I used to use it before renaming it, when it was free without the extra features which I don't care for. Then they added a horrible orange banner telling you to upgrade to the paid functions which most didn't care about. Finally they closed down all free apps and only allowed you to buy it in a subscription plan. After that I forgot about them until I saw them here today.
- Didn't like how they handled an issue I raised, very rude. - Didn't like how they closed down at such short notice - Rather annoyed after spending ages looking for a new email client that they came back so soon.
There is no competitor that matches the overall UI/UX and features. 2nd best would be polymail - but with a huge distance.
I used it when it called CloudMagic until they decided to change their strategy. They forced users aggressively to switch to Newton's paid plan.