The initiative, part of a move to strengthen Royal Mail's relationship with the Association of Publishing Agencies, means that customer publishers can save £2,000 from the cost of having the effectiveness of their titles measured through the Royal Mail APA Advantage Study, which tracks customer magazine effectiveness.
The study features 70 magazines and over 20,000 customer interviews, conducted by Millward Brown, making it one of the largest pieces of media research in the UK and more cost effective for publishers than undertaking their own analysis.
Emily Fovargue, Royal Mail's head of publishing, said: "Royal Mail has long been an advocate of the customer publishing industry and its power as a marketing and CRM tool.
"We are further strengthening our relationship with the APA and making it even more cost effective for publishers to benefit from the Advantage Study so that they can demonstrate and improve the effectiveness of their titles.
"Proving the value of marketing activities becomes increasingly important in time of economic downturn."
The initiative means The Advantage Study, which was launched in 2005, will now be co-branded between Royal Mail and APA.
Julia Hutchison, COO of APA, said: "The results that have been delivered as a result of the Advantage Study have to date been one of the main reasons for the astonishing growth of this medium.
"Proving that customer magazines are read on average for 25 minutes, deliver a 44% response rate, eight per cent sales uplift and 32% brand loyalty is a highly persuasive argument in convincing marketers that a customer magazine is a must have in the marketing plan."