Another vote for Fastmail here. They do IMAP right, so you can use just about any third party client without gaps in functionality or odd quirks (unlike gmail),

Another vote for Fastmail here. They do IMAP right, so you can use just about any third party client without gaps in functionality or odd quirks (unlike gmail), and their webmail is light and snappy. They're also behind JMAP[1], which I think has a fair shot at eventually replacing IMAP. [1] https://jmap.io/ https://jmap.io/