Fastmail for your business email

Which Fastmail plan fits?

Prices below are per paid user. An address or alias is not automatically another paid person’s mailbox.

US public prices, taxes excluded. Annual billing is paid upfront. Future renewal prices can change. No discount is included in these figures. Each button opens the same issued Fastmail destination; it does not preselect a tier.

A professional address without a website move

An email address on your own domain gives customers a consistent place to contact you. The useful part is control: you can keep the domain and website you already have while choosing the service that handles your mailbox.

Fastmail is worth considering when email, contacts and calendars are the job. Start with Standard if you need a standalone custom-domain mailbox and a third-party email app. Consider Professional for its greater storage or configured retention archive. Basic has a different role, particularly in mixed accounts; it is not a cheaper independent substitute for Standard’s domain and app features.

This guide uses official documentation rather than a paid-service test. The plan choice is based on the work described, not a measured performance score.

Build the right mailbox setup

One person, several useful addresses

Write down who needs a private mailbox before counting addresses. A solo business may want a public contact address, a billing address and a personal address, all handled by the same person. That is a different requirement from three people who each need independent sign-in, private mail and their own recovery settings.

Map each address to the person responsible for it. Then check the provider’s supported alias or shared-address arrangement before buying another paid user. Never assume that three addresses necessarily mean three paid mailboxes, or that an alias creates an independent user account.

Use the mail app you already know

If your workflow depends on an external email app, make that a requirement before choosing the cheapest tier. Standard and Professional support third-party mail apps; Basic does not. Check the official setup instructions for your app and the account security settings it needs.

During the trial, test sending and receiving, folders, search, contacts and calendar events on the devices you actually use. A feature checklist is a useful starting point, but it cannot tell you whether the daily workflow feels right for you.

Choose storage for the mailbox you have

Look at your current mailbox usage and the files you intend to keep. If you are near a limit, decide whether to remove old material or buy more capacity. Avoid choosing a higher plan only because its storage figure is larger; identify the messages or retention requirement that justify it.

Professional’s retention archive is administrator-managed and needs configuration. It records new messages after activation; it is not a way to recover messages from before it was enabled, and it does not automatically satisfy every legal retention obligation.

Read the price as a commitment

In the US public reference checked on 16 October 2026, one Standard user costs US$6 for a monthly payment, or US$60 paid upfront for twelve months. The latter is US$5 per month as an equivalent, but the first payment is still US$60. Taxes are excluded from that dated example; check the current plan cards or provider before deciding.

For two Standard users, those same reference amounts become US$12 on monthly billing or US$120 prepaid for twelve months, before tax. This example simply multiplies the public per-user amounts; it is not a quote or a promise about your checkout.

Keep the domain registration and renewal in your budget as a separate purchase. Check the actual billing country, currency, first invoice and future renewal at Fastmail. The figures here do not include a partner discount or assume that a future renewal price will remain unchanged.

Fastmail advertises a trial of up to 30 days. Use that time to check the workflow before committing. Its pricing FAQ says unused subscriptions are not refunded, so read the current billing conditions rather than treating an annual purchase as a risk-free trial.

A careful switch, step by step

1. Inventory the current setup. List people, addresses, aliases, important folders, calendars and contacts. Record which tools send messages using your domain.
2. Keep access to your domain. Confirm that you can sign in to the registrar and edit the correct DNS zone. Save the existing mail records before changing anything.
3. Prepare the new mailbox. Follow Fastmail’s current domain setup and import instructions. Plan a test account or address before moving everyone.
4. Change mail routing carefully. Use the exact DNS values shown for your account. Preserve unrelated website records; changing mail delivery does not require moving the website.
5. Test both directions. Send to the new mailbox from an unrelated service and reply back. Check the public contact address, any aliases, phone access and calendar workflow.
6. Retire the old service last. Keep the source account available until the imported material and live delivery have been checked. Save anything you need before cancellation.

Your website’s contact form or transactional messages are a separate delivery path. Test them after changing mail records. A working personal inbox does not prove that a website form, store receipt or password-reset message is being delivered correctly.

Your final check

Choose the plan for your actual users, apps and storage. Confirm the first payment and renewal, keep control of the domain, and test the migration before cancelling the old mailbox. Those checks matter more than choosing the smallest monthly-looking number.