Seamless.AI

Seamless.AI isn't just a contact directory: it's a full chain, from the data to the booked meeting.

The data engine claims more than 1.8 billion verified business emails and 414 million phone numbers, with 100+ data points per profile refreshed continuously. The Chrome extension lets you pull an email, a cell or a direct dial for any B2B professional, from any website.

The platform's three building blocks:

• Data Engine — Prospector for search, Buyer Intent to spot who's in buying mode, Job Changes to track role moves, CRM Enrich to clean your database, and Pitch Intelligence to personalize the approach
• Engagement Hub — emailing, AI dialer, social selling and 6,000+ integrations, all driven from a single interface
• AI agents — an outbound agent turning signals into sequences, an inbound agent answering incoming intent, an ops agent cleaning the CRM and following up on its own

The Free plan gives you 1 user and 50 credits, plenty to test the data quality on your market before committing. Above that, Pro and Enterprise plans are negotiated based on credit volume and seat count, with unlimited exports and a dedicated success manager. Budget for it: this is a sales-machine tool, not a side project.