We will not use anything else. We have been using fastmail for our company for a long time now. The entire company's email history was imported so now there is close to 300G of emails. Fastmail has proven invaluable because 1. Very good search of large quantities of emails 2. Shared folders allow excellent collaboration 3. Fast 4. Flawless interfacing with thunderbird, outlook, mobile devices 5. Very cool email alias feature 6. Most economical hosting of large quantities of emails 7. SPAM filtering is very good

More than a decade, 0 complaints, perfection. Been a customer for more than a decade, paying customer since 5 years+ (student, so rarely use any premium services). It always works, it's fast, it's not creepy like *mail. There's no service around that has better features than fastmail, and they keep adding good stuff (masked emails). The app is fast, low in resource usage, and just plain reliable. Calendar integration is equally reliable. Support is courteous, fast, and complete (and human). You just can't go wrong with it.

The spam filtering is very poor. The spam filtering is very poor, and they make the most absurd suggestions to try and improve it. They want me to create a folder to mark emails as 'non-spam'. What? If I don't move an email from the inbox to the spam folder, shouldn't that be indication enough that it is NOT spam? Speaking of which, I also receive Fastmail newsletters even though I'm opted out. This makes it spam, doesn't it? I will be moving to another provider.

Very happy with Fastmail I've used Fastmail for about two years, using my own domain there. It has worked perfectly for me. For that reason, I happily can't comment on their responsiveness to service requests. I've also had zero problems with spam. I use the iOS app and my desktop, via Thunderbird. In my opinion, the cost is reasonable for the level of service, and the comfort of not wondering what invisible way the provider is building a dossier on me.

I've used Fastmail for over 3 years I've used Fastmail for over 3 years. It's a fairly good service provider, simple to use and with good options. I only use it as a personal service as for business I'd look elsewhere. Having US servers is a definite no no for a start and being based in Australia, a country known for its terrible privacy laws, is a no go either. Not much they can do about it even if they tried, unless they move out of Australia and base their servers in a better privacy trustworthy country.