Seems like most of the folks here use the ServerObjects email object for outgoing mail and it's queue feature; I'm using the Persits AspEmail component, but there don't seem to be many posts or examples on it.

I have it working successfully, in single email mode. It has a Queue mode that works correctly on my development box, but I haven't gotten it to work on my HMS site. I get an error of "Invalid registration key".



Has anyone accomplished this successfully?

Sounds like there may be an issue with that server, specifically the license key not being entered in to the registry correctly. I'd be glad to take a look at the ticket if you have one open, just PM me the ticket number. If not you can call into support and open a ticket about it.



Regards,
Dave

The Queue mode is part of the premium features, so likely you are on a server with the basic key installed. Support should be able to help you out with that if they have not already.