To all marketers sending emails to a list of contacts: With the upcoming Google/Yahoo regulations next month, it's mandatory for you to clean up your email lists, eliminate unsubscribed folks & improve your current outreach strategy if you see anything like on the chart below in your Google Postmaster.

Exceeding a 0.1% spam-report complaint rate should make you worried about email deliverability, and going beyond 0.3% should make you worried about your future at the company, as this will bring your organization unpleasant news about its marketing email placement.

Check Google Postmaster. Always.