The first autoresponders were created within mail transfer agents that found they could not deliver an e-mail to a given address. These create bounce messages such as "your e-mail could not be delivered because..." type responses. Today's autoresponders need to be careful to not generate e-mail backscatter, which can result in the autoresponses being considered E-mail spam.
In many cases, outbound techniques can get someone to think about you even if they haven’t thought about you yet, since many of the methods you use should have more of a “wow” factor to make your company stand out. Outbound communication is often highly targeted, with a call-to-action that is very obvious. As a result, good outbound marketing can push someone through the funnel at a faster rate, assuming they are closer to being ready to buy.  Inbound alone often does not drive someone to buy. Outbound gives them that extra nudge they need to drive a lead down the funnel.

The CAN-SPAM Act of 2003 was passed by Congress as a direct response to the growing number of complaints over spam e-mails.[citation needed] Congress determined that the US government was showing an increased interest in the regulation of commercial electronic mail nationally, that those who send commercial e-mails should not mislead recipients over the source or content of them, and that all recipients of such emails have a right to decline them. The act authorizes a US $16,000 penalty per violation for spamming each individual recipient.[17] However, it does not ban spam emailing outright, but imposes laws on using deceptive marketing methods through headings which are "materially false or misleading". In addition there are conditions which email marketers must meet in terms of their format, their content and labeling. As a result, many commercial email marketers within the United States utilize a service or special software to ensure compliance with the act. A variety of older systems exist that do not ensure compliance with the act. To comply with the act's regulation of commercial email, services also typically require users to authenticate their return address and include a valid physical address, provide a one-click unsubscribe feature, and prohibit importing lists of purchased addresses that may not have given valid permission.[citation needed]
Coupon: Unlike the job application, you probably know very little about someone who has stumbled upon one of your online coupons. But if they find the coupon valuable enough, they may be willing to provide their name and email address in exchange for it. Although it's not a lot of information, it's enough for a business to know that someone has interest in their company.
Step Three: Following that, an average of ten to nineteen emails are then automatically sent to the subscriber, most often with several days between each email send. The further the sequence gets, the longer the space between emails is. For example, within the first three or four auto responder emails, there may only be a day or two between each email send.However, as you get into the latter emails, it is common to leave a week between email sends so as not to encourage the subscriber to become frustrated and mark you as spam or unsubscribe from future mailings.
First, act as though you’re a prospect making their way to your business’s landing page. Start by ensuring that the links to your landing page are working, wherever they may be — email, PPC networks, sponsored social media posts, etc. Are they driving you to the landing page that they’re supposed to? Does everything look the way you intended on every browser?
"Why aren't millennials moving?" The subject line of this email campaign reads before citing interesting data about relocation trends in the U.S. Trulia doesn't benefit from people who choose not to move, but the company does benefit from having its fingers on the pulse of the industry -- and showing it cares which way the real estate winds are blowing.
If links and looks are set, begin interacting with the page. Abandon it, adjust the window size, convert. Are error messages appearing when they’re supposed to (if, for example, you don’t input all the form’s required info)? Is your CTA button working? If you abandon the page, are you retargeted with ads? When you resize the window, does your landing page respond accordingly?