Fastmail Calendar vs mailbox

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.

mailbox is a paid email service from a maker founded in 2014 and headquartered in Berlin, Germany. It works on the web, iOS, Android, Windows, macOS, and Linux, and supports IMAP and SMTP; Light also includes POP3 access. End-to-end encryption and custom domains are supported. There is no free plan, though a 30-day trial is listed. Light costs €1.00 per month when billed annually and includes 2 GB of mailbox storage, three @mailbox.org aliases, a calendar, and an address book. Standard costs €4.00 per month, billed monthly, and includes 20 GB of mailbox storage, 25 @mailbox.org aliases, 50 custom-domain aliases, 10 GB of Drive storage, Office, and Meet. Premium costs €12.00 per month, billed monthly, with 50 GB of mailbox storage, 25 @mailbox.org aliases, 250 custom-domain aliases, 100 GB of Drive storage, Office, and Meet. The listed plan differences let users choose among storage and alias allowances, with Office and Meet included on the two higher plans.