As analternative, send plain-text emails that are readable by any computer and email client.

In the message window, go to theFormat Texttab.

In theFormatgroup, selectPlain Text.

A new email in Outlook.

you might alsochoose a default format for composing new messages in Outlook.

Compose the message and selectSend.

SelectMore Options(denoted by 3 dots), then chooseSwitch to plain text.

Selecting the Format text tab in Outlook.

You may get a warning about switching to Plain text.

If so, selectOKto continue.

The formatting toolbar disappears from the message pane.

Changing the text to plain text in Outlook.

Or pressAlt+(Command)+N.

In the message window, go to theOptionstab.

In theFormat Textgroup, turn off theHTMLtoggle to displayPlain.

Creating a new message in Outlook.com.

If you are prompted to turn off HTML formatting, clickYes.

Selecting to switch email to plain text in Outlook.com.

A confirmation about switching to plain text in Outlook.com.

The formatting bar has disappeared by switching to plain text in Outlook.com.

A new email message in Outlook for Mac.

Viewing the options tab in Outlook for Mac.

A warning about switching to plain text in Outlook for Mac.

An email that has been set to plain text format A warning about switching to plain text in Outlook for Mac.