The phrase "a goodbye message" is correct and usable in written English.
You can use it when referring to a message intended to bid farewell to someone, often in a personal or emotional context.
Example: "Before leaving the office, I wrote a goodbye message to my colleagues to express my gratitude for the time we spent together."
Alternatives: "farewell note" or "send-off message."
Legendary producer Brian Eno – who last worked with Bowie on his 1995 album Outside – paid tribute and revealed the musician emailed him a week ago, in what he now realised was a goodbye message.
That letter was widely interpreted as a goodbye message to the country.
But yesterday, there was only a goodbye message on the club's Web site, www.bottomlinecabaret.com.
But as they battled to stay afloat, three Iraqi refugees clung to the sinking dinghy, with one man sending a goodbye message to his father.
The 19-year-old has collected more than £3.22m for the Teenage Cancer Trust since posting a picture of himself in hospital in April with a goodbye message when he believed he was close to death.
By Maria Konnikova November 19, 2014 A childhood picture of Jaylen Fryberg, the deceased gunman in the Marysville-Pilchuck High School shooting, with a goodbye message from a friend.
"I remember making this post on the old board when more people were going on: If this place becomes like a magazine or much bigger than it was, you can kiss it all goodbye," message board member Damos Abadon told me.
Now I pretty much only see Notes used by outgoing Facebook employees leaving a long goodbye message, or Facebook divisions like Engineering posting deep descriptions of their latest coding adventures.
The guy is stuck hurtling through space with no chance of rescue, burning through the last of his oxygen supply to record Pepper a morose goodbye message.
However he received over 100,000 public donations and raised his target to 1 million pounds after a final "goodbye" message he posted on Facebook went viral.
In the world of IM flirting, this means that you should shoot a quick goodbye message before the conversation starts to grow stale.
