messageheader
nounUK /ˈmɛsɪdʒˌhɛdə/
US /ˈmɛsɪdʒˌhɛdər/
The top part of a message that tells you who sent it and where it is going.
The messageheader showed that the email came from my teacher.
OTHER MEANINGS
2. The first lines of a computer message that hold delivery details.
The program reads the messageheader before opening the email.
3. A block of text at the start of a data message that describes its contents.
Each messageheader lists the date and the subject.
4. The part of a letter or note that shows the sender and date.
Write the messageheader at the top of your note.