Mailchimp’s Popup Forms Overhaul: A Strategic Shift With Some Friction

On 26 February 2025, Intuit’s Mailchimp unveiled a major upgrade to its platform with the launch of enhanced popup forms—an initiative designed to modernise list-building capabilities for marketers and sharpen audience engagement. The move is underpinned by technology from Intuit’s 2024 acquisition of Amped, and signals a mobile-first direction for Mailchimp’s user interface and data collection tools.

What’s New: Feature Highlights

The new popup forms boast over 80 customisable templates optimised for mobile, with drag-and-drop controls allowing marketers to tailor fonts, layouts, branding, and call-to-action elements. Key capabilities include:

  • Mobile-first design: Reflecting the reality that over 75% of web traffic originates on mobile, these forms aim to reduce user friction across devices.
  • Dynamic visitor targeting: Behavioural triggers and advanced filtering enable more precise, personalised form delivery.
  • Zero-party data capture: Direct input from users helps marketers build compliant, high-quality audience profiles for email and SMS segmentation.
  • Versatile use cases: Forms support everything from discount promotions to newsletter signups and webinar registrations.

Mailchimp’s refreshed approach to popup forms is already generating positive user feedback. Avenova, an early adopter, reported a 27% uptick in SMS list growth within a single month of implementation.

Expanded Capabilities and Integrations

Beyond the popup overhaul, Mailchimp introduced broader platform enhancements:

  • Meta lead ad syncing: Direct lead import from Facebook, Messenger, and Instagram to Mailchimp.
  • Simplified customer journey builder: A streamlined interface for creating automated, multi-step campaigns.
  • .XLSX support for audience imports: Enabling easier migration of data from spreadsheets into Mailchimp.
  • SMS promo codes: New functionality to embed promotional codes directly into SMS campaigns.

To promote the launch, Mailchimp rolled out the “Popup Like It’s Hot” campaign—a tongue-in-cheek homage to early 2000s hip hop—across digital media, social channels and podcasts via its in-house creative team, Wink Creative.

Friction for Existing Users

Despite the polish of the rollout, the transition hasn’t been entirely smooth. While Mailchimp’s public messaging avoided direct reference to disruptions, anecdotal evidence from forums and help centre traffic suggests some users faced broken or misfiring forms after the upgrade. Incompatibilities arose in particular for those using older embedded forms with custom JavaScript or CSS, especially within content management systems like WordPress or proprietary platforms such as ASP.NET.

Mailchimp’s support materials now include updated documentation for troubleshooting embedded signup issues, and users are being advised to:

  • Rebuild and re-embed forms using the latest form builder
  • Validate performance across devices and browsers
  • Watch for layout conflicts and script blocking

This is not the first time a UI/UX update has tripped up marketers relying on legacy assets—a perennial risk when platforms iterate rapidly without backwards compatibility safeguards.

Why This Matters to Email Professionals

Popup forms are often the gateway to email acquisition. By reengineering them for a mobile-first world and embedding richer data capture tools, Mailchimp is enhancing its value proposition as a full-stack marketing platform. The inclusion of Meta integration, journey building, and SMS promo enhancements points to a broader trend: ESPs are racing to offer “mini-Customer Data Platform” capabilities for the SME segment.

However, the upgrade also underscores the tension between innovation and stability. For email professionals, especially those managing high-volume sites or operating within complex tech stacks, this evolution introduces risk—forcing audits of embedded assets and form workflows to ensure continued deliverability, compliance, and user experience.

This update places Mailchimp in closer competition with platforms like Klaviyo, Omnisend, and ActiveCampaign, which have already leaned into mobile-first, multichannel automation with robust segmentation. The real test will be how gracefully Mailchimp manages the transition for its 12+ million users, many of whom rely on set-it-and-forget-it form integrations.

For stakeholders in the email ecosystem, the message is clear: form acquisition strategies are getting smarter, but they now require greater technical agility and ongoing maintenance to remain effective.

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Andrew Bonar
Andrew is the co-founder of emailexpert.
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