Added

• Privacy Request Expirations: You are now able to configure how long submitted privacy requests remain active before expiring, which then allows contacts to re-enter your Simon instance after a certain amount of time. TTL (time-to-live) is the number of days after which privacy requests expire and previously denylisted contacts are able to re-enter your Simon instance if they re-engage with your brand (e.g. sign up again for marketing emails, make a purchase, etc.).

Improved

• Braze User Aliases: We've added support for user aliases within our Braze integration. When syncing to Braze from Simon, if an external_id does not exist for a contact, we will now fall back to a user alias if it exists in the Simon account.

Added

• Amazon Ads Integration: This integration allows you to sync contact audiences directly to Amazon Marketing Cloud (AMC), where they will appear as Advertiser Uploaded Audiences. With this, you can create lookalike audiences in Amazon DSP, suppress existing customers from acquisition campaigns, target high-LTV customers with personalized ads, and retarget churn-risk users across Amazon-owned properties.

Improved

• AI Model Upgrade: All GenAI features (e.g. Jinja Generator, Segment Descriptions, etc.) have been upgraded from Claude 3.5 Sonnet to Claude 4 Sonnet, providing enhanced performance and capabilities across the platform.
• Klaviyo API Enhancement: We've enhanced our Klaviyo trait syncing operations to provide improved performance for large-scale profile updates and backfills.

Added

• Journey Campaign Metrics Filtering: Added toggles to help users focus on relevant data by only viewing rows for nodes in the current live journey version and excluding non-sending nodes like branching and joining steps. This enhancement makes campaign performance analysis more streamlined and targeted.

Fixed

• Resolved a bug in sorting functionality on the Flows index table, as well as normalized the column widths for better readability.

Improved

• Improved the search interface on both the Flow and Journey index pages for better usability.

Improved

• Increased the property threshold to 150 for trait syncing to Klaviyo
• Improved the isolation of Journeys execution to provide more consistent journey launch / entry timing

Added

• Programmatic Updates to the Subscription Center: You can now programmatically update the membership of individual contacts to lists in Simon's Subscription Center by sharing files containing email addresses to add / remove from the given list.

Improved

• Updated time zone formatting across both Flow Builders & Journeys to be consistent & clear relative to UTC.

Added

• New Salesforce Marketing Cloud Channel Action: We've added the Add to and Update Data Extension to the Flows - Beta flow builder.

Fixed

• When using Simon Webhooks, the UI would crash if sampling a contact failed to return a contact. Now, the failure is displayed gracefully in the form of a user-friendly validation error.

Added

We now support building one-time segment-triggered journeys! Select the "Drain immediately after sending" option on your journey's entry criteria to stop the journey from capturing new contacts beyond the initial membership of the underlying segment. Read more here.

Improved

• Proactively scaled data pipe and message sending infrastructure, both for Simon Mail specifically but also generically across channels, to improve message throughput for Black Friday + Cyber Monday season.

Fixed

• Ensured subject line character count limits don't take into account extra characters from Jinja personalization.
• Fixed a bug where emojis weren't rendering appropriately in subject lines.

Added

• Engagement Index in Simon Predict: We've introduced the Engagement Index, a brand-specific metric for measuring customer engagement. Use it to identify top prospects for campaigns, build lookalike audiences, or replace outdated engagement criteria. This flexible tool helps you tailor marketing strategies based on real engagement insights.
• 1:1 Couponing Assignment: You can now perform per-contact coupon or voucher assignment within Simon. This allows you to send contact-specific coupon codes that are assigned at the time of send. It's also compatible with Journeys branching, allowing you to send different lists of coupon codes to different groups of contacts in different variants of your campaign. Read more about it here.
• Custom Headers in Simon Mail: Simon Mail now supports custom headers (also known as x-headers)! These can be leveraged for a variety of use cases -- for example, managing your deliverability by integrating with ISP-specific deliverability insight tools. Check out some of our sample use cases and how to configure x-headers for your Simon Mail campaigns here.