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Set Up 2-Factor Authentication with SMS

Learn how to set up and use SMS 2-factor authentication to enhance your account's security.

Set Up a 2-Factor Authentication App at Login

Learn how to set up a 2-factor authentication app like Google Authenticator to increase data security for your Mailchimp account.

About Denylists

Learn how some email servers and spam filters use denylists, lists of IP addresses for known spammers, to prevent email delivery.

About SMS Marketing Credits

Learn how credits work with Mailchimp's SMS Marketing.