From a Bookbub press release at Digital Book World:
BookBub today announced it has surpassed one million subscribers. The company, which sends readers a free daily email alerting them to limited-time discounts on acclaimed ebooks, is currently signing up between five and ten thousand new subscribers a day.
“We look forward to continuing to help readers discover deals on books they’ll love.”
“The response to BookBub has been phenomenal, ” said Josh Schanker, BookBub’s president and co-founder. “Readers love taking advantage of the great deals, and publishers have found us to be an effective way to gain exposure for their titles and authors.”
. . . .
The company attributes the interest to BookBub’s approach. When registering, subscribers create a profile listing what they like to read, and BookBub only alerts them to discounts on ebooks matching these interests. BookBub also employs an editorial team to select titles that are of the highest quality and best fit for its subscribers.
. . . .
BookBub’s rapid growth has attracted partners from across the industry to feature ebooks with the service. The company is currently working with five of the big-six publishers, dozens of midsized and small publishing houses, and hundreds of bestselling independent authors.
Link to the rest at Digital Book World