If you want to promote your business through newsletters you need to purchase newsletter manager or campaign manager or bulk mailer.The service will help you capture leads,send your emails to your leads and maintain a log about the responses.Main problem with 3rd party newsletter managers are that all are not reliable enough to really send your leads the mails posted by you.A lot of mails get bounced and never reached the desired recipient.This has become a major cause behind the increasing number of unsuccessful online businessman.So my tumblr blog has again posted my findings for a reliable but cheap newsletter management service.
Deals with the topic of uncertainty and faults in systems