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Version0.9.8
Revision1
Size141.5 MB
LicenseProprietary
Confinementstrict
Basecore24

Email, calendar and tasks for Microsoft 365 and IMAP


Simson Desk is a desktop email, calendar and task client. It works with
Microsoft 365, signing in with your Microsoft account, and with any mailbox
that speaks IMAP and SMTP — Google Workspace, Zoho, Titan and most business
hosts. It keeps a local copy of your mail so it stays fast and readable
offline.

  • Mail with conversation threading, rules, folders and multi-select
  • Calendar and Microsoft To Do tasks
  • Address book built from your contacts, your organisation's directory and
the people you actually write to
  • Remote images blocked until you allow them; links open in your browser
  • Save attachments, and save a message as .eml, .html or .pdf
  • Colour themes that can change by day or between working and off days
  • The local copy encrypted at rest, with the key held in your system keyring
  • Locks itself when left idle, and needs a fresh sign-in to reopen

Privacy policy: https://simsondesk.com/privacy/email-client

Simson Desk is an independent client and is not affiliated with or endorsed
by Microsoft.

Update History

0.9.8 (1)
23 Aug 2026, 06:30 UTC

Published23 Aug 2026, 06:19 UTC

Last updated23 Aug 2026, 06:18 UTC

First seen23 Aug 2026, 06:30 UTC