What is an email signature?

An email signature is text that is appended automatically to the end of a message. It often includes name. Role. Company. Website. Social links. Sometimes legal language. Technically it is just another MIME part that the client adds.

There is also a historical marker for signatures. Two hyphens followed by a space. It looks like this \-- . Early plain text mail readers used that line to know where the signature started so they could hide it if needed.

It is the ship's calling card. Signed by the captain at the bottom of every dispatch.

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