separated from Wright's, "in letters as tiny as Grierson cared", but the latter refused and despite convincing Watt to leave the credits unaltered, Watt never forgave Grierson. Cavalcanti noted that he was credited for "'sound direction', which didn't even exist as a credit", but Grierson claimed that Cavalcanti had asked for his name to be excluded from the GPO's credits in case his involvement in such a documentary unit undermined his reputation in commercial cinema. Night Mail was promoted with a largely successful advertising campaign to aid its release. The GPO commissioned posters, special screenings, and other soft publicity opportunities, taking advantage of the glamorous image and popularity of railway films to promote Night Mail. Unlike other GPO films, which were primarily screened in schools, professional societies, and other small venues, Night Mail was shown in commercial cinemas as an opening for the main feature. However, poor contracts for short documentary films meant Night Mail failed to make a significant profit despite its high viewership. In 1938, the film was re-released as part of the 100th anniversary of the travelling post office, which featured a collector's edition information booklet on the film. The first broadcast on BBC Television was not until 16 October, 1949. In 2007, Night Mail was released on DVD by the British Film Institute following a digital restoration of the original negatives. The set includes 96 minutes of bonus features, including the 1986 sequel Night Mail 2. Reception Writing for The Spectator in 1936, Graham Greene gave the film mild praise, describing the "simple visual verses of Mr Auden [as] extraordinarily exciting", while admitting that the film as a whole "isn't a complete success". Greene dismissed the criticism of including Auden's verse from C. A. Lejeune's review in The Observer, however he found fault with some of the quality and clarity of some of the scenes. The Times praised the film for showing "the marvellous exactitude with which his Majesty's mails are distributed and delivered." A review in The Daily Worker noted "the cool, competent way in which the men go about their job awakens pride and admiration in those who appreciate the dignity of labour." In The Morning Post, a reviewer believed that Night Mails achievement was obtaining "natural acting from the railway and postal officials concerned, as it is extremely difficult to prevent people from 'putting on their best behaviour' when they know they are