I'm looking for a solution to have Solarwinds alert me when inbound or outbound mail appears to be down, can this be done with SAM? A few google searches have pulled some older articles but the useful ones have links with outdated content.
An outbound test would usually be to use the component called an SMTP user experience monitor. I don't know off the top of my head what you would be checking to validate inbound mail, but if you can tell me how you would "know" that inbound mail was not working it would be a good lead and what to set your SAM monitors to look at.
Are you using Exchange or something else?