[andrejguran]

Most probably because of this: https://securitytoday.com/articles/2018/04/03/under-armor-ad...

Test your email here if it was leaked: https://haveibeenpwned.com/

Also from the email it seems someone created an account. This is not a marketing email

[glawre]

My initial thought was that it could be related to the leak, however my email doesn't exist in HIBP.

You're absolutely correct - someone - not me - has created an account using this unique email address.

[smarri]

Thanks for sharing these sites btw.