Spam filters, these days, like to see a balance between text and image content in HTML emails. If you send a campaign that contains image only content, it's going to have a really hard time getting past most spam filters. We suggest that you add a paragraph or two of text to your HTML version of your campaign (outside of the image, text embedded on an image won't count) to help lower your spam filter score.
Because of the way spam filters think, directly sending or uploading a file created from another program (like Word, Photoshop, Publisher, Indesign etc) or just sending a .jpg or other image only file would not be a possibility.
Instead you would need to:
- First, convert your file/flyer to clean HTML files (not created in Word!).
- Once converted, you can upload your HTML code in your MailChimp account under Campaigns.
- Just follow the setup steps to name your campaign and so on.
- Then on the select a layout page of the Campaign Builder, choose the paste in code option.

If you don't want to, or don't know how to use HTML, you have several ways to create a campaign. You'll find all of the possibilities here: What are the different ways I can create a campaign in MailChimp?.