I'm not sure my question really belongs in this forum, but I'm just going to have a try.
I wrote a POP3 server in B4A and it works great (a long as it runs on a port >= 1024). As it serves local data (it might already received pushed data before network connection was lost) it should be able to work without any network connection.
Unfortunately the Android POP3 client app (on my Galaxy S4) refuses to do anything wihout a network connection ? Is there anything I can do about this ?
Yes: the mail apps shows the mails already downloaded but it can not download the messages from my local POP3 server (which should be perfectly possible because the POP3 server is running on the Android device itself).
It works using the K9 email reader:
it is just that the default Android apps (mail, browser) refuse to work without a network connection. Which is normal in 99% of the cases, but just not in my case ...