Current Version:
Version 0.5.7: Install

An unstable version for Sipgate Plus, Yesss WebFon and Yesss+V! is available on this page and ready for being tested.

An alternative version not using Mozilla/Firefox an be found on this page.

  1. Install the Checkyesss extension (see link above)
  2. Restart Mozilla/Firefox
  3. In case CheckYesss does not find the login information automatically, an input box pops up to enter an account name - enter an arbitrary name.
  4. Enter your login data (phone number + password).
  5. Additional accounts can be added by clicking on the "+"-button

Versions History:

* ... comment
+ ... new feature
! ... error correction