Doubletick - Email Tracking for Gmail and GSuite vs. Autobound

Doubletick is Free and unlimited email tracking for Gmail and Google Workspace (G Suite) with real-time desktop notifications and WhatsApp like double tick marks (✓✓) in your sent box. A single blue tick ✓ indicates that an email has been sent, but yet to be opened by the recipient. Double blue ticks ✓✓ mean that your email has been opened by the recipient and grey ticks indicates that email is not tracked.

Autobound is B2B signal intelligence infrastructure: the real-time signal layer powering enterprise GTM. We turn 700+ signal types from 35+ sources into structured, timestamped buying signals across 50M+ companies and 250M+ contacts, delivered via REST API, file push, or OEM licensing. Most sales intelligence and intent data is a black box. You get a score with no idea what happened, when, or to whom, and it's stale by the time you act. Autobound is the opposite. Every signal is sourced, timestamped, and resolved to the exact company and contact, then refreshed daily to weekly.