Email signatures are a useful tool for adding business and contact information automatically at the end of every email you send. In Yahoo Mail, add a signature in the Writing Email section of your email Settings. You can write a plain text signature with no formatting, or a rich text signature with font style, size and color options. You can also create lists and add links in your signature.
Create a Plain Text Signature
Mouse over the "Settings" menu icon resembling a gear, and click "Settings."
Go to the "Writing Email" section and click "Signature" to access signature choices. Choose "Show a plain text signature." A plain text signature is not formatted, so you cannot choose from among font style, size, color or any other options. Line breaks are retained, however.
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Type your signature into the text field below the signature drop-down menu. When you are finished, click "Save."
Compose a new message. Note that your signature is added automatically. Type your message above the signature.
Create a Rich Text Signature
Choose "Show a rich text signature" from the Signature drop-down menu in the Writing email section of your Yahoo email Settings. A text field displays with options for editing your signature. Click the "Select a font size" icon, resembling an upper and lower case "T," and choose both a font type and size. You can make your text bold or italicized using the Bold and Italicize buttons, represented by a "B" and an italicized "I" respectively.
Choose a color for your text. Highlight the text to color, and click the "Set text color" icon, which is an "A." Click the color you want.
Place a highlight behind your text by selecting the text to highlight and clicking the "Set text highlight color" button, which is an "A" with a shaded background. Click the color you want for the highlight.
Select your text and click the "Bulleted List" icon to create a bulleted list. You can instead create a numbered list in your signature by clicking the "Numbered List" icon. Indent your signature by clicking the "Indent More" icon, resembling a right arrow beside some lines.
Center-align your text by selecting it and clicking the "Align Center" icon resembling several centered lines. To return the signature to a left alignment, click the "Align Left" icon which looks like several lines aligned to the left.
Add a link to your signature by clicking the "Insert Link" icon resembling a paper clip. Type the address of your website and click "OK." Format your link and click "Save" to finish your signature.
Write a new email. Yahoo inserts your signature into the mail when you click "Compose." Type your email above the signature.