The best alternatives to Superhuman are Gmail, Canary Mail, and Mailflow. If these 3 options don't work for you, we've listed a few more alternatives below.
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Haggle — A CTA buyers want to click, when they aren't ready to demo
Gmail is a free email service developed by Google. Users can access Gmail on the web and using third-party programs that synchronize email content through POP or IMAP protocols. Gmail started as a limited beta release on April 1, 2004 and ended its testing phase on July 7, 2009.
Outlook helps you stay connected and organized at the office and at home. It brings the best of Microsoft 365 together — with easy access to emails, files, calendar events, and contacts across all your accounts so you can quickly get things done.