Master Inbox Reviews — Discover what people think of this product.

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Master Inbox

Master Inbox: Combine Email & LinkedIn accounts into a unified inbox

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Master Inbox unifies replies from all your sending tools, Smartlead, Instantly, Apollo, and more into one powerful inbox. No matter what platform you use, we ensure you never miss a reply. Built for outbound teams and agencies, Master Inbox centralizes Email and LinkedIn responses, adds smart filtering, tagging, and follow-up tools so you stay organized, close faster, and scale confidently without switching your current tools.
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More about Master Inbox

Master Inbox is the centralized reply management platform built for outbound teams and agencies who never want to miss a reply again no matter what tools or infrastructure they use.

Whether you're sending emails via Smartlead, Instantly, Apollo, and using any custom infrastructure or ones like Zapail, Scaledmail, or directly from Outlook, and Google, Master Inbox captures every reply including threaded, forwarded, and missed responses your sending platform often ignores.

It goes beyond just email:

✅ Direct LinkedIn integration brings all your DMs into one place ✅ Built-in CRM syncs like HubSpot keep your team aligned ✅ Faster reply handling than native "uniboxes" in your sending tools ✅ Powerful filters and smart tagging surface positive replies first ✅ Create Master Inbox accounts for clients with custom views that only show leads worth pursuing ✅ Unlimited team members means your whole team can collaborate without added cost ✅ Robust Webhooks & API allow you to send data anywhere, automate workflows, and trigger follow-up actions ✅ Integrated with tools like Heyreach, Expandi, Aimfox, and Prosp for seamless outbound syncing

Master Inbox is designed to plug into your current stack not replace it. If you’re serious about outbound and scaling client results, this is the tool that ensures you respond faster, close more, and never miss high-intent leads again.

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