How do I add a promo banner to the email signature?

Under the images tab in the generator you have the ability to upload your company logo and a promo banner to your email signature.

Accepted file types are .png, .jpg, .jpeg, .gif

335 pixels wide by 100 pixels high

The promo banner pixel size is set so that it appears at a decent size on mobile and desktop and so any file uploaded has to be 335 pixels wide by 100 pixels high and under 1 MB in size.

In the Mirosign generator, go to the images tab and then the lower section on the left shows you where you can upload your promo banner image and also add a link for this image.

Anything can appear in this banner graphic, including special promotions, a call to action, awards or accreditations logos.

If you do not feel confident you may ask someone with design skills to produce this or you can use any program to produce your pixel banner, but here are some we recommend:

Adobe Photoshop

This is the best software to use, if you have it. You can download our Adobe Photoshop .PSD template here:

Adobe Creative Cloud Express

This is free and has templates that may help you


A free and open source image editor.


A browser based Photo editor


After if you have produced your pixel banner return to and click on the image tab to upload your banner.

Add a URL banner link

In the banner link box below, add a URL link for the banner image. This will be the URL of the webpage that people will visit if they click on the banner. Please choose very carefully as this URL cannot change after staff have installed the email signature in their own email clients.

Please note that after staff have installed the banner link will be set and cannot change, unless staff reinstalled, but the banner graphic image can change without staff having to reinstall.

Changing the promo banner image

You can login and change the promo banner image at any time. Remember the size has to be 335 pixels wide by 100 pixels high.

Remember to use the same file type as originally uploaded, one of these .png, .jpg, .jpeg, .gif.

If you are paying for the Mirosign team generator and the same file type is uploaded then all staff’s email signatures will automatically update without having to reinstall.

Unfortunately if you change the link changes then staff will have to reinstall their email signatures to make sure the promo banner goes to the new link.

How do I change my promo banner?

The benefits of using the banner

Using the email signature promo banner can help with your business marketing see this article here

Email Signature as an Email Marketing Tool and How To Create a Perfect One

Any further questions?

If you’re still having issues using Mirosign or we haven’t answered your question here, please get in touch and we can help you in person.

Contact us