Hope this email find you well means

A classic phrase!

When someone writes "I hope this email finds you well," they're expressing a polite and friendly sentiment. It's a way of saying:

In essence, it's a way of breaking the ice and setting a positive tone for the email that follows. It's a common phrase used in business and personal correspondence, especially in formal or professional settings.

So, if someone writes "I hope this email finds you well," you can respond with a simple "Thank you, I'm doing well" or "Thank you, same to you!" to acknowledge their kind sentiment.