adviceman49 answered Sunday October 11 2015, 10:19 am: Unless the convention of personal written communication has changed. The proper way to address a female, especially in a business communication is MS. If you have spoken to or received communication that shows her or you hear her address herself as Mrs. or Miss then you use whichever she has used in addressing herself.
rainhorse68 answered Sunday October 11 2015, 8:24 am: As far as I'm aware if their status or own preference is not known to you then it is correct to use Ms. I haven't personally encountered the title Mz, but it might be a newer convention I'm not familiar with? Possibly the recipient isn't either, so the older and widely accepted Ms is your best bet. [ rainhorse68's advice column | Ask rainhorse68 A Question ]
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