I use Mail on macOS, but occasionally the Fastmail web app in a browser. Here are a bunch of things I use the web app for besides configuration stuff: - Block

I use Mail on macOS, but occasionally the Fastmail web app in a browser. Here are a bunch of things I use the web app for besides configuration stuff: - Block sender (whole domain) - Report phishing - Mark as spam Because that stuff should be done on the server, not on the client and if you mark stuff as spam in Mail, it's on the client afaik.