8541 grayboe mail call monday

It looks like you're referencing a specific schedule or event!

"Grayboe Mail Call Monday" suggests that there might be a regular mail call or delivery on Mondays, possibly related to a specific organization, team, or group. Grayboe is likely a reference to a company, team, or group that is associated with this mail call.

Could you please provide more context or information about what Grayboe is and what kind of mail call this refers to? I'd be happy to help you understand the significance of this message!