I have found new way to prevent the spam mails into Gmail inbox. It’s very simple.
These are steps I have followed.
Go to -> Gmail --> (Top right corner) “Settings” -> Click on the “Accounts” (It has the Second Tab) - > Click on “Add another email address” (It may be YAHOO, GMAIL OR HOTMAIL mail ID) & Click on “verify” your account details as per the given process.
Make that verified account as a “default”. So Newly added mail ID) that should be your default account.
Whenever you compose a mail, you will see two mail addresses: The first one is “Your default account (Which is you made as a “default” mail ID)” the other one is: “Your previously Gmail account”.
You can send a mail any one of these mail ID. The advantage is, default mail id (Which is your new mail ID) is preventing your SPAM mails.
Let’s try this! :)