In my current position as service co-ordinator at a national charity I frequently receive emails from people in the sector addressed to "Dear Sir/ Dear Sirs", which is evidently gender specific.
I am offended by this casual sexism, in the same way as it would be offensive to assume that office staff were white or of a specific ethnicity and address the administrator as "Dear White".
As customer relations is a central aspect of my job it would not be effective to respond to them in a way that I may wish to. Do you have any suggestions as to how I can pull them up on their sexism without offending clients?