Email Hygiene Automation Across All Your ESPs

Email lists naturally decay by 25-30% every year. People change jobs, abandon old inboxes, or mistype addresses in forms. This natural churn fills your list with invalid addresses, spam-trap domains, and "role" accounts (info@, sales@) that rarely convert. When you hit Send, these bad addresses bounce or trigger filtering algorithms that flag you as a spammer—resulting in lower inbox placement, shrinking open rates, and quietly leaking revenue.

Bad list hygiene damages your sender reputation across all future campaigns. Internet Service Providers keep score: exceed a ~2% hard-bounce rate or accumulate too many complaints and they throttle or block your domain altogether. The result is lost pipeline, wasted ad spend, and frustrated teams wondering why their "great email" never reaches real people.

Traditional list cleaning requires manual exports and tedious verification processes. And if you use more than one ESP, manual exports between platforms leave dangerous gaps — contacts bouncing in HubSpot can keep receiving from Customer.io. CommsOK instead connects directly to your ESP, monitors each send's delivery and engagement signals, and automatically suppresses addresses showing signs of decay—hard bounces, spam-trap patterns, chronic non-openers—excluding them from every future campaign. Your team sends as usual while CommsOK quietly handles the cleanup in the background.