[kybernetyk]

/edit: Typical case of "just read the headline and replied". Sorry for telling you about Fastmail while you ruled it out.

I'm currently using Fastmail [0]. No issues so far (5 months in).

Switched initially because they support push on the native iPhone mail app while Google forces you to use their Gmail app if you want push. (Even if you have paid for Gmail for business service).

I'm using FM with my own domain. Setup was trivial. There's also a lot of material on the web about setting up fastmail with different software packages. (My MBP's postfix uses my fm account to send out cronjob messages).

Can't say anything about their webmail because I never really used any webmail front end. But from the little contact I had with FM's webmail frontend it looked tidy and was responsive.

[0] https://www.fastmail.com