PebblePost Closes $25 Million Series C Round to Accelerate Adoption of Programmatic Direct Mail®Led by Advance Venture Partners, investment will bolster marketing capabilities and solidify company’s leadership position NEW YORK, August 24, 2018-- PebblePost, the creator of Programmatic Direct Mail®, today announced it has secured a $25 Million Series C round, led by Advance Venture Partners (AVP). The new capital will enhance the company’s capabilities to convert shoppers into buyers with meaningful mail.