Hey guys, I recently installed Cloudron 1-click through Digital Ocean and started running my Ghost CMS app. The whole process was fairly quick and didn't take much time.
The problem for me is emails and signup, I was able to access my Ghost Admin, my blog and everything looks fine but new members are not able to signup 
It first said "Please enter a valid email" which I corrected by following their email docs. Now that is fixed, now it's showing "please check your inbox for confirmation email" at signup but no messages are being sent!
To fix this I followed their setup instructions for Mailgun and have updated that in my Admin settings and in config json file. After the changes are made, we need to restart the app for config changes to take place, when I restart Cloudron again puts in it's own config for email (the default). I even tried to add my Mailgun credentials in Outbound email settings of Cloudron, issue still remains!!
Shouldn't we have control over what config is being used instead of being forced into defaults?
This sounds similar problem to this - Can we use Cloudron smtp for ghost email config