How and to whom can I report infected links?

I want to report infected links sent to me by email because I want to be sure that nobody else gets infected, too.

And also make sure security companies (like yourselves) be able to analyse this links for possible new malware.

submit the url to virustotal

then submit the url from virustotal here

https://forums.comodo.com/av-false-positivenegative-detection-reporting/submit-malware-here-to-be-blacklisted-2014-no-live-malware-t100707.0.html