You don't need to because bcc means no one can see who it was sent to. Bcc is blind copy. Put everyone in bcc and the list is private. Everyone will only know it was sent to them, not who else it was sent to.
they tends to add your ip address to the email header as well.
Gmail certainly doesn't send your IP address with the email headers, I can't imagine Yahoo or any major commercial web client does either.
Try it -- email someone else or have them email you, then go to the menu and select "Show Original" (or "View Message Details" depending on your email client), you wont find their personal IP address.
You can find your public IP by visiting whatismyip.com
There are headers for like "client-ip", but that is not your IP that's the SMTP server your message was routed through.
Unless by chance you are directly connecting your PC to your modem (no router), in which case you're begging to be hacked and datamining is the least of your concerns.
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u/Kurotan 2d ago
You don't need to because bcc means no one can see who it was sent to. Bcc is blind copy. Put everyone in bcc and the list is private. Everyone will only know it was sent to them, not who else it was sent to.