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About Duplicate Contacts

Learn how Mailchimp handles duplicate contacts in your account, and how to remove duplicates from a spreadsheet file if you need to.

My unsubscribe rate is really high

It is normal that contacts will sometimes unsubscribe from your email marketing. But if you see a spike in your unsubscribe rate, learn some reasons why.

My subscribers aren't receiving my campaigns

If your subscribers aren't receiving your campaigns from Mailchimp, there are a few things to try.

My email looks different in Outlook

If your email looks different in Outlook, it may have to do with the version of Outlook rendering the campaign. Get tips for fixing common issues in Outlook.

My campaigns are going to spam folders

Campaigns end up in spam folders for several reasons, including the sending email address, subject line, or message content. Mailchimp tools can help you test.

My email content disappeared

Email content can disappear for a few reasons. In most cases, it can be recovered. Learn what can cause content to disappear and how to fix it.

Getting Started with the Mailchimp Mobile SDK

Learn how to use the Mailchimp Mobile SDK to add contacts from your mobile app to your Mailchimp account.

Migrate Your Klaviyo Account to Mailchimp

Learn how to switch from Klaviyo to Mailchimp.

Migrate Your Hubspot Account to Mailchimp

Learn how to switch from Hubspot to Mailchimp.

Migrate Your Constant Contact Account to Mailchimp

Learn how to switch from Constant Contact to Mailchimp.

Manage Tags

Learn how to access the Tags page, where you can view, manage, and create tags for your list.

Mailchimp Site Tracking Pixel Integration Guidance

Advanced integration guidance for the Mailchimp Site Tracking Pixel.