The 40-year-old technology fan, best known for playing hapless entrepreneur Ian Beale, has gone around the Elstree set of the soap getting his pals to pose for pictures admitting they've yet to register.
And those who don't sign up will find their face on his homepage on the site.
No Twitterer: Samantha Janus, who plays Ronnie Mitchell
Big Twitter: Adam Woodyatt, who plays much-loathed Ian Beale in EastEnders
Jake Wood, who plays Max Branning, Ricky Groves, who's better known as loveable mechanic Garry Hobbs, and Samantha Janus, who stars as nightclub owner Ronnie Mitchell, have all been targeted.
But it seems Adam's efforts are so far proving fruitless.
According to The Sun, the stars have since been bombarded with letters from Twitter fans demanding they join.
Others featured in Adam's campaign include Cliff Parisi and Scott Maslen, who play Minty and Jack Branning respectively.
They are as bemused as the others by Adam's efforts to recruit them.
Twitter allows users to send and read short instant updates about each other's lives on the web or their phones.
From left to right: Jake Wood who plays Max Branning, Ricky Groves, who's better known as mechanic Garry Hobbs, and Cliff Parisi, who plays Minty Peterson