Email Signature Software
for your small business

An average employee or business owner sends around 10,000 emails every year! Make every email you send count. Brand every email with your own custom HTML email signature.

Create Yours
  • The service your website provides is exactly what we were looking for and has been easy to use all around!
    - Chad Terrell, Dude Perfect

  • Great for business and easy to use. I have all my social media links and icons and website link to the signature. Easy to create and add to our emails.
    - Gabriel Tubella, Pretium Homes

  • I get comments on how great my email signature looks and I love knowing it looks that great for everyone who opens an email from my business. Thanks email signature rescue!
    - Loren Waller, The Food Werewolf

  • Email Signature Rescue was exactly what we needed to create multiple email signatures that look good and are easy to create and update. Would definitely recommend it to other small businesses.
    - Ellen De Vries, OSCAR Natural

  • We love our signatures. We have had many different signature solutions over the years and Email Signature Rescue has by far been the best solution we have found.
    - Marc Headley, Mode Systems

  • What Email Signature Rescue has done to take the heavy lifting out of email signature design is stellar. Keep on doing what you're doing.
    - David Schmeikal, Rivitt

  • Love, love, love the new email signature that I created for our business! It looks so professional, and conveys all of the relevant links for our customers to connect with us. Beyond happy!
    - Tracy Jones, Premier Roofing Co.

  • So easy to use and the results are incredible. I have never seen so many people notice my signature and compliment it.
    - David Malka,

email signature rescue

How to setup an email signature in Yahoo Mail

Install your HTML email signature in no time! Use our signature installer or follow our step-by-step guides to install your email signature in Yahoo Mail.

It's never been easier to create a new email signature for Yahoo Mail. Check out our beautiful email signature templates and easy to manage email signature software, that makes creating email signatures for Yahoo Mail a breeze.

Before you start

Before you start

You will need:

  • To be logged in to your Yahoo Mail account.
  • Your email signature file (.html file) open in Google Chrome or Mozilla Firefox, or be logged into your Email Signature Rescue account in Google Chrome or Mozilla Firefox with your email signature open in Full Screen Preview.
  • OR

  • Your email signature key.
  • Our web extension signature installer installed in your Google Chrome or Mozilla Firefox web browser.

Next Step

When you have completed the above steps, click on Get Started: Installation Guide below to follow our written installation guide with screenshots (recommended).

If you run into any issues during your HTML email signature installation in Yahoo Mail, please see the Troubleshooting FAQ for frequently asked questions, before contacting support through your member account.

Install: Web Browser Extension - Step-by-Step Guide

Install: Web Browser Extension - Step-by-Step Guide

Installing your email signature

gmail web extension installation step by step animated image

Step One

Login to your Email Signature Rescue account and from your dashboard click on Key next to your email signature. Copy the key code.

copy key from email signature rescue account

If you don't have an account, you should have had your email signature key emailed to you. Copy the key from your email instead.

copy key from email

Step Two

Open your Email Signature Rescue web extension by clicking the icon at the top right of your Google Chrome or Mozilla Firefox toolbar.

Once the web extension is open, select Yahoo Mail from the dropdown list.

select your mail client from the list

Don't have the web extension?

To install our web extension, simply select your web browser below and follow the prompts.

Install in Google Chrome Install in Mozilla Firefox Install in Apple Safari

Step Three

Paste your copied Signature Key into the box to the right and click Save Key.

paste key into web extension

Step Four

Click the Preview Signature button to ensure that your email signature is installed correctly.

gmail settings

Step Five

Click Force Update to ensure that the email signature gets pushed to your web browser.

click force update to push changes

Step Six

Now that your signature has been installed, log in to your Yahoo Mail account and press the compose button. You will see your email signature is automatically inserted into your email.

login to your yahoo mail account and compose a new email

All Finished!

That's it! Try your email signature now by composing an email in Yahoo Mail and emailing it to yourself, a friend or colleague.

Install: Step-by-Step Guide

Install: Step-by-Step Guide

IMPORTANT: If you receive an error message saying "Your signature is too long" then you will need to use our web extension instead. Select the Install: Web Browser Extension *NEW* instructions below and follow those steps.

Step One

Login to your Email Signature Rescue account and click edit on the email signature you are setting up. Once you are in edit mode, click on the full screen preview button to open your email signature in a full screen view.

click full screen preview

If you don't have an account, open your supplied HTML file in your web browser, like Chrome or Firefox.

Step Two

Once the Email Signature is open in your web browser, press CTRL + A (Command + A for Mac) to highlight the signature, then press CTRL + C (Command + C for Mac) to copy the signature. ctrl a to select all

Important: Do not use your mouse to select the area, only use Ctrl + A (or Command + A) as you may miss out on grabbing some of the code.

Step Three

Login to your Yahoo Mail Account.

Step Four

Once logged in, hover over the Cog icon on the top right of your screen. Select Settings

login to yahoo mail

Step Five

From the Settings menu, select Accounts then select your Yahoo Mail account.

yahoo select accounts menu

Step Six

Click inside your signature settings window and press Ctrl + V (Cmd + V for Mac) to paste your copied email signature.

paste your signature in yahoo mail

Step Seven

Scroll to the bottom of the page, click Save Changes and you're done!

All done!

That's it. Try your email signature now by composing an email to yourself or a friend!

compose a new email and test your signature

Troubleshooting: FAQ

Troubleshooting: FAQ

If you have tried our Step-by-Step Guide or Browser Extension instructions for installing your email signature Yahoo Mail and you run into any issues, please read through this troubleshooting guide before contacting Support for further help.

I get an error saying my email signature is too long.

Yahoo Mail used to apply a character limit restriction to their settings when installing email signatures. This has been removed and you shouldn't experience any issues when installing your email signature. If you do, please see our Web Browser Extension instructions to bypass the character limit restriction.

If I use the browser extension, will my email signature work with the Yahoo Mail iPhone/iPad app?

No. The way the browser extension works is that it injects the HTML from your email signature directly into the browser page, it does not save it to Yahoo Mail's settings. In order for your email signature to work in both the desktop and iPhone/iPad app versions of Yahoo Mail, you will need to reduce your email signature to under 10,000 characters and install it directly into Yahoo Mail's signature settings.

My email signature doesn't look right when I paste it

More than likely, you have used your mouse to highlight the html email signature file in the browser. Don't use your mouse, only use Ctrl + A (hold the Ctrl button and press A at the same time) to select all of your email signature. If you use your mouse, you may miss out on some of the vital code needed to make your signature work correctly.

I am composing an email and I can't click on any links or social media icons

In compose mode, most email programs won't allow you to use the links in your email signature. Check to see if your email signature has been installed correctly by sending a test email to yourself instead. The links and social media icons should work when you receive the email.

Still experiencing issues?

Find more answers to Yahoo Mail signature installation questions here.

If you're a member of Email Signature Rescue, you can submit a support ticket to our friendly support team through your member account by pressing the red help button. If you're not a member and need help creating or installing your HTML email signature, consider joining Email Signature Rescue for assistance.

Troubleshooting: Where do I find my email signature HTML file or key?

Troubleshooting: Where do I find my email signature HTML file or key?

Finding your email signature HTML file

  • If you are an Email Signature Rescue member and are logged into your account, you can download your HTML file directly from your Dashboard, by clicking on the Download button.
  • If you have been emailed your HTML file, go to the email and open the file in Google Chrome or Mozilla Firefox.
  • If you have your HTML file saved on your computer hard drive, navigate to where you have saved the HTML file and open with Google Chrome or Mozilla Firefox.

Finding your email signature key

  • If you are an Email Signature Rescue member and are logged into your account, you can get your key directly from your Dashboard, by clicking on the Key button.
  • If you don't have access to your account, you will need to ask your account admin to email your key to you.

Troubleshooting: I don't have an email signature HTML file or key

Troubleshooting: I don't have an email signature HTML file or key

If you don't have an email signature HTML file, consider joining Email Signature Rescue now and get creating! We offer over 20 professionally designed and tested email signature templates, tools and features to create and manage your email signatures online and a whole lot more.

Join Email Signature Rescue now

If you are using the web extension but aren't an Email Signature Rescue member and want to install your email signature, you can copy the HTML code from your file, select Advanced Settings > Enter Custom HTML Code instead of using a key.

Email Signature Software

Use our online Email Signature Software to create, customize and manage all your HTML email signatures. Learn More

Email Signature Templates

Customize over 20 professionally designed, coded and tested HTML email signatures using our online software. Learn More

Install in 45+ Email Clients

Install email signatures manually or automatically in over 45 major email clients and software. Learn More

Everything you need to create, customize and manage email signatures.

Over 80,000 email signatures created with Email Signature Rescue
  • Universal Music
  • Dude Perfect
  • Keller Williams
  • General Electric
  • University of Sydney
  • Remax
  • Century 21
  • Seattle University
  • UPS
  • Maps People
  • Auto Alert
  • The Collective
  • We Love to Travel
  • Amcal
  • Sales-Lentz Group
  • Oscar
  • Whites & Co
  • Apkudo

Email Signature Software for your small business.