Gmail is making email marketers sweat again. In the last 12 months alone, the introduction of Tabs caused all-out panic, image caching recalibrated open rate baselines, and grid view caused rendering concerns. Now Gmail is following up with a partial rollout in March of a highly visible native unsubscribe link with a wider rollout, which they announced yesterday.

Now any sender that includes the list-unsubscribe header in their emails will have Gmail’s native unsubscribe link show up next to their sender name when an email is opened, whereas previously the only senders who were able to benefit from this offering were those with stellar reputations—which were the ones who needed it the least.

In this article, Chad White looks at the pros and cons of this new functionality and how best to use it.