The new service, Telegraph Reach, will involve doordrop campaigns such as product sampling and consumer packs.

Nick Barnard, head of the new service at TMG, described it as allowing “significantly greater audience engagement and an audience that is not constrained by circulation or print run.”

TMG is the first media group to partner with TNT in this way.

“What is really important with doordrop campaigns is targeting,” explained TNT Post Doordrop Media innovation director Robert Marriott. "When you start to think about the different things we can distribute, and then put targeting behind that, it becomes an ‘intelligent doordrop’.”

Marriott said the ability to distribute different weights and sizes of items was very attractive to advertisers.

TNT already manages hundreds of doordrop campaigns annually, and can call on a nationwide distribution team of 15,000 people.

“It is geared towards the major population centres, but is a fully national network,” Marriott added.

TMG said Telegraph Reach would run alongside its existing newspaper and magazine inserts offering, and would also encompass cross-media campaigns.