How to add and remove a horizontal line in Outlook?
Do you need to organize sections in a lengthy email? Adding horizontal lines can help make your message clear and visually appealing. This article provides simple tricks to effortlessly insert and remove horizontal lines in your Outlook emails, enhancing the structure and readability of your content.
Add a plain horizontal line in an Email Message
Add a rich-style horizontal line in an Email Message
Remove plain/rich-style horizontal lines in an Email Message
Add and remove a graphic horizontal line in an Email Message
Add a plain horizontal line in an Email Message
The easiest way to insert a horizontal line is keyboard shortcuts of the "Hyphens" key and the "Enter" key.
First of all, place the cursor at the position where you will add a horizontal line, and then press the hyphens key (-) three times, and then press the "Enter" key. At last, you will get a plain horizontal line in the email message.
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Add a rich-style horizontal line in an Email Message
The following steps will guide you to insert a rich-style horizontal line in an Email message.
Step 1: Click the 
"Table" button in the "Paragraph" group under the "Format Text" tab, and then click the "Borders and Shading" item in the drop-down list.
Step 2: In the Borders and Shading dialog box, select line styles, configure the line color and line width under the Borders tab based on your needs, and click the "OK" button to finish configuring.
Step 3: Place the cursor at the position in which you will insert a horizontal line.
Step 4: Click the "Table" button in the "Paragraph" group again, and then click the "Bottom Border" item in the drop-down list.
Now a rich-style horizontal line is inserted in your message at a glance.
Remove plain/rich-style horizontal lines in an Email Message
The following steps will help you remove the plain or rich-style horizontal lines in the Email message.
Step 1: Place the cursor above the horizontal line that you will remove as the below screenshot shows.
Step 2: Click the "Table" button in the "Paragraph" group under the "Format Text" tab.
Step 3: Click the "No Border" item in the drop-down menu.
Then the horizontal line is removed immediately.
Add and remove a graphic horizontal line in an Email Message
There is another kind of horizontal line you can insert in the Email message: a graphic horizontal line.
Step 1: Place the cursor at the position where you will insert a graphic horizontal line.
Step 2: Click the "Table" button in the "Paragraph" group under the "Format Text" tab.
Step 3: Click the "Horizontal Line" item in the drop-down list.
Then a graphic horizontal line is added at the place you assigned in Step 1.
To remove this kind of graphic horizontal line, just select the horizontal line and press the "Delete" key.
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