Click the message body.
How to use text zoom in outlook. If you are an Outlook users and want to make Zoom meetings use the Schedule tile in the Zoom Client. Sign in to the Zoom web portal. Click the Schedule a Meeting button.
In the navigation panel click Meetings. Search for Zoom for Outlook or switch to the Admin-managed tab to view add-ins made available by your account admins. If your Outlook is zooming in too much by default ie when you initially open the application or click on an email follow these steps.
1 Create a new message. On the Message tab in the Format group click Zoom. Use this slider to adjust the zoom in the reading pane.
In the Zoom dialog box under Zoom to click 100 for the default size or use the other options to specify a custom zoom. Sobald Sie andere E-Mails öffnen ist dort die Standardgröße eingestellt. Use the ribbon controls to change the zoom.
When using Outlook on the web in Microsoft Edge or Chrome do one of the following. To zoom in press CtrlPlus sign repeatedly until you hear the zoom in percentage you want. To do this for your own account open Outlook and click the icon or menu for Add-ins.
Outlook will open a browser to manage your add-ins. Alsoanother method is mentioned by the technet user in the link below - BigMeanCat. The zoom level of the message view can be changed in the ribbon.