Not all information needs to be shared
A privacy newsletter is asking for your email address. You gave them your email address and password, which you'd reused 76 times.
A single breach from XYZ News will make you vulnerable to 76 further attacks. If your credentials have already been compromised, you can check haveibeenpwned. After entering your email address, they will let you know if you have been thrashed or pwned already.
If you've already been pwned, don't worry. Try checking those Apps & Websites and delete respective accounts. If you're lucky, you'll see the message “Good news – no pwnage found!”
Securing Our Emails
Your Email is your Identity. You wouldn't keep your Identity easily busted. Try to use more security focused Email services like Protonmail or Tuta. They have entry level and premium email services.
In any email service, there are chances of phishing attacks. Check for sender email addresses. google.com & google3.com are not the same! There might be fake login portals and malicious attachments lurking for your missteps.
Email Aliases
There are Email Alias services that route your personal email to an alias email for better privacy. Your Johndoe@email will be masked as doejohn-alias@email, persisting the same qualities of regular email. SimpleLogin, DDG Email Protection, Firefox Relay are some Alias services.
Password Managers
Even if you shuffle 100 emails for privacy, keeping a single password of “12345” as your main password will ruin all your previous efforts. Instead of remembering all your fragmented passwords. Install a password manager like Bitwarden or Protonpass. There are self hostable Vaultwarden instances that can be paired with Bitwarden App, which helps you use TOTP 2FA Authentication codes. Further increasing security!
Remember: your personal data belongs to you, not to every newsletter or sign-up form that asks for it. Take a few minutes today to lock down your accounts—your future self will thank you for it. Stay secure!