Vocus.io

Vocus.io is a Gmail productivity extension that doubles as an inside sales enabler with features including email and link tracking (per-recipient), automated followups, reminders, templates, mail merge, scheduling, name-to-email search, meeting coordination, analytics, and team sharing and activity dashboards. The tool allows users to schedule and track email campaigns and integrate data from Salesforce and other CRMs. While the product might appear to be geared toward business users, it seems there’s something in it for everyone.