Compare extensions
2 of up to 2 side by side. Each value shows the date we observed it.
Add is off: this comparison holds up to 2.
Audience and ratings
Store users
3
Fewest usersas of 3 Oct 202622
Most usersas of 2 Oct 2026Rating
Unknown
as of 3 Oct 2026Unknown
as of 2 Oct 2026Product and publisher
Publisher
iKryten
as of 3 Oct 2026Mave
as of 2 Oct 2026Publisher listings
1 listing
as of 3 Oct 20262 listings
as of 2 Oct 2026Category
Communication
as of 3 Oct 2026Communication
as of 2 Oct 2026Listing status
Active
as of 3 Oct 2026Active
as of 2 Oct 2026Manifest
Version 3
as of 3 Oct 2026Version 3
as of 2 Oct 2026Package size
78.18KiB
as of 3 Oct 2026118KiB
as of 2 Oct 2026PermissionsRequested access describes what an extension can do, not what its developer intends. It is not a safety verdict.
API permissions
5 requested
- storage
- alarms
- idle
- notifications
- contextMenus
6 requested
- alarms
- notifications
- storage
- contextMenus
- identity
- offscreen
Website access
3 patterns
- https://api.fastmail.com/*
- https://*.api.fastmail.com/*
- https://*.fastmailusercontent.com/*
1 patterns
- https://fastmail-checker.mave.me/*
Marks appear only when at least two values are known, there is no tie, and the values were observed within one day of each other. Ratings need at least 20 ratings to be marked.
Compare versions and update dates
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Create your free accountWhat stands out
- Most users: Fastmail Checker (as of 2 Oct 2026).
- Fewest permissions: Fastmail Notifier (as of 3 Oct 2026).
Store users and ratings are observations, not revenue or lifetime installs. A larger audience or a higher rating does not prove a better product.
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2 of 2 selected
Fastmail NotifierCommunication
Fastmail CheckerCommunication