How to change message to html format in Outlook?
Sometimes you need to change your Outlook message format in order to meet your recipient’s application supports as all message applications are different. "HTML is the best format to use when you want to create messages that are similar to traditional documents, with various fonts, colors, and bullet lists" --- Microsoft Office Outlook. The following article will tell you how to change Outlook message to html format.
Change a message format you send to html in Outlook
Change all message formats you send to html in Outlook
Change a message format you send to html in Outlook
1. Open the new e-mail editing window by clicking "Home" > "New E-mail".

2. When the email editing window popping up, click "Format Text" > "Aa HTML". See screenshot:

3. Now, compose your email, then send it.
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Change all message formats you send to html in Outlook
1. Go to the "File" tab, click "Options". See screenshot:

2. In the "Outlook Options" dialog, select "Mail" from the left pane. In the right pane, under "Compose messages", select "HTML" from the drop-down list, and finally click "OK" to close the dialog.

Note: For the message you reply to, Outlook keeps the format of the original message. If you want to change the format, please do as the above method "Change a massage format you send to html in Outlook" told.
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