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The plain text format does not support italic, bold, colored, or any other text formatting. The plain Text file format is supported by all email applications and you can set Microsoft Outlook to open messages that you receive in text format only. Overview: If you only want to receive plain text in Outlook emails, then, you have subsequently stumbled upon the right page. Outlook for Mac users also have the option to customize the reply header block.Modified: October 14, 2022| How to | 3 Minutes Reading This setting can be different for HTML and plain text messages. The only reply format option is to indent the original message (or not). To access the options in Outlook for Mac, click on Outlook in the top bar and choose Preferences from the menu then click Composing. Unlike Outlook for Windows, you can change the reply header format. The only option is to indent or not (with separate options for HTML or plain text message format). Outlook for Mac doesn't support changing the reply format to include line prefixes.
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Outlook 98 or later | Other Tools | Notes | More Information Outlook 2010, 2013, 2016 When you enable this option and reply to an HTML message, the quoted message is prefaced with a blue line. Note that the quote prefix character (usually ">") is applied only to plain text messages.
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