Can I A/B test images in emails?

Yes, images can be A/B tested, though they present specific challenges:

Testable elements include:

Image subject (product shot vs lifestyle). Image style (photography vs illustration). Image placement (hero vs inline vs none). Image size and aspect ratio. Number of images (single focus vs gallery).

Challenges of image testing:

Images may not load for all recipients (blocking, slow connections). Effects are often subtle, requiring larger samples. Images interact strongly with surrounding content.

Measurement focuses on clicks since images do not affect open rates (opens happen before images are seen). Track both image clicks and overall email engagement.

Consider rendering: Test with images blocked to ensure your email works without them.

Images communicate faster than words but are harder to measure. Test them systematically despite the challenges.