(IDEX Online News) – The 47th Street Business Improvement District (BID) will hold a free breakfast seminar on mobile, email and direct mail marketing for jewelers this coming Friday.

The seminar will feature presentations by Cohort Digital Media on mobile marketing, Constant Contact on email marketing and the U.S. Postal Service on direct mail marketing.

The BID seminar starts at 10:30 am at the Diamond Dealer’s Club Café, 580 5th Avenue in Manhattan.