What Does Signature Block Mean?
A signature block is a block of text appended to an email message. In some ways, the signature block represents some of the interesting continuations as email and the internet both evolved over time.
Techopedia Explains Signature Block
As an ASCII text block, a signature block in email is a fairly primitive digital asset. It is often made with plain text, although some signature blocks can include rich media and other additions. For example, some plain text signature blocks may feature someone’s name surrounded by rows of asterisks or lines as a decorative border. This harkens back to the days of plain text and bulletin boards, in the pre-mobile interface which was largely ASCII character-based.
