Who do you contact, agent, PM or the company emailing the deal?

[Steven Gillmer]

If you are like me, you are probably on several email lists and receive all kinds of deals, good and bad, in your inbox every day. When you find one that interests you, who do you contact? Do you contact your Realtor, who is hopefully out there looking for deals? Do you contact your current property manager, who will most likely manage the property for you and is also a licenced agent? Or, do you contact the lead source directly, who is also a property management firm? 

On the one hand, I want someone that represents me to provide an unbiased perspective but I feel some sort of responsibly to the company sending the lead, especially if there are current tenants that I would switch to my property manager.

Any thoughts would be appreciated.