Marketo Release Notes | 2025-09

What do the 2025-09 Marketo updates really mean for your team?

We break down what matters, what to act on, and where it impacts your marketing operations.

Features

• On-Demand Webinar Activity Retention: Interactive Webinars users now have On-demand Webinar Dashboard data available for more than 30 days (previously it was only up to 30 days from the day of the webinar). Manual sync
• Email Designer – AI Assistant Permissions: Marketo Admins can provide specific users with access to GenAI features. Set up permissions
• Email Designer – Dark Mode: You can now utilize Dark Mode, which allows supporting email clients and apps to display emails with darker backgrounds and lighter colors for text, buttons, and other UI elements. Dark mode
• Email Designer – Content Collaboration Workflow: You can now comment on and collaborate with fellow Marketo users within an email asset. Tag team members (Marketo users who have the appropriate asset permissions) and they will receive an email or pulse notification. Email collaboration
• Email Designer – Redirect Fixes: Some users were experiencing redirect issues with URLs for emails created using the new Designer (e.g., directly pasting the URLs or bookmarking email assets did not always work). This issue has been resolved. Additionally, links to email assets from Email Templates > Details > Used By will redirect to the corresponding email asset.

Announcements

• REST API Double Slash Deprecation: On September 16, 2025, Adobe transitioned to a more modern hosting infrastructure for REST API URLs that leverages newer technology, adding security and scalability. If your subscription has been using APIs with a double forward slash (https://experienceleague.adobe.com//?lang=en) in the URL, please read this Nation post for next steps.

• Switching Back to Velocity Scripting in the new Email Designer: Adobe Marketo Engage released a feature called Conditional Content for the new Email Designer this past June. The feature was powered by Handlebar scripting instead of Velocity scripting, in an effort to provide a little more flexibility in your dynamic content. But when we discovered it was causing some tokens to be resolved incorrectly, we decided to temporarily disable it. Learn More

• Marketo Engage Identity End of Life: In August 2025, Adobe began phasing out support for Marketo Engage Identity (logging in via login.marketo.com). To prevent interrupted access to Marketo Engage, you must transition to Adobe Identity no later than September 30, 2025.

  • IP Restrictions Deprecation: Support for Restricting Marketo Logins Based on IP ended on July 30, 2025. The feature will remain operational until the transition to Adobe Identity is complete. A new location-based access control feature for Adobe Identity in the Adobe Admin Console is coming soon.

  • Single Sign-On (SSO) Deprecation: Support for Marketo Identity SSO ended on July 30, 2025. The feature will remain operational until the transition to Adobe Identity is complete. Single Sign-On for Adobe Identity in the Adobe Admin Console must be configured separately. For setup steps, see Set up identity and Single Sign-On.

What this means for you and your team

On-demand webinar retention matters because you can now use webinar engagement beyond the short reporting window. That helps nurture, score, and report on evergreen demand without exporting data immediately. The catch: if you rely on manual sync, make sure ownership and timing are clear, or you’ll still lose visibility.

Email Designer permissions for AI are more about governance than capability. This lets you control who can use GenAI, which is useful if you want to test productivity gains without opening the door to uncontrolled copy generation. Put approval standards and brand rules in place before broad rollout.

Dark mode support is a practical improvement, but it’s incremental. It mainly reduces email rendering risk in modern clients, especially for branded templates. You still need to test carefully, because dark mode behavior varies widely and can break contrast, logos, or button visibility.

In-email collaboration is more impactful for teams with slow review cycles. Commenting and tagging inside the asset can reduce back-and-forth in email QA, speed approvals, and keep feedback attached to the work. The limitation is process discipline: without clear roles, collaboration noise will replace email chaos.

Redirect fixes are operational cleanup, not a strategic gain. They reduce friction when finding and reopening email assets, which helps admins and operators day to day. Useful, but mostly a reliability improvement rather than a workflow change.

REST API double-slash deprecation is a real risk item. If any integrations, scripts, or documentation still use the old URL pattern, you need to audit and update them now to avoid breakage. This is especially important in complex stacks where Marketo connects to CRM, middleware, or custom services.

Velocity rollback in Conditional Content shows the new Email Designer is still maturing. If you were planning to use Handlebar-based logic, pause and validate alternatives before building on it. For now, this is a reminder to avoid overcommitting critical campaigns to unproven features.

Identity migration and related deprecations are the biggest operational priority. Moving to Adobe Identity is not optional, and the loss of legacy SSO/IP controls means your access governance may change. Treat this as a cross-functional project involving admins, security, and IT, not just a login update.