Step 1
After you finish creating your email signature, click “Save and Install” button under the signature preview:

Or if you have saved your signature priorly, hover over your signature on the dashboard and click “Use” button.

Step 2

Select the Gmail icon in the list of email clients.

Step 3

Under the Signature preview click the Copy signature button, which will save the signature code in the clipboard.

Step 4

Go to the lower left corner and click on the image of your account and then choose Settings:

Step 5
Then choose Accounts, go to the account you need and paste your own signature there:

Step 6
The last thing is to ensure it is saved:

Step 7
And now it's time to send an email.

We are done!
Your signature is ready. Enjoy!