I have a 'packet BBS' service on the local MVMA/AREDN network.
This BBS has a 'Network Node' function similar to 'AREDN',
i.e. Automatic Adaptive network linking

It also has a RMS (Winlink compatible Radio Message Service).
NC8Q-BPQ can send (and receive) Winlink Email via the Winlink CMS (Common Message Servers).
I have recently added the ' Winlink forms' under 'General' and the 'ICS forms' under 'ICS Forms'.
This provides a browser accessible 'fill-in-the-blanks' forms.
In theory, anyone with a Winlink account (*) can receive Winlink Email via this server.
This has not yet been attempted.
It works for me. :-|

Requirements:

'User' account credentials at NC8Q-BBS (*) and any of:

A computer connected to the internet and any web browser.
A computer and an AREDN node connected to the local MVMA/AREDN network via RF or tunnel.
Winlink Express or RMS Express or compatible and connected to the local MVMA network.

To send a 'Winlink Email':

Start here:

From the MVMA network:
http://localnode.local.mesh:8080/cgi-bin/mesh
click 'nc8q-bpq' in the 'Services' column.
(Takes you to: http://nc8q-bpq.local.mesh:8008/Node/NodeIndex.html)
From the internet:
View http://nc8q.ddns.net:48008/Node/NodeIndex.html with your browser.

Click 'WebMail' and enter your credentials.
Click 'Send Mail'
If you wish to use an ICS or General form, click 'Use Template' and select from drop down menus.
(Some of the forms on this server have been modified with drop down selections modified for use with AREDN.)
If you wish to use previously saved text from a form, click 'Browse' and then select your local file.
You should use default type 'P' (personal) and, normally, leave the BID blank.
Address the message 'To' <callsign>@winlink.org
If not using a form, enter your message into the large white background box.
Click 'Send'.

3s, Chuck