On 13 Jan 2021, August Abolins said the following...

.. But there's already options that work well for those who used
desktop or laptop PCs as their primary or even only messaging device
- Can anyone say "point system? For me, that's a no brainer :) ).
But nothing really well suited to people who have multiple devices,
some PCs, some mobile.

The closest thing that works for me is using the nntp approach. I can
work with
messages at either my desktop or laptop. Most of the time those machines are never in the same location.

What's the difference between nntp and a point set up or telnet/qwk?

Any one of those can be used from multiple devices in multiple locations.

So what draws you to one over the others?

But the method lacks the ability to:

[1] save a reply-in-progress at one device, and resume with it at
another device before actually sending it off.

[2] mark/tag messages for reply at one device, and see the same mark/tag at another device.

Is that the ability you wanted?

Other than using an OLMR with the packets on a portable storage device of
some sort, or saving a draft on a BBS whike ysing Telnet, I don't think any option lets yoy do those.

--- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)
* Origin: theoasisbbs.ddns.net:1357 (1:106/127)