What should you do if you receive a suspicious email asking for personal information?

The best action to take when receiving a suspicious email like the one described is to treat it as a phishing attempt.

• Reply with my phone number and postal address, I want the 5 million dollars: This is incorrect. Providing personal information to an unverified source can lead to identity theft or financial fraud.
• Forward the email to friends, because sharing is caring: This is incorrect. Forwarding a scam email can expose your friends to the same risk.
• Report the email as spam and delete it: This is the correct action. Reporting helps email providers identify and block similar malicious emails, and deleting it removes the threat from your inbox.
• All of above: This is incorrect, as the first two options are unsafe.

The correct option is to report the email as spam and delete it.

The final answer is $\boxed{\text{Report the email as spam and delete it}}$.