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New Outlook vs. Classic Outlook: Love It or Hate It?

By Zachary Goriszewski Posted March 25, 2025

Microsoft has introduced the new Outlook, a modernized version of its classic email client, sparking debate among users. While some appreciate its streamlined interface and cloud-first approach, others remain loyal to the classic Outlook due to its robust offline capabilities and legacy features.

So, should you embrace the change or stick with what’s familiar? Let’s break it down.

New Outlook (Microsoft 365): A Cloud-Centric Evolution


What’s New?

  • Modern Interface – A cleaner, web-centric look.
  • Improved Search – Faster and more accurate results.
  • Seamless Microsoft 365 Integration – Connects with Teams, OneDrive, and To-Do.
  • AI Features – Includes Copilot for email drafting and improvements.
  • Faster Performance – Quicker load times and effortless account switching.
  • Mobile Optimization – Works better across multiple devices.

What’s Missing?

  • Limited Legacy Support – No public folders and restricted PST file support.
  • Offline Limitations – Designed for an always-online experience.
  • Licensing Requirements – Each mailbox requires its own Microsoft 365 license.

Classic Outlook: The Traditional Powerhouse


Why Stick With It?

  • Familiar Interface – The ribbon layout we all know.
  • Offline Functionality – Work without an internet connection.
  • Legacy Support – Compatible with PST files and COM add-ins.
  • Standalone Licensing – Available as a one-time purchase in the Office suite.

Downsides?

  • Slower Load Times – Especially noticeable with multiple accounts.
  • Less Integration with Microsoft 365 – Lags behind in cloud connectivity.
  • Not Mobile-Friendly – Lacks the optimizations of New Outlook.

Which One Should You Choose?


Go for New Outlook If…

  • You prefer a modern, cloud-based experience.
  • You rely on Microsoft 365 apps like Teams and OneDrive.
  • You want AI-powered features and faster performance.
  • You frequently switch between devices, including mobile.

Stick with Classic Outlook If…

  • You need offline access.
  • You depend on legacy features like PST file support.
  • You have add-ins that don’t work with New Outlook.
  • You prefer the traditional interface.

What’s Next?


Microsoft is pushing forward with New Outlook, and support for Classic Outlook will eventually be phased out.

  • The opt-out phase begins in April 2026, meaning users will gradually be transitioned.
  • Until then, you can still switch back to Classic Outlook by going to:
    • File > Options > General > New Outlook options
    • Uncheck “Automatically switch me to new Outlook”

Need Help Transitioning? Contact LRS Small Business Tech Services!


Switching to New Outlook can be a big change, and ensuring a smooth transition for your business is crucial. Whether you need migration assistance, training, or troubleshooting, LRS Small Business Tech Services is here to help.

Contact us today to discuss your Outlook transition and find the best solution for your business!