I have had problems in the past with my hosted sites email servers going down at times when an email was being sent. Since this could result in lack of important communications coming in, I was forced to modify DotNetNuke ( I know, I know ). I have been running this code for quite some time without issue in any modules.

With that being said, I wanted this implementation to be as close to invisible to the core as possible. This way no modules that use the core SendMail method would fail. I have wrapped the core SendMail class around a new mail provider class. This way I can switch mail providers as needed. For instance the 3 I have created so far. A default core implementation, a fail safe queue with retries, & a mock for testing purposes of the general site. When I pull a site down to a test environment before a upgrade, I switch to the mock provider to prevent mail from really being sent.

I think a provider for mail has many advantages in the core of DotNetNuke. I know Cathal & Shaun was interested when I mentioned this to them before DNN 4 shipped. But they were busy getting 4.0 out the door. I would still like to offer this back to the Core for inclusion.  

What are others thoughts on this? I may need help / votes for this to be included.

Dave