Works with
Apps that work with Fastmail
11 of the 1555 tools in this directory name Fastmail among their integrations.
A listing names up to eight integrations, so a tool that is not here may still connect to Fastmail. Check its own site before you rule it out.
Fastmail is listed here tooFree trial · from $3/mo · pricing, plans and platforms
Calendar & Scheduling
- SavvyCalScheduling links where invitees can overlay their own calendarFree trial · from $10/mo
- BusyCalCustomizable calendar and task app for Mac and iPhoneFree plan · from $49.99 one-time
- DaybridgeOne calendar for work and personal plans across accountsFree plan · from $5.83/mo
- Calendar 366Calendar and task app for iPhone, iPad, Apple Watch and MacFree plan · from $19.99/yr
Email Apps
- SaneBoxAI email filtering that works inside the email app you already useFree trial · from $6.99/mo
- MailspringOpen-source desktop email client for Mac, Windows and LinuxFree plan · from $8/mo
- Clean EmailInbox cleaner for bulk deleting, unsubscribing and auto rulesFree plan · from $9.99/mo
- Leave Me AloneUnsubscribe from mailing lists and screen unwanted sendersFree trial · from $9/mo
To-Do List Apps
Daily Planner Apps
Common questions
- Which calendar and scheduling apps work with Fastmail?
- SavvyCal, BusyCal, Daybridge and Calendar 366 name Fastmail among their integrations. A listing names up to eight, so others may connect to it too.
- Which email apps work with Fastmail?
- SaneBox, Mailspring, Clean Email and Leave Me Alone name Fastmail among their integrations. A listing names up to eight, so others may connect to it too.
- When was this checked?
- Each tool's listing shows its own date. On this page they run from Oct 4, 2026 to Oct 9, 2026. Integrations are added and withdrawn without notice, so confirm on the tool's own site.