Cross-ESP Suppression Decisions — Unified
Contacts bouncing in HubSpot shouldn't keep receiving from Customer.io. CommsOK normalizes delivery events across all your ESPs and delivers suppression decisions to every platform.
The Problem With Multi-ESP Stacks
When you use more than one email platform, each one maintains its own suppression list independently. A hard bounce in Mailchimp doesn't suppress that address in HubSpot. A spam complaint in Customer.io doesn't stop SendGrid from sending. This creates dangerous gaps where bad addresses leak through — damaging your sender reputation across all platforms.
Most teams solve this with manual CSV exports. But manual syncing is slow, error-prone, and impossible to maintain as your ESP stack grows.
How CommsOK Solves It
One engine to normalize events, compute suppression decisions, and deliver them to every connected platform.
Event Normalization
Different ESPs report events differently. CommsOK normalizes bounces, complaints, and engagement signals into a unified format.
Cross-Platform Suppression
One suppression decision applies everywhere. A hard bounce in any ESP produces a decision that gets delivered to all connected platforms.
Continuous Monitoring
Not a one-time sync. CommsOK watches every send, every bounce, every complaint — and continuously updates suppression decisions across your platforms.
Supported ESPs
Connect your existing platforms. More integrations are being added continuously.
Currently Supported
Coming Soon
Common Use Cases
Whether you run two ESPs or ten, CommsOK computes suppression decisions across all of them.
Transactional emails through one platform, marketing through another. A bounce in either should suppress everywhere.
Lifecycle emails in HubSpot, product emails in Customer.io. One set of suppression decisions across both.
Each client uses a different platform. CommsOK normalizes across all of them.
Historical analysis is always free. See your cross-ESP suppression gaps before you commit to anything.
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