A domain account since the 90s gets only 3-5 spam emails a week in Fastmail versus dozens per day on Gmail.
95signal
236reviewsi
A score out of 100. Negative and mixed reviews take points off, and so does having only a few reviews, so a handful of glowing reviews can’t beat a product many people like.
88% Positive8%
Easy migration from Gmail or Google Workspace and human support, though the calendar feels clunky.
What customers love, and what they don’tWhat customers noticed
Customer reviews (236)
Add your reviewShowing 20 reviews mentioning good deliverability Show all
Moved from Google to Fastmail months ago; mail transfer and service is amazing and spam filtering is better than most.
Finds Fastmail spam filtering very good after training, push works well on Apple Mail, and has no regrets.
Switched from iCloud to Fastmail with their own domain after iCloud sent a correspondent's replies to spam.
Returned to Fastmail after two years on Proton, which had reliability and deliverability issues.
After migrating from Gmail, spam dropped from a couple a day to a couple a week on Fastmail.
A new Fastmail account signed up for today sends everything to recipients' spam folders.
Home Depot rejects fastmail.com addresses when registering or changing an account email, and Fastmail support could not get it unblocked.
After 15 years, started getting 5 to 15 spam emails a day in the inbox for the past couple of months.
Twenty years on Fastmail with a widely exposed address and barely any spam reaching the inbox.
Lately lots of AI-generated spam gets through Fastmail even after marking it as spam repeatedly.
All legitimate email went to spam until support reset the learned spam, causing missed important mail.
A venue rejected all their cards because of a Fastmail email address, even for a phone order.
Chose Fastmail after trying five providers: top-class search and spam filtering, cheaper than Google Workspace.
Switched business email because the previous host had blacklisted IPs; Fastmail has good sender IPs and migration was quick.
Uses Fastmail for its features and because other providers accept its mail with less bounce back.
Finds Fastmail sorts spam and legitimate mail correctly, with false classifications very rare.
Uses Fastmail aliases and folders for spam control to see which sites sell their email.
Uses Fastmail with a custom domain for registrations but Gmail when sending since they trust the Gmail domain more.
Seven domains with catch-alls on Fastmail yield only 3-4 spam emails a week.
Common questions about Fastmail
What do customers say about Fastmail?
Customers consistently describe it as reliable, fast and easy to use, with simple migration from Gmail or Google Workspace and strong spam filtering. Many have used it for a decade or more and say support is human and helpful. Minor complaints include a clunky calendar and limited calendar sharing outside Fastmail.
Is Fastmail worth it?
Of the 200 reviews with a clear verdict, 88% are positive, 8% mixed and 5% negative. The praise mentioned most is reliable. The most common complaint is email delivery problems.
What do people like about Fastmail?
The praise reviewers mention most: reliable (59 reviews), easy to use (45 reviews) and easy migration (23 reviews). For example: Finds Fastmail's organisation far easier than Proton for a real inbox, and less buggy with a rock-solid app.
What are the most common complaints about Fastmail?
The complaints reviewers mention most: email delivery problems (1 review), poor support (1 review) and renewal price hike (1 review). For example: Opened tickets about mail providers not receiving their custom domain emails and a billing issue; nine days later neither was resolved, and authenticated mail was still landing in spam.
What does the signal score of 95 mean?
It's how well reviewed Fastmail is, out of 100. Negative and mixed reviews take points off, and so does having only a few reviews: a service needs plenty of them, compared with the most-reviewed services here, to reach the high 80s and 90s. It's worked out from reviews only, needs at least 5 of them, and updates as new ones come in.
What are the specs of Fastmail?
Category: Email hosting. Free plan: No.
How does Fastmail rank?
#1 in Best Email Hosting 2026, ranked by real customer reviews.
Where do these Fastmail reviews come from?
236 are quotes from Reddit and YouTube, each linked to the original. Customer reviews are checked for spam before they appear. Every review, written here or quoted, is read as positive, mixed or negative.