In the Message Format section, expand the drop-down of the Compose in this message format.Now, choose the Mail Format tab in the top bar.Click on the Tools button and select Options from the list.Launch the Outlook application in your system.At last, click on the OK button to save the changes.Choose Convert to HTML format or Convert to Plain Text format in this option.Now, scroll down to the Message Format section and click on the When sending messages in Rich Text format to the Internet Recipients field.After that, choose the HTML or Plain text in the Compose message in this format option.Now, choose the Mail option available in the left section.Click on the File button and select the Options.Open the MS Outlook application in your system.Fix Winmail.dat Outlook 2010, 2013, 2016 Using the MS Outlook Application As the issue arises because of the attachment file with Rich text format, the first option to fix the problem is by choosing another format. In these techniques, you need to perform some simple steps. You can resolve the winmail dat Outlook 2013 issue by adopting various methods. Let us see the answer to the query – how do I stop sending winmail dat files? How to Fix the Outlook Winmail.dat Email Attachments Issue? Now, you can resolve the problem by using other formats to compose the message. So, you are receiving winmail.dat instead of attachments in other email clients. The root cause of the winmail dat attachment issue is the incompatibility of other email clients with the Winmail.dat file. It is only attached with an email when you select the Rich Text format to create new emails. It allows other email clients to display the email in the same formatting as composed in MS Outlook. This file contains the formatting information of the message like bold, italic, highlight, etc. Outlook Winmail.dat attachment is a file attached with a newly created email. But, while choosing the Rich text format, the Winmail.dat attachment issue occurs often. The first two formats do not cause any issue in composing a new mail. MS Outlook creates a new email in either of the three formats: HTML format, plain text format, or rich text format.

Professional Solution to Resolve Winmail.dat Email Attachments in Outlook.Resolve Outlook Winmail.dat Issue Using Windows Registry Editor.

Fix Winmail.dat Outlook 2010, 2013, 2016 Using the MS Outlook Application.

How to Fix the Outlook Winmail.dat Email Attachments Issue?.

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