"extensive mail" is correct and usable in written English.
You can use it to refer to multiple pieces of mail that have arrived, for example: "I received an extensive mail today."
The World Music Institute, (212) 545-7536, has an extensive mail order catalog of traditional music.
But Prime's ease and accessibility rely on advanced and extensive mail systems that don't exist everywhere in the world, Rosenbaum said.
Interviews with employees regarding suspicious mail showed that the two workplace-exposed persons with nasal cultures positive for B. anthracis had extensive mail exposure.
Betting that the time was ripe, Christie's complied with Mr. Greenberg's thinking with an extensive mailing of 15,000 catalogs and announcements to buyers and bidders on its contemporary art, folk art, Americana, tribal art, antiquities, 20th-century decorative arts and American Indian lists.
First scientific journals were simply a more efficient way for extensive mailing [1].
All articles were written to be understandable for non-specialist and published on the task group wiki (www.cawses.org/wiki/index.php/Task_4) and through an extensive mailing list.
The days of handing out business cards or Rizla packets emblazoned with phone numbers are disappearing: the 21st century dealer is essentially a social media manager with an extensive mailing list of clients.
First scientific journals were simply a more efficient way for extensive mailing [ 1].
Data were obtained by means of an extensive mailed questionnaire requesting detailed information on established and possible breast cancer risk factors, including reproductive and menstrual history, family history of breast cancer, hormone replacement therapy (HRT) and anthropometric measures, such as body mass index (BMI).
The Telegraph has, in fairness, since posted its own scathing assessment of the product, hence I'm focusing on the more extensive Daily Mail piece.
In a statement on Wednesday the company continued to defend Winterkorn saying there was no evidence that he had read the memo, which was included in "his extensive weekend mail".
