Link to private message a user from outside via URL

[techAPJ (Arpit Jalan)]

This feature is now available in core Discourse:

Create a link to start a new personal message with pre-filled information

Discourse now supports composing a new (pre-filled) personal message via URL! To compose a new pre-filled message, modify URL params like this: https://discourse.example.com/new-message?username=techapj&title=message%20title&body=message%20body This will open a composer window pre-filled with username, title and body. Breaking down the link / URL to show the available options, we have: the base URL / link: https://discourse.example.com/new-message the ? URL operator to add the dif…