Every email client can handle plain-text email just fine, but each email client renders HTML email slightly differently. Some provide excellent support for HTML and CSS (like Apple Mail), but many do not. Some email clients disable the loading of images, some email clients purposely ignore certain HTML or CSS features, and not all your recipients will have the same fonts installed. With all these factors combined, it's not surprising that your email may end up looking slightly different in various email clients.
Your best bet for consistency is to try the following:
- Use Direct Mail's built-in templates for your email. Our template have been tested to look great in all the popular email clients.
- If you use a third-party template, try a find one that has been tested in a variety of email programs.
- Try using standard "web safe" fonts in your message: Arial, Helvetica, Comic Sans MS, Courier New, Georgia, Impact, Lucida Granda, Palatino, Times, Trebuchet, Verdana, Symbol
- Design test your email before you send it. Design tests show you full-size screenshots of what your email looks like when viewed in a variety of popular email clients.