Introduction
I made the changes in JMailQ to run on Joomla 4 Beta 1. By the time Beta 7 came around many things had changed and the codebase I had would not work. Actually the underlying email handling stuff worked fine, it was the administration end that required additional changes.
After I got all of that up and running I turned my attention to another component I use on one of my sites. The developer of the component has abandoned it but I will need to keep it going once I migrate to Joomla 4 on the sites I run. As I started this project it occurred to me I should probably document the changes I found should I need to do this again, and to also save others some time.
If you find this helpful please let me know. If you have additional information that you think should be added send it along and I will add it.