The Manchester United forward posted his eloquent message on Monday evening, less than 24 hours after the agonising outcome to this summer's tournament unfolded at Wembley Stadium.
By midday on Tuesday, his tweet had received almost a million likes and had been retweeted more than 200,000 times. It was also commented on by more than 35,000 of his followers, as fans came out in force to endorse the statement you can read in our separate story.
As for Rashford's fellow players, there was no shortage of them wanting to show solidarity and respect for their colleague after his raw expression of the emotions he was feeling - "I felt as if I'd let everyone down" - in the aftermath of the final.