Change font sizes in Outlook for Mac

With Outlook open on your Mac, take the following steps to set your default font settings for text in emails. 

Specify your preferred Preview font

1. In the menu bar, open the Outlook drop-down menu and select Settings.

2. In the left-hand side choose Reading.

3. Scroll down, under Preview font for message select the appropriate font.

   

Specify your font preferences

1. In the menu bar, open the Outlook drop-down menu and select Settings.

2. In the left-hand side choose Composing.

3. Choose the message type for which you will change the Font settings. For Composing (New mail) and Reply or forward, click on Select... button to proceed.

   

4. Use the displayed Font panel to select from the available standard options. Typical selections are simply Font and Size.  
   

5. Select OK to apply your changes and return to Outlook.

Change font size for all messages in a folder

1. Select a message from your Inbox or other folder, such as Sent or Drafts.
2. Under Format, select Increase Font Size or Decrease Font Size.
   
   The changes will be applied to all mail in the selected folder or subfolder. When you navigate away from the folder, its text will revert to the default size.

Change font size in a new email

As you are composing an email you can make its text larger or smaller. After you send the message the default size is reinstated.  

1. Place the cursor in the body of the email message you're composing.
2. Select Format > Zoom.
   
3. Select a zoom percentage or enter a custom percent.
   

In Outlook, you have the option to:

Set text display size  |  Set default font for messages  |  Change font size for all messages  |  Change font size in a new email

Specify main display font size

1. Go to Outlook > Settings > Fonts.
2. Move the slider left or right.
   
    

Choose a default message font size

You can change the default font for incoming and outgoing messages:

1. Select Outlook > Settings > Fonts.

2. In the Default fonts section select the Font button located next to the composition style you want to edit. For example, select Font next to New mail if you intend to specify a default text size for all new messages.

   

3. Use the Advanced tab to specify scale, spacing, and other effects.

   

4. Select OK to save your changes.

5. Repeat these steps for each composition style you want to modify. 

Change font size for all messages in a folder

1. Select a message from your Inbox or other folder, such as Sent or Drafts.
2. Under Format, select Increase Font Size or Decrease Font Size.
   
   The changes will be applied to all mail in the selected folder or subfolder. When you navigate away from the folder, its text will revert to the default size. For more permanent adjustments, you can change the text size of the sidebar, message list, and reading pane and change the font size of incoming or outgoing messages.

Change font size in a new email

As you are composing an email you can make its text larger or smaller. After you send the message the default size is reinstated.  

1. Place the cursor in the body of the email message you're composing.
2. Select Format > Zoom.
   
3. Select a zoom percentage or enter a custom percent.