I recently received an email says "..please send me a GDPR information about all my data you have assigned to this email.."
I collect the email address from a public domain (say GitHub) and technically I didn't store the email or name to my system. I send a cold-marketing email with a typical sales pitch about my product.
Now, what should I reply?
Does it violate any GDPR clause? If so then how I'll send marketing email!