Add your signature with your yahoo mail, when sending any mail, files or any other documents to denote of your identity of every time. If you have any problem to adding your signature in your yahoo mail than call yahoo support helpline number at +61-02-42048039 to get every solution of any issues related to yahoo mail.

2. When you use your Yahoo Mail for professional or personal reasons,
a signature at the end of each email can be a useful aspect of your
correspondence. An email signature can be in the form of your
name, your business name, your contact information, a
confidentiality notice, or even a saying or proverb that is relevant to
you. Yahoo support providing some tips that how add signature in
mail that you can send it every time in your mail by following a few
simple steps.

3. Create a Yahoo Mail account

4. Log on to your new Yahoo Mail account by going to the
Yahoo Mail homepage

5. Click the "Gear" on the upper right side of the screen next to
your name

6. Choose "Settings"

7. Now click on the "Writing email" tab

8. Select "Show a rich text signature”

9. Enter your desired signature in the blank box provided

10. Select "Save" once you have entered all of your necessary
information

11. Contact Us
Yahoo Support Australia
Email-id:- support@au.helplineyahoo.com
Phone:- +61-02-42048039
Address:- Po Box 392, Morisset NSW, 2264, Australia
Website:- http://au.helplineyahoo.com/contact.php