XF 1.5 How to disable email without errors?


Well-known member
I am currently running a demo version of my website so that my members can try XF out and provide feedback.
I have turned email functionality off because I do not want hundreds of thousands of users to get email from a demo site.
This results in a lot of errors which is problematic because I need to keep a close eye on the error log. How do I prevent these errors? What settings should I use?