Is Email Semi-Structured or Unstructured Data?

Emails, for example, are semi-structured by Sender, Recipient, Subject, Date, etc., or with the help of machine learning, are automatically categorized into folders, like Inbox, Spam, Promotions, etc.

Is email structured or unstructured?

Email: Email has some internal structure thanks to its metadata, and we sometimes refer to it as semi-structured. However, its message field is unstructured and traditional analytics tools cannot parse it.

Are emails semi-structured?

XML, other markup languages, email, and EDI are all forms of semi-structured data. OEM (Object Exchange Model) was created prior to XML as a means of self-describing a data structure.