They may have similar features, but these two have small differences here and there. Their prices are around the same ballpark and their security features are at par with each other. But here's where they differ.\r Gmail's strongest suit isn't its email service. It's the expansive wealth of productivity tools they have for collaboration. You can get tons of integrations and updates—all to your inbox. Plus, you don't need to be committed to their plans, as they charge monthly. \r But if you want to use advanced email tools and have better storage, Outlook is the way to go. It also has a low learning curve and has been used by most businesses for far longer. \r Their email system lets you organize your inbox and create meetings smoothly. It's great if you don't mind an annual commitment. Apart from that, it also has advanced admin and security support.