Addressing the recipient of a message as "Dear Sir" is a common and perfectly acceptable practice, even if you do not know the gender of the recipient.

Name: Addressing the recipient of a message as "Dear Sir" is a common and perfectly acceptable practice, even if you do not know the gender of the recipient.
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Question

Quizplus · Accepted Answer

Using "Dear Sir" assumes the recipient is male, which may not be appropriate if the gender is unknown. It's better to use gender-neutral language like "Dear [Name]" or "To whom it may concern."

Addressing the Recipient of a Message as "Dear Sir" Is