AT&T Landline Texting

Learn how to add contacts and groups as well as send instant and scheduled text messages.

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Adding a custom signature in the AT&T Landline Texting web application

Note: The character count for the custom signature is included in the 160 character limit for texts.

Note: Images cannot be uploaded to the custom signature.

  1. From the AT&T Landline Texting web application home page, click AT&T Landline Texting

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  2. Click Settings

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  3. Click Signature

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  4. Click the radio button to the left of “Include the signature below in my messages”. 

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  5. Click in the “Type a message” box and enter the custom signature.

    Image of steps 5 and 6.