Mustang Purchase Help

Open Source

Free

Download
  • Connect to your existing email address using JMAP, IMAP
  • Sync your calendar and contacts using JMAP, CalDAV
  • Customize your inbox with filtering
  • End-to-end encryption using PGP, S/MIME
  • Collaborate effectively using shared mailboxes and team features
  • Integrate with your own CRM webapp for seamless workflow

Connect

5 Euro per month

Subscribe

Everything in Open Source, plus:

  • Meet: Video conferences
  • Microsoft Exchange and Office 365 integration using EWS, OWA, ActiveSync
  • E-Mail signature without "Sent by Mustang"
Open Source Individual Business

Donation

You can use the Open-Source version without paying anything. You make the donation out of your free will and generosity.