E-mail marketing can play an important role in any online marketing plan. Due to the requirements of an e-mail marketing campaign, it is important to work with an established, reliable company. For example, a company must have quality servers in order to ensure that all of the e-mails you send out do not end up in the spam folders of your campaign’s recipients. By selecting the right e-mail marketing service, you can ensure that your campaign is as effective as possible.