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Super easy HTML
email signatures

Using the Email Signature Rescue Installer App for Mac OS

Want a quick and easy way to install your new Email Signature Rescue HTML email signatures in your MacOS email client? Well now there is. Introducing our new MacOS HTML Email Signature Installer App, featuring auto-update functionality.

email signature installer app

How does it work?

Firstly, download our signature installer app for Mac OS X. Once downloaded, run it and select your email client and mail account, then insert your signature key. Our app will then use the signature key to pull in your email signature and install it in your selected email client for you.

Whenever the installer app detects a change to the signature from your ESR dashboard, it will automatically push an update to your e-mail client meaning you'll never have to re-install your signature again.

Which email clients are supported?

  • Apple Mail
  • Outlook for Mac 2019
  • Outlook for Mac 2016
  • Outlook for Mac 2011
  • Mozilla Thunderbird
  • Postbox

Apple Mail is supported from versions macOS El Capitan 10.11 through to the latest macOS Catalina 10.15.

Download it now

Get your hands on the latest version of the MacOS Installer App.

18,600+ Downloads

Installing your email signature

  1. Copy your signature key.
  2. Click the ( + ) icon to add a new email signature to the installer app.
  3. Select your email client.
  4. Select your email account.
  5. Paste your signature key.
  6. Select your optional signature defaults for replies and forwards.
  7. Click Install Signature.

How to automatically update your email signature

Once your email signature has been installed into the installer app, any changes made to your email signature from the Email Signature Rescue dashboard will automatically be detected by the app and then update within your email client. Depending on which email client the email signature is installed in, you may or may not be prompted to restart your email client.

The email signature must be installed via it's signature key and the installer app must be running in order for automatic updates to work.

FAQ's and troubleshooting

Which email clients are supported?

Our macOS Installer App currently works with the following email clients:

  • Apple Mail
  • Outlook for Mac 2019
  • Outlook for Mac 2016
  • Outlook for Mac 2011
  • Mozilla Thunderbird
  • Postbox

Apple Mail is supported from versions macOS El Capitan 10.11 through to the latest macOS Catalina 10.15.

Which operating systems are supported?

The macOS installer app supports the following versions of mac OS X:

  • OS X El Capitan – version 10.11
  • macOS Sierra – version 10.12
  • macOS High Sierra – version 10.13
  • macOS Mojave – version 10.14
  • macOS Catalina – version 10.15

My email signature isn't inserting when I compose an email

If your email signature isn't inserting when composing a new email, there's two things you should check.

Make sure your email signature is installed by going to your email client's settings or preferences. If your email signature is not installed then you should make sure everything in the app is correct. If it is and the app isn't installing your signature, please get in touch with our friendly Support Team by clicking the Help button within the app.

If your email signature IS installed, but isn't inserting into your emails, you'll need to set it as your default email signature for the account which can be done when installing your email signature into the app.

If none of the above helped you resolve the issue you're experiencing, please get in touch with our friendly Support Team by clicking the help button within the app.

My email signature isn't automatically updating when making changes from my ESR account

Your email signature will only automatically update if have installed it via your signature key. If you have installed the email signature via your HTML file then your signature will not automatically update and will require you to re-install it with the updated file after making changes.

If you have your signature key inserted, you should check that the key is correct and current with your email signature in your account. Go to your dashboard and ensure the key matches the one installed. If it does, go to the installer app and click Preview Signature, if the signature has updated in the preview but not within your email client then let us know and we'll look into the issue further.

Can I use your installer app if I'm not an Email Signature Rescue member?

Of course! You can still use our installer app as it's free to everyone.

If you already have a HTML email signature file, then you can select this option when installing your email signature instead of using the signature key.

Of course if you're not a member then your email signature won't automatically update when you make changes, but if you choose to become a member then you will be able to do this and make your life much simpler.

If you are interested in our software you may like to sign up here and try it out. We offer a 7-day money back guarantee on all plans but we're sure you'll love it!

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

No Design Skills

No design skills required. Your signatures will look as beautiful as our examples. 20 easy to customize templates included.

No Tech Knowledge

Whether you’re a solo business owner, hairdresser, real estate agent or dog walker, anyone can create and install a signature!

Works With

Install in nearly all major email clients including Gmail, Apple Mail, Outlook, iOS and more. 50+ email clients, apps and software supported.

Reliable & Tested

We refine our HTML code and conduct extensive testing regularly to ensure it is industry-leading and works across all major email clients.

Save Time

Create, customize, edit, manage and deploy HTML email signatures from one central, easy to use system.

Save Money

No expensive IT staff, developers or designers needed. From signature design, to installation and support, we take care of it all.

Easy Duplication

10, 20, 30 or 100 staff? No worries! Duplicate signatures you’ve already created from the Dashboard to create multiple signatures quickly.

Support if you need it

Hit a snag? Help is only an email away. We're here for help with any design, installation and technical issues, should you need us.

Email Signature Software for Businesses and Designers.