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About Email Firewalls

Email firewalls are like spam filters, which contain or filter malicious content through a security appliance or server.

Troubleshooting Test Email Delivery Failures

There are a few reasons you might not receive test campaigns, including spam filters or firewalls.

I know this email address is valid, but it hard bounced

Valid email addresses can hard bounce for many reasons. Reading bounce headers (SMTP replies) can provide insight on what caused an address to hard bounce.

Update Your Connected Store

Learn how to update your connected store for WooCommerce, Adobe Commerce, and more.

Set Up Email Domain Authentication

Set up your email domain authentication so campaigns appear to come from your domain. Make your campaigns look more professional and avoid spam folders.

View and Manage Inbox Messages on Mobile

Mailchimp Inbox helps you manage 1-to-1 communication with your contacts. In this article, you'll learn how to view and manage Inbox messages on your mobile device.

Collect Consent With Popup Forms

Learn how to collect consent for your popup forms from new and existing contacts.

Add a Mini Quiz to Your Pop-up Form

This article helps users understand how to add a mini-quiz to a popup form and map their quiz to a group in their audience.

About Unsubscribes

When a subscriber declines to receive further campaigns, it's called an unsubscribe. Learn how unsubscribes work in Mailchimp and how you can manage them.