Technical Support

Email Delivery

Soft vs. Hard Bounces
How Mailchimp Prevents and Handles Abuse
Anti-Spam Requirements for Email
Set Up Custom Domain Authentication: DKIM and SPF
About Email Authentication
Use Send Time Optimization
The Importance of Permission
Add an Unsubscribe Link
About Bounces
Schedule or Pause a Regular Email Campaign
About Fake Signups
About Gmail Tabs
About Compliance for Email Marketing
My campaign looks bad in Outlook.
My subscribers aren't receiving my campaigns
My campaigns are going to spam folders.
About Spam Filters
I know this email address is valid, but it hard bounced.
Examples of Compliant and Non-Compliant Lists
About Omnivore
About Abuse Complaints
Gmail is clipping my email
Why We Can't Stop or Edit Sent Campaigns
About Blacklists
My Campaign From Name Shows "mcsv.net"
Limitations of Free Email Addresses
About Safe Sender Lists
Cancel a Campaign
Troubleshooting Test Email Campaigns
About Company Whitelisting
When Email Addresses Go Stale
Why We Require an Unsubscribe Link
Avoid Outlook's Junk Folder
View Abuse Complaints
How Legitimate Marketers Can Prevent Spam Complaints
My subscriber received multiple copies of my campaign
View Bounce Reasons
Why We Verify Imported Contacts
Find Email Headers and Source Code
About Mailchimp Delivery Rates
Schedule Batch Delivery
Causes of High Bounce Rates
About Bounce Suspension
About Suspension
My email is breaking when I forward it.
About List Suspension
About Direct Complaints
About Spamtraps
About Bounce Warnings
About Delivery Insights
About Forwarded Campaigns and Unsubscribes
My unsubscribe rate is really high.
How Throttling Improves Deliverability
I Received Spam from Mailchimp
About Email Firewalls
My contact was unsubscribed without clicking the unsubscribe link.
About Unsubscribe Suspension
Using Ads in Email Marketing Campaigns
About Abuse Warnings
How Constant Contact and Mailchimp Manage Bounces
About Prohibited Content
My campaign links trigger "possible fraud" alerts
Tips for Daily Senders
About Accidental Abuse Complaints
About Abuse Suspension
My To: field breaks in Outlook.
What are Challenge-Response Filters?
I'm getting bounce reports when people try to sign up to my list.