Engage users at the exact moment intent is highest
Turn product usage data into timely customer conversations. Trigger personalized emails the moment a user completes a trial action, hits an account milestone, or goes idle.

Trigger evaluation latency
Event payload triggers
Cron polling overhead
Engineered for developer velocity
Event-driven architecture
Listen directly to application webhooks or API events to initiate flows instantly without delay.
Deduplication & frequency caps
Prevent alert storms by configuring cooldown intervals and maximum message frequencies per user.
Multi-property condition logic
Combine event names with customer tier, account age, or custom JSON attributes before triggering.
How it works
Define event trigger
Select the trigger event like user.signed_up, payment.failed, or project.created.
Set filter criteria
Add conditional rules such as plan == 'enterprise' or sends_count > 1000.
Connect email template
Map dynamic event variables into the email and launch the automated trigger.
Explore related features
Automated multi-step sequences
Visual flow automation with customizable time delays, smart delivery windows, and conditional branch rules based on recipient behavior.
Dynamic audience segmentation
Target specific customer subsets based on engagement scores, lifecycle stage, signup dates, and custom database properties.
Unsubscribe compliance
One-click List-Unsubscribe RFC headers, customizable preference centers, and automatic global suppression to protect your reputation.
Ready to build with Behavioral triggers?
Join thousands of engineering teams delivering transactional and lifecycle email with blazing speed and zero downtime.