New security rules come into place for outlook.com on May 5. Update, April 20, 2025: This story, originally published April 18, has been updated with further advice from Red Sift’s Faisal Misle on ...

If you're still judging email performance by open rates, it's time to catch up. Apple’s iOS 15 put open rates on life support, and iOS 18 pulled the plug. With Apple devices responsible for nearly ...