Mailchimp

What people rate it for. Independent reviews credit the drag-and-drop editor, templates, onboarding, audience management, automation and clear open-and-click analytics. A Capterra reviewer in 2026 called it "reliable and beginner-friendly" and said it produced professional campaigns without technical or design experience. G2's August 2026 distribution was 59% five-star and 32% four-star across 17,557 reviews, and a June 2026 MailCon comparison put it at 4.4/5 on Gartner and 4.2/5 on TrustRadius alongside 4.3 on G2 and 4.5 on Capterra.

The cost complaint is a pattern. Pricing that rises sharply as contact lists grow is the most consistent criticism across Capterra and a 2026 review synthesis, with advanced automation, segmentation and customization gated to higher tiers. That synthesis counted roughly 55 pricing complaints, 45 feature-limit complaints, 32 learning-curve complaints and 23 customization or testing complaints in its sample; those are one reviewer's counts, not a representative survey. Capterra reviewers also describe the interface as crowded once you manage several campaigns, audiences or settings.

Trustpilot tells a harsher story. Trustpilot sat at roughly 2.6 to 2.7/5 from about 1,383 to 1,400 reviews in 2026, and the complaints are about the account rather than the emails: billing transparency, overage charges, difficulty cancelling, two-factor authentication loops that lock people out, slow or generic support, and designs or survey data reportedly disappearing after changes or downgrades. These are user reports, not adjudicated findings, but they recur across the review sites and are worth reading before you commit a list.

Security incidents, one confirmed and one disputed. On January 11 to 13, 2023, Mailchimp disclosed that a social-engineering attack on employee credentials gave an unauthorized actor access to a support and account-administration tool. The company said 133 accounts were affected, suspended suspicious accounts and notified customers. In July and August 2025 the Everest ransomware group claimed a Mailchimp breach with a 767 MB dataset. Reporting said samples looked like CRM or marketing exports, and Intuit stated its investigation found no evidence of compromise or exfiltration from Mailchimp or Intuit systems. A February 2026 ThirdProof assessment rated Mailchimp a moderate vendor risk on the strength of both, and said its security certifications were not independently confirmed.

Read the AI data terms. The CRM beta terms say Microsoft Azure and OpenAI may process inputs and outputs, and that Mailchimp and OpenAI may use them to develop and improve the beta and similar products, with an opt-out in account settings. That language is specific to the beta, and you shouldn't assume it covers every AI feature, but it is the only published statement of how Mailchimp's AI handles your data that we found.

The scale figures are Mailchimp's and Intuit's own. The founders page says over 1,500 employees and 13 million global users, neither dated, while an entity estimate lists 974 workers, so headcount is unreconciled. Intuit's FY2027 guidance of $1.256 to $1.266 billion in Mailchimp revenue and 0% to -1% growth is self-reported and points to a mature, flat business. Intuit's segment restructuring may precede further packaging changes.