Hi Aamer,
Which type of email you're mentioning?
Pls go to Administrator panel >> System >> Mail templates >> select the email you're having issue and check its template to make sure it's set with correct tag.
Your screenshot highlights the update notification email, which email that I can replicate this error on your site?
aamer66 Try this: {SITENAME} – {URL}
instead of: [SITENAME] – [URL]