Side by side

Atmail Cloud vs Fastmail Calendar

Both stand on business email hosting. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Atmail Cloud

Free trial AndroidAPIiPhone+4

Atmail Cloud combines hosted email, provider branding and administrative integration in one service. Its broad account connections, accessibility statement and support options may appeal to service providers, while buyers must request pricing and trial details.

Visit Atmail Cloud

Fastmail Calendar

Free trial AndroidiPhoneLinux+3

Fastmail Calendar combines shared scheduling, synchronization, imports, offline use, and Fastmail email integration across major platforms. Its paid plans cover individual, family, and business arrangements, with storage and sharing varying by tier.

Visit Fastmail Calendar

The facts

	Atmail Cloud	Fastmail Calendar
Free plan	Not published	A free trial
Open source	Not published	Not published
Runs on	Android, API, iPhone, Linux, Mac, Web, Windows	Android, iPhone, Linux, Mac, Web, Windows
Lowest paid plan	Not published	Basic: $4 per user a month
Plans published	None	6
Maker	Not published	Fastmail Calendar
Website	atmail.com	fastmail.com
On business email hosting	#15 of 33	#11 of 33

Atmail Cloud: what it does well

Unified inbox combines mail, calendars, tasks and files
White labeling supports per-domain logos and colors
Open admin API supports provisioning and monetization
Connects Gmail, Outlook, Yahoo and IMAP accounts
WCAG 2.1 Level A and AA stated

What to know first

Pricing is available only on request
Webmail coverage is listed, not native app coverage

Fastmail Calendar: what it does well

Shared calendars and two-way sync
Apps for Android and iOS
Works offline and syncs later
Imports Google and iCloud calendars
30-day trial available

What to know first

No free plan
Paid service after trial
Fastmail apps lack end-to-end encryption
Some plans charge per user

Alternatives to Atmail Cloud Alternatives to Fastmail Calendar The whole list