by return (of post)
by return (of post)
Through prompt mail correspondence back to the sender. Primarily heard in UK. Please indicate your interest in this offer by return of post.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
by reˈturn (of ˈpost)
(British English) using the next available post; as soon as possible: Please reply by return of post.Farlex Partner Idioms Dictionary © Farlex 2017