Mailchimp email provider statistics and deliverability context
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According to Live Direct Marketing's daily Tranco top-1M scan (September 16, 2026), Mailchimp is the email service provider (ESP) for 22,743 domains — 3.58% of 634,905 SPF-publishing domains. Over the last 30 days its share declined by 0.03 pp, and -0.46 pp year-over-year. Its strongest TLD is .com (50.2% of its domains). Detection: include: mechanisms in the SPF record.
Last updated from the 2026-09-16 DNS snapshot.
What Mailchimp represents in this dataset
Intuit Mailchimp — newsletter and marketing automation, dominant SMB ESP in North America and EU.
Directory category: Esp. The classification comes from include: mechanisms in the SPF record. It describes observed DNS infrastructure, not a commercial relationship and not the placement of any individual message.
What the 2026-09-16 snapshot shows about Mailchimp
Across 319 distinct TLDs its top three are .com (50.2%), .org (8.7%), .nl (2.8%) — together 61.8% of the 22,743 domains, which makes the footprint moderately concentrated, with a recognisable home market. The service most often observed on the same domains is Google Workspace (Mailbox, 9,014 domains, 39.6% of them), followed by Microsoft 365 (32.6%). Its share of SPF-publishing domains moved -0.03 pp in 30 days — inside the daily noise of list rotation. Year-over-year the share is -0.46 pp, so the 30-day move is consistent with the longer trend. Directly comparable by the same detection rule: Amazon SES, SendGrid (Twilio), Mailgun. Ranking between them reflects what is published in DNS, not delivery quality or volume sent. All figures come from a single daily DNS snapshot (2026-09-16); a domain appears here when its published records match the include: mechanisms in the SPF record rule, which is an infrastructure fact, not a commercial relationship.
Commonly used together with Mailchimp
What else the same 22,743 domains use — cross-tabulated from the same daily snapshot (2026-09-16).
| Type | Service | Domains | Share of Mailchimp users |
|---|---|---|---|
| Mailbox | Google Workspace | 9,014 | 39.6% |
| Mailbox | Microsoft 365 | 7,418 | 32.6% |
| Mailbox | Self-Hosted | 1,383 | 6.1% |
| Mailbox | Unknown / Other | 938 | 4.1% |
| Mailbox | Mimecast | 656 | 2.9% |
| Mailbox | Proofpoint | 456 | 2.0% |
| ESP | Mandrill | 4,396 | 19.3% |
| ESP | Amazon SES | 3,224 | 14.2% |
| ESP | SendGrid (Twilio) | 3,032 | 13.3% |
| ESP | Zendesk | 2,929 | 12.9% |
TLD distribution (top 30 of 319)
Frequently asked questions
How many domains use Mailchimp?
22,743 domains in the Tranco top-1M use Mailchimp as their email service provider (ESP) as of September 16, 2026, according to Live Direct Marketing's daily DNS scan.
What is Mailchimp's market share?
Mailchimp holds 3.58% of SPF-publishing domains in the Tranco top-1M (snapshot of 2026-09-16). The number is recomputed every day.
Is Mailchimp growing or declining?
Mailchimp's share declined by 0.03 percentage points over the last 30 days (as of September 16, 2026).
What are the biggest alternatives to Mailchimp?
The largest email service provider (ESP)s in the same category by Tranco top-1M share are: Amazon SES, SendGrid (Twilio), Mailgun, Zendesk, Mandrill (as of 2026-09-16).
Largest email service provider (ESP)s in this category
Amazon SES (6.19%) · SendGrid (Twilio) (4.64%) · Mailgun (4.01%) · Zendesk (3.76%) · Mandrill (3.25%) · HubSpot (3.13%) · Salesforce (2.55%) · Mailjet (Sinch) (2.13%) · Cloudflare Email Routing (1.95%) · Brevo (ex-Sendinblue) (1.49%)
Domain sample (top 100 by Tranco rank)
Showing 100 of 22,743 domains.