Email Marketing

Quick answer: Optimise for Apple Mail and Gmail first, because together they account for almost 90% of all email opens (Apple 62.26% and Gmail 27.03% in Litmus’s July 2026 email client market share data). Then

Quick answer: To keep emails out of spam, keep hero images under 90KB, supporting images under 50KB, logos and icons under 10KB, and animated GIFs under 150KB, with the total email (HTML plus images) under

Quick answer: Emails usually land in spam for one of six reasons: the sending domain is not authenticated, the unsubscribe process is unclear, the spam-complaint rate is too high, the sender reputation is low, the