[Users] password protection

[Pierre Fortin]

On Fri, 29 Jan 2016 16:26:07 +0100 Ralf Mardorf wrote:

>Michael wants to launch the other user account within another user's
>session, so the current session still is directly accessible, there's
>no need to switch between two user's sessions and just claws or
>any other app is running for another user.

[Been quite busy, and under the weather; so sorry for not jumping in
sooner...]

I've been running 2 instances of CM for years, like this:

- login
- start CM#1
- ssh userid2 at localhost
  - login
  - start CM#2
# for OP's requirement:
  - use CM
  - logout

(no xhost, chuser, chroot, whatever...)

Both CM instances are available on screen. The 2nd one can simply be
logged out. No access to #2 from #1, except for USB boot, in which case,
encryption, or keeping #2 mail on a separate USB stick should solve
that.  

HTH,
Pierre