Most of us are very curious to know a method to send anonymous emails to our friends for fun. But the question is, is it possible to send anonymous emails in spite of the advanced spam filtering technology adopted by email service provides like Gmail, Yahoo etc?
The answer is YES, it is still possible to bypass their spam filters and send anonymous emails to your friends. For example, you can send an email to your friend with the following sender details.
From: Bill Gates
The art of sending this kind emails is known as Email Spoofing. One of the easy way to send a spoofed email is by using our own local SMTP server. In the past, I have tried SMTP servers like QK SMTP server. This method used to work successfully in those days, but today it has a very low success rate since Gmail and Yahoo (all major email service providers) blocks the emails that are sent directly from a PC.
So, in this post I have come up with a new way to send anonymous emails (spoofed emails) that has a better success rate. If you have to successfully send an anonymous email or spoofed email, you should send it using a relay server.
What is a Relay Server?
In simple words, a relay server is an SMTP Server that is trusted by Google or Yahoo as an authorized sender of the email. So, when you send an email using a relay server, the email service providers like Yahoo and Gmail blindly accept the emails and deliver it to the inbox of the recipient. If the SMTP server is not authorized, Google and Yahoo will reject all the emails sent from this SMTP server. This is the reason for which using our own SMTP server to send emails fail.
So What’s Next?
Now all we have to do is, find a trusted SMTP server to Send Spoofed Emails. Usually all the emails that are sent from web hosting providers are trusted and authorized. So, you have to find a free web hosting provider that allows you to send emails. But, most of the free Web Hosts disable the Mail feature and do not allow the users to send emails. This is done just to avoid spamming. However, all the paid hosting plans allow you to send any number of emails. Once you find a hosting service that allows to send emails from their servers, it’s just a cakewalk to send anonymous emails. All we have to do is just modify the email header to insert a fakeFrom: address field into it.
I have created a PHP script that allows you to send emails from any name and email address of your choice. Here is a step-by-step procedure to setup your own anonymous email sender script: