endmessage

noun
UK /ˈendˌmesɪdʒ/
US /ˈendˌmesɪdʒ/

The last message that someone sends to finish a talk or a chat.

She sent an endmessage to say goodnight to her friends.


OTHER MEANINGS

2. A message that marks the end of a story, game, or event.

The game showed an endmessage when the player won.

3. A short note added at the end of a letter or email.

He added an endmessage thanking everyone for their help.

4. The final part of a computer program's output that tells the user it is done.

The program printed an endmessage after finishing the task.