Islam is a religion of peace, love and sheer believe in Allah. It is never imposed by force or strength and compelling others to enter into the circle of Islam is a sin.
Nowadays, there is a trend of forwarding e-mails containing Quranic Ayah and related events having subjects and messages like ... “forward it to as many people as you can and you will get a good news in a few or so days or else you will be destroyed”. Others claiming, “if you won’t forward it, you will not remain a true muslim”. Islam allows preaching but not compelling. So it is a request to all those people who forward such stuff that please stop doing so and save yourselves from committing sin.