Looking for a quick and easy way to segment your file? Sometimes the best answer is to ask subscribers what they want. State Line Tack sent an email asking its newsletter subscribers to fill in a profile and identify themselves as either Western or English style riders.

If you have a great case study, test results, or lessons learned to share with your fellow email marketers, you now have until August 3rd to submit a proposal.

some explanation from Google about the new unsubscribe feature

At this point, the only advice I can give you is to ensure you test before sending IF delivery into Outlook inboxes is important to you.