How can I track which vendors share my email data with others?

Email marketer from Reddit shares that they use plus addressing (e.g., myemail+vendor@gmail.com) or domain aliases to create unique email addresses for each vendor. If they start receiving spam at a specific address, they know which vendor shared their data.

Email marketer from Email Geeks shares that he changed his gmail.com account to a personal domain (fernandofigaro.com) and created extensions like fbf+service1@fernandofigaro.com to sign up for newsletters or create e-commerce accounts to track vendors that shared his data with others.

Email marketer from Privacy.com suggests using burner email addresses in combination with virtual credit cards. This approach allows you to not only track which vendors are sharing your email data but also limit financial exposure if a vendor's security is compromised.

Email marketer from 419eater forum suggests using a honeypot email address to bait spammers. This address is never used for legitimate purposes, so any email received at that address indicates unauthorized sharing or selling of data.

Email marketer from Slashdot suggests owning your own domain name. This gives you complete control over email addresses, allowing you to create unique addresses for each vendor and easily track data sharing.

Email marketer from Email Geeks explains that on his personal domain, anything before the @ goes to his mailbox, so he uses a different address for everything he signs up for - normally the name of the service to see if data is shared. He notes that his "main" address has already found its way onto some dodgy lists.

Email marketer from Mailfence suggests using encrypted email services with unique addresses for different vendors. While encryption primarily protects content, using unique addresses helps identify the source if you receive spam or phishing attempts.

Email marketer from Reddit suggests using a password manager that generates unique email addresses for each site. This approach helps track which services are sharing your email address if you start receiving spam.

Email marketer from Superhuman details that their Email Insights feature helps track who is reading your emails and when. While not directly tracking data sharing, it provides insights into email activity that can indirectly suggest if a vendor is forwarding your information.

Email marketer from Stack Overflow explains the strategy of using unique email addresses (e.g., vendorname@example.com) when signing up for services. This allows you to identify the source if you receive spam or unsolicited emails at a specific address.

Email marketer from PrivacyTools.io recommends using a combination of privacy-focused email providers, alias services, and password managers to create unique and trackable email addresses for each vendor you interact with.

Expert from Word to the Wise discusses tactics of email address harvesting where companies intentionally acquire email addresses from various sources, which are often then shared or sold. To combat this, it is recommended to use distinct email addresses for different interactions. Monitoring which addresses receive unwanted mail can help pinpoint the source of the leak.

Expert from SpamResource.com explains that using a unique email address for each vendor is a good method. Using subdomains or plus addressing (if supported by your email provider) can help to filter mail and quickly determine who shared or sold your information if you start receiving unsolicited emails.

Expert from Email Geeks explains that she uses tagged addresses for everything. She highlights that data sellers don’t respect that and have stripped tags off her address, found it elsewhere, or created fake data for her.

Documentation from AnonAddy explains their open-source email forwarding service. You can create unlimited aliases and track which ones are receiving spam, thus identifying the source of the data leak.

Documentation from Firefox Relay explains their service, which allows you to create email aliases that forward to your real email address. If you start receiving spam at a specific alias, you know which site sold your data.

Documentation from SimpleLogin explains the use of email aliases to protect your primary email address and track which services are sending you emails. You can create a unique alias for each service and easily identify the source of spam or unwanted emails.

Documentation from DuckDuckGo explains their Email Protection service, which provides a private DuckDuckGo email address that forwards emails to your personal address while removing trackers. This can help identify which senders are tracking you and potentially sharing your data.