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.
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.
You may get a warning about switching to Plain text.
If so, selectOKto continue.
The formatting toolbar disappears from the message pane.
Or pressAlt+(Command)+N.
In the message window, go to theOptionstab.
In theFormat Textgroup, turn off theHTMLtoggle to displayPlain.
If you are prompted to turn off HTML formatting, clickYes.