If I may add, Gmail has removed the feature to send from other email addresses. Or rather, they now require you to have an SMTP server to send from other email

If I may add, Gmail has removed the feature to send from other email addresses. Or rather, they now require you to have an SMTP server to send from other email addresses. Fortunately, the change has not been retroactive, so all my previous addresses were still available, but I couldn't really set up new ones. Which became a deal breaker. That - and the fact that I been looking for something not Gmail for a long time - made me switch to Fastmail. I must say, my experience with Gmail's spam filter has been the reverse. There are a lot of false positives in my Gmail's spam folder. But I am new to Fastmail, so maybe it'll bother me at some point.