Streak Mail Merge for Gmail - The best way to send personalized mass emails with follow-up sequences:✨ automatically send follow-ups with recipients who don't reply👋 looks and feels personal⚠️ smart alerts 🔋 optimize for replies🏠 lives entirely inside Gmail
Sortd - Rated the #1 App for Gmail
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KanbanMail - A Kanban board for your emails.
NetHunt CRM - Turn Gmail into a smart CRM
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.