Fastmail
Fast, private, ad-free business email with calendars and contacts.
What is Fastmail?
Fastmail is an independent, ad-free email provider offering hosted business and personal email with custom domains, calendars, and contacts. It emphasizes speed, privacy, and open standards like JMAP over data mining.
Best known for: Fast, private, independent business email
Key features
- Ad-free, privacy-focused email
- Custom domain hosting
- Calendars and contacts
- Fast web and mobile apps
- Masked email aliases
- Open JMAP and IMAP standards
Who Fastmail is best for
- Privacy-minded professionals
- Small teams wanting fast, ad-free webmail on their own domain
- Users who value masked-email aliases
Ideal team: Solo users and small teams that want clean, private email without a heavy suite.
Fastmail pricing
Basic
$3/per user / mo (annual)
- No custom domains, which rules it out for most business use
- 6 GB per user (5 GB mail, 1 GB files)
- $4 per user on monthly billing
Standard
$5/per user / mo (annual)
- Custom domains start here, so this is the real business entry point
- 60 GB per user (50 GB mail, 10 GB files), masked email, scheduled send
- $6 per user on monthly billing
Professional
$9/per user / mo (annual)
- 150 GB per user (100 GB mail, 50 GB files)
- Email retention archive for compliance
- $10 per user on monthly billing
Individual
$5/flat / mo (annual)
- One user, 60 GB, custom domains included
- The right plan for a solo operator; Business Standard costs the same but adds nothing you need alone
- $6 on monthly billing
Family
$11/flat / mo (annual)
- Up to 6 users, 60 GB each, shared calendars
- A household plan, not a business one: no admin console or user provisioning
- $14 on monthly billing
Costs to watch before you commit
- Custom domains are unavailable on Basic. Business email effectively starts at Standard, $5 per user annually, and the $3 tier is not a business option
- Advertised rates all assume annual billing; monthly costs about $1 more per user per month on every tier
- There is no free tier at all, only a trial of up to 30 days
- No bundled documents, spreadsheets, or video conferencing, so it replaces the mail half of Google Workspace and not the rest
- Extra storage is sold separately, up to 300 GB per user
Fastmail pros and cons
Pros
- Genuinely the fastest webmail in this category, and the speed is the product rather than a talking point
- Masked email generates a unique address per service, so you can cut off a leaked or sold address without changing your own
- No ad targeting and no message scanning, on a business model that is simply the subscription
- Runs on open standards including JMAP, IMAP, and CalDAV, so your mail is reachable from any client and portable out
- Custom domain handling is unusually good, with per-address routing and catch-all rules that Google and Microsoft make awkward
- Up to 30 days of trial, which is long enough to actually migrate and test rather than glance at it
Cons
- Only 17 reviews in our catalog, which is far too thin a sample to draw any conclusion from
- Custom domains are unavailable on Basic, so the $3 tier is not a business plan despite looking like one
- No documents, spreadsheets, or video conferencing, so it replaces part of Google Workspace and not the whole thing
- There is no free tier, only the trial
- Every advertised rate assumes annual billing; monthly adds about a dollar per user per month
- Basic gives 6 GB per user, which an ordinary year of attachments will fill
Fastmail review: a closer look
Ignore the $3 plan
This is the thing to settle first, and our own listing had it wrong until we checked. Basic at $3 a user does not support custom domains. For a business that is disqualifying on its own, because the entire reason to pay for email is sending from your own domain rather than a generic one. Basic also drops scheduled send and third-party app support, and gives 6 GB per user against Standard's 60. Treat Fastmail's business entry price as $5 a user annually, not $3, and compare it at that number. At $5 it is still cheaper than Google Workspace Business Starter and Microsoft 365 Business Basic, so the conclusion does not change. The figure does.
Masked email is the feature worth switching for
Fastmail generates a unique, disposable address for each service you sign up to, routed to your real mailbox. When one of those companies is breached or sells its list, you see exactly which one leaked because the address is unique to them, and you kill that single address without touching anything else. Apple and Proton offer versions of this and Fastmail's implementation is the most practical, integrating directly with 1Password so the address is created at signup rather than as a separate chore. If you have ever wanted to know which vendor sold your address, this answers it permanently.
What you give up by leaving Google or Microsoft
Fastmail is mail, calendar, and contacts. It is not documents, not spreadsheets, not video calls, not shared drives. If your business runs on Google Docs, moving mail to Fastmail means paying for Fastmail and continuing to pay Google for everything else, which usually costs more rather than less. The switch makes sense when mail is genuinely the thing you use, when the rest of the suite is incidental, or when you have already moved documents somewhere else. Work out what you actually open each week before assuming this is a saving.
About that 17-review sample
We hold 17 reviews for Fastmail, and that is not enough to support any claim about how the product performs at scale. The fair comparison here is not Google Workspace or Microsoft 365. Their counts run into the tens of thousands because those products are handed to entire organizations, so the number measures installed base rather than how many people weighed the decision, and holding any independent provider against it would make all of them look evidence-free. The useful comparison is the other independents in this category: Zoho Mail carries 1,055 reviews in our catalog, Neo 170, Proton 132, Titan 128, with a median of 128 across the fifteen of them. Fastmail sits near the bottom of that group, so the thin sample is a real observation and not an artifact of comparing a small company to a platform. What it means is narrow: Fastmail's reputation rests on a long track record with a technical audience rather than on a large body of business software reviews, so a rating built on 17 responses should carry little weight either way. Judge it on the trial, which is what a 30-day trial is for.
How it compares
Against Google Workspace, Google wins on the surrounding suite and on everyone already knowing how it works; Fastmail wins on speed, on not scanning your mail, and on price. Against Microsoft 365, the same applies with Office in place of Docs. Against Proton Mail, Proton offers end-to-end encryption as its core promise and is the right answer if that is a hard requirement, at the cost of a more constrained experience with standard mail clients. Against Zoho Mail, Zoho is cheaper still, from about $1 a user, and is the better value if budget is the deciding factor and you can accept a busier interface. Against Tuta, that is another encryption-first option with a smaller ecosystem. The honest summary: choose Fastmail when email itself is the thing you care about and you want it fast, private, and on your own domain, and choose a suite when you need the documents and meetings too.
Who should use Fastmail?
A good fit
Fastmail fits solo professionals, consultants, and small teams of roughly 1 to 25 who live in email, want it on their own domain, and do not need documents or video conferencing bundled in. It suits anyone who has grown uncomfortable with their mail provider's advertising model, anyone who wants masked addresses to control what happens to their email address over time, and technical users who value open standards and the ability to leave without a migration project.
Look elsewhere if…
Businesses that run on shared documents, spreadsheets, and meetings should stay with Google Workspace or Microsoft 365, where mail is one component of something you are already paying for. If encryption of message contents is a hard requirement, Proton Mail or Tuta are built around that and Fastmail is not. If the deciding factor is price, Zoho Mail starts around a dollar a user and does the same core job. And nobody should buy the $3 Basic plan for business use, because it cannot send from your own domain.
The verdict
Fastmail is a focused, fast, genuinely private email service that has been quietly good for two decades, and masked email is a better reason to switch than most features in this category. Two things to be honest about before buying. The first is the price: business email starts at $5 a user annually, not the $3 the pricing page leads with, because custom domains are unavailable below Standard. The second is our own evidence: 17 reviews is far too small a sample to tell you anything, and we would rather say so than dress it up. Use the 30-day trial, which is long enough to migrate properly, and judge it on your own mail rather than on anyone's rating, including ours.
Top Fastmail alternatives
Popular Business Email & Productivity Suites tools teams evaluate alongside Fastmail.
SaneBoxAI email management that sorts your inbox and surfaces only what matters.
Thexyz EmailPrivate, ad-free custom-domain email hosting from an independent Canadian provider.
Google WorkspaceGmail, Docs, Meet, and Drive as one cloud-native business suite.
Microsoft 365Outlook, Teams, and the full Office app suite for business.
Tuta MailGreen-hosted, end-to-end encrypted email and calendar for business.