When creating artwork for email blasts keep these things in mind:
--Total image size: Less than 500kb
--Color: RGB or Black and White (no CMYK)
--Resolution: 72 dpi
--Total dimensions: 800 pixels x 600 pixels
--Keep all the main information at the top. Treat images and graphics as a top banner rather than a complete page.
--Do not include detail (information) text within an image. Text should be provided separately in a Word document.
--Save image files as jpeg, gif, or png. No PDFs are acceptable.