email hosting service · Fastmail

Fastmail

Paid mailbox hosting on your own domain, with a 50 GB mailbox, calendar and contacts for each user.

51/100

#4 of 9 email hosting services
Facts checked 9 Oct 2026

In short

The Standard plan gives each user 50 GB for mail, calendar and contacts, plus 10 GB of files¹.
Standard costs 25 zł per user a month on a yearly term or 30 zł month to month; the page shows no US dollar price¹.
IMAP, POP, CalDAV and CardDAV are listed; Basic lacks IMAP, CalDAV, CardDAV and custom domains^1,8.
Two-step sign-in accepts authenticator apps and WebAuthn security keys⁵, and the security page lists passkey sign-in^4,6.
Fastmail's terms promise no uptime level and mention no service credits⁷.

Fastmail suits small teams that want a 50 GB mailbox with open protocols on their own domain^1,8. Standard includes shared calendars, a shared address book and security-key sign-in^1,5. The catch: the terms contain no uptime commitment, and its business and help pages describe no single sign-on or admin-enforced two-step sign-in^3,15.

Best for: Small teams that want mail, calendar and contacts that work in any standard app.

Where the points come from

Price4 of 22

Mailbox29 of 29

Security10 of 28

Reliability and support8 of 21

Price 4 of 22 points

Rule	What is published	Points
Cost for a team of 5	Not publishedPrice page shows only Polish zloty (Standard 25 zł per user a month, yearly), not US dollars or euros¹.	0 / 12
Free plan on your own domain	NoEvery plan is paid; the page offers a trial of up to 30 days¹.	0 / 6
Monthly billing	YesStandard is sold month to month at 30 zł per user, as well as on longer terms¹.	4 / 4

Mailbox 29 of 29 points

Rule	What is published	Points
Storage per mailbox	50Standard gives 50 GB for mail, calendar and contacts per user, plus 10 GB of files¹.	10 / 10
Open mail and calendar protocols	IMAP, POP3, CalDAV, CardDAVHelp lists all four; Basic plans lack IMAP, SMTP, CalDAV and CardDAV, and Standard is above Basic⁸.	8 / 8
Shared calendar and contacts	YesStandard lists shared calendars and a shared company address book¹.	5 / 5
More than one domain	YesPricing FAQ: everyone can make addresses on "any domain you have brought into Fastmail"; help says "You can have multiple domains"^1,9.	3 / 3
Aliases and catch-all	YesStandard lists shared addresses such as support@; help documents catch-all aliases and names no plan limit^1,10.	3 / 3

Security 10 of 28 points

Rule	What is published	Points
Two-factor sign-in	YesTwo-step sign-in works with any TOTP authenticator app or WebAuthn keys; the article names no plan limit⁵.	7 / 7
Passkeys or security keys	YesWebAuthn security keys work for two-step sign-in⁵; the security page lists passkey support⁴; passkey help covers it⁶.	3 / 3
Admins can require 2FA	Not publishedNot published on the vendor's administrator help page¹⁵.	0 / 3
Single sign-on (SAML)	Not publishedNot published on the vendor's business and pricing pages^1,3.	0 / 5
SOC 2 Type II or ISO 27001	Not publishedNot published on the vendor's security page or its secure-service help article^4,14.	0 / 6
SPF, DKIM and DMARC guides	Not publishedHelp explains DMARC and points to SPF and DKIM DNS records, but no page read gives steps for all three^11,12.	0 / 4

Reliability and support 8 of 21 points

Rule	What is published	Points
Written uptime commitment	NoTerms provide the service "as is" and "as available", state no uptime level and mention no credits⁷.	0 / 9
Public status page	YesPublic status page with a notice history link¹³.	2 / 2
Live support	Not publishedPricing page promises 24/7 expert support but does not name live chat or phone¹.	0 / 4
Mail migration tool	YesPricing page FAQ: "an import tool that walks you through it" plus a migration guide and free migration support¹.	3 / 3
Official phone apps	YesFeatures page offers a mobile app and links to the App Store and Google Play².	3 / 3

The rule behind each line: how we score email hosting services.

Plans and prices

As the vendor lists them, before tax. Prices are in US dollars unless the plan shows euros; the points use US dollars, with euros converted at the ECB rate.

Plan	Price as listed	Per month	Notes
StandardPer user	25 zł per user a month, billed yearly (30 zł month to month)¹	–	50 GB mail, calendar and contacts; custom domains; US dollar price not shown
ProfessionalPer user	45 zł per user a month, billed yearly (50 zł month to month)¹	–	100 GB mail, calendar and contacts; US dollar price not shown

Fastmail's price page showed Polish zloty only, tax included, so we record no US dollar price. Longer terms of 24 or 36 months cost less per month¹.

Strengths

50 GB of mail, calendar and contacts storage per user on Standard¹.
IMAP, POP, CalDAV and CardDAV are documented; only Basic is cut off from IMAP, CalDAV and CardDAV⁸.
Authenticator apps and WebAuthn security keys work for two-step sign-in⁵.
Catch-all and shared addresses such as support@ are included^1,10.
A public status page shows incident history¹³.

Limits

The terms disclaim any availability guarantee and mention no service credits⁷.
Basic does not include custom domains, IMAP, CalDAV or CardDAV, so only Standard and up fit this use^1,8.
No SOC 2 or ISO 27001 report is named on its security pages^4,14.
Single sign-on and admin-enforced two-step sign-in are not described on its business and help pages^3,15.

What Fastmail says

Vendor claims. We show them, but they earn no points.

Fastmail says its support team is available around the clock³.
Fastmail says it performs regular internal audits⁴.

Other email hosting services

1
Google Workspace GmailSmall teams that want a written 99.9% uptime commitment and detailed sign-in options
82/100
$35/mocost for a team of 5
2
Zoho MailSmall teams that want a low price and are happy to pay a year at a time
79/100
$5/mocost for a team of 5
3
Infomaniak Mail ServiceSmall teams that want Swiss-hosted mail with calendars and a free way to start
62/100
Not publishedcost for a team of 5
5
Rackspace EmailSmall teams that want month-to-month billing and phone support
45/100
$50/mocost for a team of 5

All 9 email hosting services

Sources

Fastmail pricing, Fastmail. Accessed 9 Oct 2026.
Fastmail features, Fastmail. Accessed 9 Oct 2026.
Fastmail for business, Fastmail. Accessed 9 Oct 2026.
Fastmail security, Fastmail. Accessed 9 Oct 2026.
Using two-step verification (2FA), Fastmail Help. Accessed 9 Oct 2026.
Passkeys, Fastmail Help. Accessed 9 Oct 2026.
Terms of service, Fastmail. Accessed 9 Oct 2026.
Server names and ports, Fastmail Help. Accessed 9 Oct 2026.
Custom domains with Fastmail, Fastmail Help. Accessed 9 Oct 2026.
Catch-all/wildcard aliases, Fastmail Help. Accessed 9 Oct 2026.
Sender authentication, Fastmail Help. Accessed 9 Oct 2026.
DMARC, Fastmail Help. Accessed 9 Oct 2026.
Fastmail status, Fastmail. Accessed 9 Oct 2026.
How Fastmail provides a secure service, Fastmail Help. Accessed 9 Oct 2026.
Account administrators, Fastmail Help. Accessed 9 Oct 2026.

Website: www.fastmail.com · Markdown version · We are not affiliated with Fastmail.