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SPECIFICTION
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Fastmail Calendar

fastmail.com

From $4/mo Free trial WebWindowsmacOSLinuxiOSAndroid
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Spec score 9.0 #11 of 194 in Calendar apps

What it is

Fastmail Calendar is an online calendar integrated with Fastmail email, available on web, Linux, macOS, Windows, Android and iOS. It supports two-way calendar sync and shared calendars, including business plans with sharing and administrative controls. Users can bring in calendars from Google, iCloud and elsewhere, search instantly, and organize events with drag-and-drop editing. It can show schedules in other time zones, compare emailed event updates with earlier versions, and manage calendars offline in its apps; changes sync when the device is back online. Fastmail documents calendar access through CalDAV and JMAP APIs for account data more broadly. The service is paid, has a 30-day trial and does not list a free plan. Options include Basic at $4 a month, Individual at $6 a month, Standard at $6 a month, Duo at $10 a month, Professional at $10 a month and Family at $14 a month. Longer billing terms have separately listed rates. Fastmail was founded in 1999 and is headquartered in Melbourne, Australia.

Spec sheet

Platforms
Fastmail lists apps for Windows, macOS, Linux, iOS, and Android, as well as a browser app.Read 12 Oct 2026 · fastmail.com
Free plan
NoRead 20 Sep 2026 · fastmail.com
Integrations
Fastmail describes integrations with 1Password and Bitwarden for creating Masked Email addresses, and the pricing page mentions integrations including 1Password and Dropbox.Read 12 Oct 2026 · fastmail.com
Mobile apps
ios and androidRead 20 Sep 2026 · fastmail.com
Security
Fastmail says data is encrypted at rest and in transit, supports two-step verification and passkeys, and offers EU or US data residency choices.Read 12 Oct 2026 · fastmail.com
Support
Every plan includes expert support from real people, and the pricing page says support is available 24/7.Read 12 Oct 2026 · fastmail.com
Headquarters
Melbourne, AustraliaRead 4 Oct 2026 · fastmail.com
Founded
1999Read 4 Oct 2026 · fastmail.com
Calendar and email
Fastmail Calendar is integrated with Fastmail email.Read 12 Oct 2026 · fastmail.com
Calendar sharing
Teams can share calendars, and the pricing page lists shared calendars on business plans.Read 12 Oct 2026 · fastmail.com
Calendar sync
two_wayRead 20 Sep 2026 · fastmail.com
Encryption limitation
Fastmail says its own apps do not offer end-to-end encryption, while customers can use PGP or S/MIME in supported third-party apps.Read 12 Oct 2026 · fastmail.com
Event changes
When an event update arrives by email, Fastmail compares it with the prior version and shows what changed.Read 12 Oct 2026 · fastmail.com
External calendars
Users can bring in calendars from Google, iCloud, and elsewhere.Read 12 Oct 2026 · fastmail.com
Offline use
Fastmail says users can manage calendars offline in its apps, with changes syncing once back online.Read 12 Oct 2026 · fastmail.com
Protocols and API
Fastmail documents calendar access through CalDAV and JMAP APIs for account data more broadly.Read 12 Oct 2026 · fastmail.com
Search and editing
The calendar page describes instant search and responsive drag-and-drop for organizing events.Read 12 Oct 2026 · fastmail.com
Shared calendars
YesRead 20 Sep 2026 · fastmail.com
Time zones
The calendar supports viewing schedules in other time zones.Read 12 Oct 2026 · fastmail.com
Who it serves
Fastmail offers individual and family plans as well as business plans with shared calendars and admin controls.Read 12 Oct 2026 · fastmail.com

Plans and prices

Basic $4 a month $4 per user/month; yearly, $3 per user/month ($36 for 12 months); 24 months, $2.85 per user/month ($68.40); 36 months, $2.80 per user/month ($100.80) 6 GB total storage per user · shared calendars Read 12 Oct 2026 · fastmail.com
Individual $6 a month $6 per month; yearly, $5 per month ($60 for 12 months); 24 months, $4.75 per month ($114); 36 months, $4.67 per month ($168) 1 person · 60 GB total storage: 50 GB for mail, calendar and contacts; 10 GB for files Read 12 Oct 2026 · fastmail.com
Standard $6 a month $6 per user/month; yearly, $5 per user/month ($60 for 12 months); 24 months, $4.75 per user/month ($114); 36 months, $4.67 per user/month ($168) 60 GB total storage per user · custom business addresses · shared calendars Read 12 Oct 2026 · fastmail.com
Duo $10 a month $10 per month; yearly, $8 per month ($96 for 12 months); 24 months, $7.60 per month ($182.40); 36 months, $7.47 per month ($268.80) 2 people · 120 GB total storage · private and shared calendars Read 12 Oct 2026 · fastmail.com
Professional $10 a month $10 per user/month; yearly, $9 per user/month ($108 for 12 months); 24 months, $8.55 per user/month ($205.20); 36 months, $8.40 per user/month ($302.40) 150 GB total storage per user · email retention archive for legal compliance · shared calendars Read 12 Oct 2026 · fastmail.com
Family $14 a month $14 per month; yearly, $11 per month ($132 for 12 months); 24 months, $10.44 per month ($250.60); 36 months, $10.27 per month ($369.60) Up to 6 people · up to 360 GB total storage · private and shared family calendars Read 12 Oct 2026 · fastmail.com

Every Fastmail Calendar plan and price →

Strong points and limits

Strong points

  • Integrated with Fastmail email.
  • Calendar changes sync in both directions.
  • Apps support offline calendar management.
  • Imports calendars from Google and iCloud.
  • Supports shared calendars for teams.

Limits

  • No free plan is listed.
  • The service is paid after its 30-day trial.
  • Fastmail apps do not offer end-to-end encryption.

Who it suits

It suits individuals, families and businesses that want calendar sharing alongside Fastmail email. Offline calendar management and imports from other calendar services may also matter to people coordinating across devices or schedules.

Verdict

Fastmail Calendar covers shared use, imports, offline changes and multiple platforms. Its listed plans vary by audience and storage, so compare the billing term and plan details before choosing.

Where Specifiction places it

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