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.
Cost per click advertising (e.g. AdWords, Yahoo! Search Marketing) overcomes this problem by charging advertisers only when the consumer clicks on the advertisement. However, due to increased competition, search keywords have become very expensive. A 2007 Doubleclick Performics Search trends report shows that there were nearly six times as many keywords with a cost per click (CPC) of more than $1 in January 2007 than the prior year. The cost per keyword increased by 33% and the cost per click rose by as much as 55%.
Lead Qualification and Filtering is the process of determining whether a lead is ready to be passed on to sales based on things like customer demographics and behaviours. Some leads will be filtered out, because they are not yet at that stage or appear less promising than others – focussing on unqualified leads is a waste of time and resources. Customer relationship management (CRM) software can be used to track and evaluate leads before distributing them to sales.

If rounds of split testing, segmentation, and resends still result in low engagement scores for some of your subscribers then don’t be afraid to clean your list. Review subscriber data regularly to monitor activity and engagement ratings. Remove or further segment those who aren’t engaging in order to improve the overall open rates of your primary subscriber segments.

Imagine you have 125 leads. Every lead has engaged with your business in unique ways, and they’re in different stages of your sales funnel. It’s not humanly possible to glance at a lead and recall how closer/farther they are to your business—until you use lead scoring technology. Lead scoring is a method by which you define parameters to qualify or “score” a lead in the CRM. So a CTO might get 15 points by virtue of their designation, and a lead who clicked on a link in your email might get 10 points (versus a lead who only opened your email and gets 5 points). All these points add up, and the higher the score, the hotter the lead. Putting a score on a lead cuts down your decision-making time in terms of which lead you should contact first.
As of mid-2016 email deliverability is still an issue for legitimate marketers. According to the report, legitimate email servers averaged a delivery rate of 73% in the U.S.; six percent were filtered as spam, and 22% were missing. This lags behind other countries: Australia delivers at 90%, Canada at 89%, Britain at 88%, France at 84%, Germany at 80% and Brazil at 79%.[7]
Clearly, there has been a huge change in the traditional buying process.  In fact, according to Forrester, buyers might be anywhere from two-thirds to 90% of the way through their buying journey before they even reach the vendor. The reason this is happening more and more is because buyers have so much access to information that they can delay talking to sales until they are experts themselves.