If your campaign includes emails to a large number of accounts that are either no longer active or have not been used for a long time, alarm bells start to ring. Email services want to see senders of bulk email campaigns make an effort to send only emails that will be seen by their recipients, since this is something spammers are unlikely to care about.
3. Email converts better. People who buy products marketed through email spend 138% more than those who do not receive email offers. In fact, email marketing has an ROI of 3800%. That’s huge! And if you are wondering if social media converts even better, think again: the average order value of an email is at least three times higher than that of social media.
Push marketing is a proactive technique that enables e-marketers to "push" their product/service information to Web visitors or shoppers without their requesting it. Banner advertising, pop-up advertising, e-mail promotion, and spamming belong to push marketing. For instance, e-marketers can rent designated space from Internet service providers such as America Online or MSN for their banner or pop-up ads. Using animated graphics, appealing messages, and links, e-marketers try to lure visitors to their sites to buy their products or services. Many Internet users, however, find such ads annoying and employ software that blocks pop-ups and banner ads. <