Smarter Segmentation & List Cleaning

Your email list is only as good as the people on it. Today we're shipping a major upgrade to segmentation and list management that makes it dead simple to target the right subscribers and clean out the rest.

Engagement-Based Segmentation 📊

You can now filter and segment your audience based on how engaged they actually are with your emails. New filter criteria include:

• Open rate: Segment subscribers by their historical open rate across all your sends
• Click rate: Find your most (or least) engaged clickers
• Last activity date: Surface subscribers who haven't interacted in months
• Source tracking: See which form or signup source each subscriber came from

Combine any of these with your existing filters (tags, custom fields, created date) to build hyper-targeted audiences. For example: "people who signed up more than 6 months ago AND have an open rate below 10% AND aren't tagged as customers." One click to save it as a dynamic audience.

Dynamic Audiences, Supercharged 🔄

All of these new engagement filters work with our dynamic audience system. That means subscribers automatically move in and out of segments as their engagement changes. No manual work required.

This also unlocks powerful automation triggers. Set up a re-engagement flow that fires when someone drops into your "low engagement" audience, or a VIP sequence when someone enters your "highly engaged" segment.

List Cleaning Made Easy 🧹

Keeping a clean list is one of the most important things you can do for deliverability. Inbox providers like Gmail and Outlook watch your bounce rates and engagement closely. A dirty list means more of your emails land in spam.

With these new segmentation tools, list cleaning is now a few clicks:

1. Filter for subscribers added 6+ months ago with low open rates and no recent activity
2. Review the segment to make sure it looks right
3. Export or remove: either archive them, export for a re-engagement campaign, or clean them out entirely

We also now surface clearer status breakdowns across your list (active, cleaned, bounced, unsubscribed, and unconfirmed) so you always know the health of your audience at a glance.

Why this matters

Even the best email marketers see 15-30% list decay per year (higher in B2B where people switch jobs frequently). Regular list hygiene isn't optional: it's the difference between landing in the inbox and landing in spam.

These tools give you everything you need to stay on top of it.