Two gmail address for one gmail account

When we create a gmail account we actually get two email address like this

the second one You probably don’t know
now you can save your GMail mailbox from spam with this trick

Give your @googlemail.com address to very important contacts and you can put that in the visiting card while keep the @gmail.com address for public use like u can place it on your blogs, website or in forums . Then set a Gmail filter such that all email messages with @googlemail.com in the header go a special folder so you will never miss important emails