Immersive Reader in Outlook for the web and desktop allows you to adjust email text in a way that works best for you. Use Read Aloud to listen to emails being read out loud as each word is highlighted. Modify spacing, color and more for a comfortable, easy-to-process email experience.
Open an email in your Microsoft Outlook client version. Select the View tab and then click Immersive Reader.

The Immersive Reader menu will open and you will be able to make a selection that fits your needs best.

Select Read Aloud to have the text/email read aloud to you.
A bar will appear which allows you to rewind, play, pause,fast forward and more.

To close Immersive Reader, go back to your outlook ribbon and select Close Immersive Reader.
