Google’s new bulk sender guidelines spell trouble for B2B

In October, Google and Yahoo unveiled a crucial update to their bulk sender guidelines.

This new regulation, which went into effect on February 1, affects both bulk emailers (those who send more than 5,000 emails to Gmail accounts daily) and general Gmail users, and introduced authentication requirements and defined thresholds for spam complaints. Specifically, they have defined a spam complaint threshold of 0.3%.