Your MailChimp tracking reports provide key information about your email marketing, and are a great a starting point to test and improve your campaigns.
Many settings for each of your lists list can be changed or edited from the List name & defaults screen including list name, campaign defaults, subscription set
Outlook will almost always break your email message if the "To:" field is personalized using a merge tag and there's no default value for that recipient.
The nerds in MailChimp Labs developed the Subject Line Researcher, a free tool to help you test your subject lines. Check it out!
A few things can cause broken code or attachments in a delivered campaign, including spam filtering and improperly processed personalization and multipart content.
When you create a campaign in MailChimp, you can Name your campaign, provide a From name, Email subject, and From email address, and Personalize the "To:" field on the Setup step of the Campaign Builder.
The best email subject lines are short, descriptive and provide the reader with a reason to explore your message further. Tell, don't sell your email.
Setting up an A/B split campaign is similar to creating a regular campaign, but it allows you to send different versions of your content to subscribers to see which works best.