Toomey, who was previously European product leader for Acxiom, brings more than 10 years of direct marketing experience to the role, which she begins today.
Mark Roy, chief executive and founder of The REaD Group, said: "Over the last year we have engineered a fundamental change in the suppression dynamic, focusing more on retention and less on simple record removal.
"The level of consultation that we are now providing to clients requires tangible and intelligent advice married to effective solutions. Dee's 10 years plus of solid direct marketing experience and her data knowledge fit perfectly with The REaD Group's future objectives."
The REaD Group has created several new products over the past 12 months, including , TBR Daily and .
Toomey said: "Whilst sorry to leave Acxiom, the strategic vision that The REaD Group has for future development is simply too good to miss. I am really looking forward to being part of what promises to be unparalleled growth."