How do you prevent people from entering in the wrong address, and thus a random person receiving your emails?
If it's just a one-off receipt, I'll delete it. If that business I never had any business with starts spamming me, then I mark it as spam. Second receipt, pisses me off, a third receipt from the same company gets marked as spam etc. If you want to send more than one email, ask for permission.
Unfortunately I have a few technology-challenged acquaintances still using my common-ish firslast@ gmail, but once I get them switched over, everything that inbox receives will automatically be marked as spam.
If it's just a one-off receipt, I'll delete it. If that business I never had any business with starts spamming me, then I mark it as spam. Second receipt, pisses me off, a third receipt from the same company gets marked as spam etc. If you want to send more than one email, ask for permission.
Unfortunately I have a few technology-challenged acquaintances still using my common-ish firslast@ gmail, but once I get them switched over, everything that inbox receives will automatically be marked as spam.