How to differentiate whether the email you received is spam or not?

1. Check from the sender, that’s the email address sent from. Generally, if it is from a real business, you can find other related information in the email. Otherwise, if this email has scammed somebody before, there should be a record in Google search results. You can go directly to the website by copying the part right after the @ symbol in the email to verify whether it is a real business. A scam email may point to an illegitimate website with fake content, a nonexistent website, or a website that can't be opened. Note that hackers can send from others' email addresses but can't receive from the spoofed sender's email address. Email like that generally includes an unknown attachment. If it's like that, reply directly to the email,  and the email owner will know their address is being used by someone else. The hacker's purpose is to seduce you into opening the attachment, not replying to the email. If you opened the attachment by mistake, just disconnect the internet and reinstall your computer OS to stop the virus from infecting your business or stealing your business's privacy.

2. Check from the content, the more generic the inquiry, the bigger the percentage of spam. A clear sign of the spam email is the content hasn't a specialized reference for the product. They are just asking for your price list, catalog, delivery time, etc. Suppose the sender of the email is a hacker. In that case, they generally including an attachment in Zip, pdf, exe, html file, please don’t open it, and only open pdf, jpg, word, excel files until you verified the sender is a real business such as email address can direct to an authentic website. 

3, Sender using free emails such as Hotmail, Gmail, Yahoo.com, 163.com can be a real business, as many business owners prefer free emails for more privacy. You can verify it through the contact information in the email footer and the email content. Real businesses show expertise in writing about their products, expressing their buying requests, and crafting email content that is particular and precise. 

4. Promotional emails may not be spam emails. As far as promotional emails are related to authentic products, services, not drugs, and criminals, the sole purpose of the sender is to solicit buyers, which is like soliciting buyers on the street. If senders send the email to the right one, most probably they’re sending from an email campaign.