A common term for UBE is "spam", although that term encompasses a wider range of intrusive transmissions. For instance, the term "spam" originated in the realm of Usenet news, not email. There, individuals cannot request or refuse bulk email, although some newsgroups explicitly permit or encourage its inclusion as a part of the group charter.

Unsolicited Bulk Email, or UBE, is Internet mail ("email") that is sent to a group of recipients who have not requested it. A mail recipient may have at one time asked a sender for bulk email, but then later asked that sender not to send any more email or otherwise not have indicated a desire for such additional mail; hence any bulk email sent after that request was received is also UBE.

SendBlaster is the best bulk email software to manage your mailing lists and set up email marketing campaigns in few easy steps. SendBlaster combines into one product the practicality of a mass email software with the flexibility of a web service. On the one hand you create newsletters and manage lists directly on your desktop: on the other you get a cloud email tracking service to handle reporting and improve your email campaigns.

It is generally used for legitimate mailings, such as for email list subscribers. Since the bulk email software usually sends email via direct send and via SMTP server, the use of a bulk email software for spam is almost impossible, because of the large amount of emails that are sent in a spam campaign. Bulk email software usually refers to a standalone software, while there are bulk email sending web-based services as well.

A large majority of global business and personal correspondence is conducted through emails these days. Moreover, researches have shown that almost 50 percent of men and women active on the internet like to share content through emails. What all this means is that email is one of the most untapped resources available on the internet. We understand the kind of potential that email marketing has for most entrepreneurs in the world. This is why we have collated some of the best email marketing software programs on the internet to help aspiring and successful entrepreneurs delve into the true scope of mass mailing.