Check the email address for the sender’s name, signature, or organization
Search the email address in a search engine
Search the email address on social media platforms
Look up the domain name to identify the company or provider
Use the email address in professional networking sites
Search public people-search or directory websites
Check if the email appears in data breach or leak notification services
Use reverse email lookup tools
Review any profile links or usernames connected to the email
Ask mutual contacts if they recognize the address
Contact the sender directly and request their identity
Report suspicious or harassing emails to the email provider
If needed, contact local authorities for threats or fraud