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The best alternatives to Signals are MailTag, Yesware, and Doubletick for Gmail.
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Best alternatives to Signals
APIs to make your app enterprise ready

  • Your all-in-one Gmail browser extension for email tracking, scheduling, and auto follow-up.

  • Yesware is an inbox productivity platform that transforms the way you send emails. Work smarter with our data-driven insights and tools such as Campaigns, Email Tracking, Templates, and more.

  • Doubletick is a Free and Unlimited email tracking tool for Gmail and G-Suite, adds double checkmarks ✔✔ to your mail if it is read by the recipient (Just like WhatsApp) and notifies you with real-time notificat...