You can then make an external API call to e.g.
https://yourdomain.com/loop-server/plugins/inserter/index.php?forum=[Forum Name]&msg=[Message URL-encoded]&code=2498jfknf-changeme
to send a message to one of your AtomJump Loop Server's forums programmatically.
The response is a JSON array and includes "success" (true / false), and "msg" with the corresponding human message.
Find the server at https://github.com/atomjump/loop-server. Download and install.
Download the .zip file or git clone the repository into the directory loop-server/plugins/inserter
Copy config/configORIGINAL.json to config/config.json
Edit the config file to match your own email account sender, and default forum to insert messages to.
Note: we recommend that you only use this plugin if you are on a secure HTTPS server. Otherwise, the passcode can potentially be intercepted, as it is unencrypted.