Option A – Client Provided HTML:
HTML (complete with hosted images, “in line style,” live URL links and all necessary closing tags are required). HTML size must be under 102K to avoid clipping in Gmail.
NEWSLETTER ADVERTISING SPECS
300 x 250 pixel Big Box
728 x 90 pixel Leaderboard
Accepted file formats: .JPG, .GIF, or .PNG
Max File Size: 40K (Animated GIF max is 150K)
Colour Format: RGB