Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to keep your email from spammers [title] Limit how often you give out your email. [step] Don't give your email address to untrusted or unknown entities. From retail rewards programs to weekly newsletter services, everyone wants your email address.

Ending1: When you put your email address out there, remember that you don't know exactly where it's going. Don't give your email address to just anyone! [title] Don't forward chain emails. Ending2: Face it, your emails are not likely to be returned. [title] Hold on to your email address if you are dealing with tax fraud. Ending3: So try not to give your email address to anyone you don't know. [substeps] Always remember to limit the time you give out your email address. Ending4: [title] Limit your messages from sites you don't truly trust. [step] If you are really bothered by spam in emails you don't actually trust, think about hiding your email address around a really trustworthy server.

Answer format: ending1/ending2/ending3/ending4