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Although the song at the time was not released as a single, there was a promotion film made using Linda McCartney's photo stills and the song aired often on television. When the McCartney catalogue was transferred from Capitol Records to Columbia Records, this version of "Maybe I'm Amazed" was put out as an "oldies" single on Columbia in 1980.
Seven years later at the beginning of 1977, the live version of the song from the LP "Wings Over America" was released on 45 with the B-side being "Soily" - both songs taken from the concert LP. There was also a Capitol promo 12 inch single of the song (Capitol SPRO 8574/77) mixed and edited in both stereo and fold-down mono. The 45 single reached the 10 ten in the charts in 1977 and has become a classic on 70s radio. The 23 inch single promo was also re-issued for Records Store Day in 2013 by Hear Music.
The song has been a staple of Paul McCartney's live shows starting with both European tours in 1972, The "James Paul McCartney" television special in 1973, the 1973 UK Tour, it is also featured in the "One Hand Clapping" segment from 1974, the 1975 UK and Australia Tour, the 1976 North American and UK Tour, the "Wings Over The World" television special in 1979, The "Rockshow" movie originally premiering in 1980 and re-issued/remastered in 2013 by MPL, the 1979 UK Tour, the 1989 European and North American Tour, the 1990 UK and US Tour, the "Tripping The Live Fantasic" concert LP from November 1990, it was also played at the tail end of a "Simpsons" episode in 1995, the song also appeared in classical form performed by the Loma Mar Quartet on the "Working Classical" LP (EMI Classics) in 1999, it was performed on the "Back in the US/ World" 2002/2003 tours and CDs, the "Paul McCartney In Red Square" DVD from 2005 and the "Space Within Us" DVD from 2006, it was played on his "On The Run Tour" of 2011 as well as his "Out There" tour of 2013. In 2015, the song was featured on the "Saturday Night Live: 40th Anniversary" special. The song was also performed on his "Freshen UP" tour of 2018.