Intermediate
How to optimize email deliverability on Mailchimp
Quick Answer
Optimize Mailchimp email deliverability by setting up domain authentication, maintaining clean subscriber lists, and following email best practices. Key steps include configuring SPF, DKIM, and DMARC records, regularly cleaning inactive subscribers, and monitoring engagement metrics.
Prerequisites
- Active Mailchimp account
- Domain ownership for authentication
- Basic understanding of email marketing
- Access to DNS settings
1
Set up domain authentication
Navigate to Account > Settings > Domains in your Mailchimp dashboard. Click Verify a Domain and enter your sending domain. Mailchimp will provide DNS records (SPF, DKIM, DMARC) that you need to add to your domain's DNS settings. Copy these records and add them through your domain registrar or hosting provider's DNS management panel.
After adding the records, return to Mailchimp and click Verify. Domain verification may take up to 24 hours to complete.
After adding the records, return to Mailchimp and click Verify. Domain verification may take up to 24 hours to complete.
Tip
Use a subdomain like mail.yourdomain.com for email sending to protect your main domain reputation
2
Configure sender reputation settings
Go to Account > Settings > Sending domains. Select your verified domain and ensure the Default from email address uses your authenticated domain. Navigate to Account > Settings > From email addresses and add consistent sender addresses that match your domain.
Set up a consistent From Name that subscribers will recognize, and ensure your reply-to address is monitored and responsive.
Set up a consistent From Name that subscribers will recognize, and ensure your reply-to address is monitored and responsive.
Tip
Avoid using generic addresses like noreply@domain.com as they can negatively impact deliverability
3
Implement list hygiene practices
Access Audience > Manage Audience > View Contacts. Use Mailchimp's built-in filters to identify inactive subscribers by clicking Filter by and selecting Campaign Activity. Create segments for subscribers who haven't opened emails in 3-6 months.
Set up automated re-engagement campaigns for inactive subscribers, and remove those who don't respond after 2-3 attempts. Enable Double Opt-in in your signup forms by going to Audience > Settings > Audience name and defaults.
Set up automated re-engagement campaigns for inactive subscribers, and remove those who don't respond after 2-3 attempts. Enable Double Opt-in in your signup forms by going to Audience > Settings > Audience name and defaults.
Tip
Regularly export and analyze your audience insights to identify engagement patterns and optimal sending times
4
Optimize email content and design
When creating campaigns, use Mailchimp's Content Optimizer by clicking the lightbulb icon in the email builder. Maintain a healthy text-to-image ratio (aim for 60:40). Avoid spam trigger words like 'FREE', 'URGENT', or excessive capitalization.
Include a clear unsubscribe link and your physical mailing address in every email. Test your emails using Mailchimp's Inbox Preview feature to ensure proper rendering across different email clients before sending.
Include a clear unsubscribe link and your physical mailing address in every email. Test your emails using Mailchimp's Inbox Preview feature to ensure proper rendering across different email clients before sending.
Tip
Use Mailchimp's spam filter test feature to check your content score before sending campaigns
5
Monitor engagement metrics
Access your campaign reports by going to Campaigns and clicking on any sent campaign. Monitor key metrics: aim for open rates above 20%, click rates above 2.5%, and keep bounce rates below 2%. Check your Abuse complaints rate and keep it under 0.1%.
Use the 24-Hour Performance Report to track immediate engagement and identify potential deliverability issues early. Set up automated reports in Reports > Email Performance to receive regular updates.
Use the 24-Hour Performance Report to track immediate engagement and identify potential deliverability issues early. Set up automated reports in Reports > Email Performance to receive regular updates.
Tip
Compare your metrics against Mailchimp's industry benchmarks available in the Reports section
6
Set up proper list segmentation
Navigate to Audience > Segments and create targeted segments based on engagement levels, purchase history, or demographics. Click Create Segment and use conditions like Campaign Activity, Date Added, or Contact Rating.
Send campaigns to highly engaged segments first, then gradually include less engaged segments. This helps build positive sending reputation with email providers.
Send campaigns to highly engaged segments first, then gradually include less engaged segments. This helps build positive sending reputation with email providers.
Tip
Start with your most engaged 20% of subscribers for new campaigns to establish good engagement patterns
7
Implement sending best practices
Use Send Time Optimization in your campaign settings by selecting Use Send Time Optimization when scheduling campaigns. Maintain consistent sending frequency - avoid sudden spikes in email volume.
Gradually increase sending volume for new domains or accounts by starting with smaller batches. Monitor your Delivery Rate in campaign reports and investigate any significant drops immediately.
Gradually increase sending volume for new domains or accounts by starting with smaller batches. Monitor your Delivery Rate in campaign reports and investigate any significant drops immediately.
Tip
Test different sending times with A/B tests to find when your specific audience is most engaged
Troubleshooting
Domain authentication failing
Double-check that DNS records are entered exactly as provided by Mailchimp, including proper spacing and formatting. Contact your DNS provider if records aren't propagating after 48 hours. Use DNS lookup tools to verify record accuracy.
High bounce rates
Enable Double Opt-in for new subscribers and use Mailchimp's email validation feature. Remove hard bounces immediately and investigate soft bounces. Check if your sending domain has any reputation issues using email reputation tools.
Emails going to spam folders
Review email content for spam trigger words, ensure proper authentication is set up, and improve engagement by segmenting your audience. Ask subscribers to add your email to their address book or safe sender list.
Low open rates
Test different subject lines using A/B testing, clean your list of inactive subscribers, and verify your sender name is recognizable. Check if your emails are being delivered to promotions or spam folders and adjust content accordingly.
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