ESP Deliverability Report
Updated Apr 1, 2026
Mailchimp
The all-in-one marketing platform for small businesses
Deliverability Grade
Good email deliverability practices
18%
Primary Inbox
67%
Promotions Tab
14.8%
Avg Spam Rate
Marketing ESP
Platform Type
Shared IPs
Available
Dedicated IPs
Available
IP Warmup Required
No
Price Range
Mid-range
Dedicated IP Min Volume
100,000+ emails/month (Premium plan)
Authentication & DMARC Alignment
SPF Auto-Configured
Yes
DKIM Auto-Configured
Yes
Custom Sending Domain
Yes
DMARC Alignment Notes
Mailchimp configures DKIM on your custom domain when you authenticate your domain. Older Mailchimp accounts may still use mailchimp.com for signing — check your domain settings to confirm alignment is passing.
Deliverability Features
- Inbox rate benchmark reports
- Send time optimization (STO)
- Smart list segmentation
- Abuse complaint monitoring
- Bounce tracking dashboard
Shared IP Reputation
Mailchimp's shared pools are well-established with long-running reputation. However, as one of the largest ESPs, pool quality varies across tier. Pro and Premium senders are isolated from lower-engagement senders.
Best For
Inbox Placement Breakdown
Benchmarks based on InboxEagle seed list testing data across ecommerce and SaaS senders. Individual results vary based on list quality, engagement, and domain reputation.
Key Takeaways for Mailchimp Senders
Mailchimp scores a Grade B with a 14.8% average spam rate and 18% Primary inbox placement.
Configuring a custom sending domain is straightforward — do this before scaling sends.
Dedicated IPs are available from 100,000+ emails/month (Premium plan). Below this threshold, shared pools offer more established reputation.
See Your Actual Mailchimp Inbox Placement
Benchmarks show averages. InboxEagle shows you exactly where your Mailchimp emails land — Gmail Primary vs. Promotions vs. Spam — across Gmail, Yahoo, AOL and Outlook after every send.
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