but something happened yesterday that I can make it to work again, but I had it working since yesterday and until I made some dumb stuff on my MAC…
It would be awesome if more people could join me trying to find the solution for this..
I’m being able to log in, but it is weird.. I followed this tutorial, and adapted to High Sierra..
zakelfassi.com/2015/12/15/fix-sidekick-apple-mail-osx-el-capitain/