The world's most widely used email marketing platform, now part of Intuit.
⚡ Monitored by EmailExacto IntelligenceMailchimp (Intuit) is an email service provider (ESP) that handles sending infrastructure, IP reputation management, and delivery feedback for email campaigns, transactional messages, or both. Their sending reputation and your domain's authentication configuration are the two primary drivers of inbox placement when using Mailchimp.
Mailchimp handles authentication through domain verification. Adding DKIM and SPF DNS records (Mailchimp provides them) allows Mailchimp to send email that passes DMARC alignment for your domain. Without verification, Mailchimp sends from their subdomain.
When you send through Mailchimp, messages leave via their SMTP servers or API. The receiving server sees Mailchimp's sending IPs in the Received headers. For your domain to pass DMARC, you must configure Mailchimp's DKIM keys and SPF include: in your DNS. Without this, email sent through Mailchimp fails authentication for your domain.
Mailchimp uses shared IP infrastructure. Your domain's engagement metrics directly affect your domain's reputation. Mailchimp automatically handles bounce suppression through their Omnivore abuse prevention system.
Your ESP affects deliverability through their shared IP pool quality, feedback loops and bounce handling, and ease of authentication configuration. Mailchimp's deliverability is strong for well-maintained lists. Domain authentication is particularly important for separating your domain's reputation from the shared IP pool.
Regardless of ESP, the fundamentals are yours to control: domain authentication, list hygiene, engagement rates, and complaint rates have more long-term deliverability impact than the ESP choice itself.
EmailExacto Intelligence monitors your sending domain independently of your ESP — giving you visibility into authentication, blacklist status, and inbox placement regardless of which platform you send through.
✓Complete Mailchimp's domain verification process — it enables DKIM and SPF authentication.
✓Keep your list engagement healthy — Omnivore will pause accounts with high complaint rates.
✓Segment and suppress inactive subscribers rather than sending to your full list.
✓Set a DMARC record at p=none minimum before sending through Mailchimp.
✓Monitor your Mailchimp account's compliance score in Account Overview.
✓Use double opt-in to improve list quality and reduce complaint rates.
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