Marketers don’t always automatically receive notifications when they’ve been blacklisted, so it’s up to the marketer to monitor their brand’s email sending reputation. There are a number of free online resources that marketers should utilize to check their blacklist status before sending an email blast, such as Barracuda Reputation Block List or MultiRBL.
Targeting, viewability, brand safety and invalid traffic: Targeting, viewability, brand safety and invalid traffic all are aspects used by marketers to help advocate digital advertising. Cookies are a form of digital advertising, which are tracking tools within desktop devices; causing difficulty, with shortcomings including deletion by web browsers, the inability to sort between multiple users of a device, inaccurate estimates for unique visitors, overstating reach, understanding frequency, problems with ad servers, which cannot distinguish between when cookies have been deleted and when consumers have not previously been exposed to an ad. Due to the inaccuracies influenced by cookies, demographics in the target market are low and vary (Whiteside, 2016).[42] Another element, which is affected within digital marketing, is ‘viewabilty’ or whether the ad was actually seen by the consumer. Many ads are not seen by a consumer and may never reach the right demographic segment. Brand safety is another issue of whether or not the ad was produced in the context of being unethical or having offensive content. Recognizing fraud when an ad is exposed is another challenge marketers face. This relates to invalid traffic as premium sites are more effective at detecting fraudulent traffic, although non-premium sites are more so the problem (Whiteside, 2016).[42]

As advertisers collect data across multiple external websites about a user's online activity, they can create a detailed profile of the user's interests to deliver even more targeted advertising. This aggregation of data is called behavioral targeting.[26] Advertisers can also target their audience by using contextual to deliver display ads related to the content of the web page where the ads appear.[19]:118 Retargeting, behavioral targeting, and contextual advertising all are designed to increase an advertiser's return on investment, or ROI, over untargeted ads.[27] 

The best time to send an email blast depends a little on the best time you think your recipients would like to receive it. Most business contacts receive an average of 75 emails per day. To make sure they have the time to review (and hopefully, read) your email, try to have your email blast arrive on Tuesday Mornings between 8am and 11am. Mondays (especially after holidays) is typically a day where most contacts are catching up on email from the weekend. Fridays are difficult, as most contacts are wrapping up work from the week and may not have the time to look at your message. Even if they do find time to read it, they may have forgotten about you, and your message, by the next Monday. If Monday is a holiday, time your email blast to arrive on a Wednesday Morning after the holiday. Mornings are best as most people are planning or finalizing their day in the mornings. This gives them more time to react to your email message that same day. Afternoons and evenings are typically too late in the workday to encourage immediate action.
Enhancing the Value of Mail: The Human Response, sponsored by the U.S. Post Office, used eye-movement tracking and biometric measurements such as heart rate and respiration to gauge attention and emotional engagement with both digital and direct mail. It then used magnetic resonance imaging to capture participants' brain activity when asked to recall a particular ad.
First of all, BuzzFeed has awesome subject lines and preview text. They are always short and punchy -- which fits in perfectly with the rest of BuzzFeed's content. I especially love how the preview text will accompany the subject line. For example, if the subject line is a question, the preview text is the answer. Or if the subject line is a command (like the one below), the preview text seems like the next logical thought right after it:
Presentation is everything, or so they say. With this old adage in mind, we’ve compiled our best tips for anyone who wants to send emails that subscribers click into a handy email design guide. We cover each facet of design: content, templates, identity, color, images, layout, fonts, and calls to action. Design is as much science as it is art, and we take the guesswork out of what can seem like the most challenging part of sending good emails.
Think targeted marketing when determining the demographic selects for your mailing list. Who are your best customers? A direct mailing list performs better when you target your prospects based on the demographics of your current customers. Our online mailing list service allows you to define your mailing list by age, income, gender, length of residence and more. Each list contains different demographic selects.
Email marketing is the act of sending a commercial message, typically to a group of people, using email. In its broadest sense, every email sent to a potential or current customer could be considered email marketing. It usually involves using email to send advertisements, request business, or solicit sales or donations, and is meant to build loyalty, trust, or brand awareness. Marketing emails can be sent to a purchased lead list or a current customer database. The term usually refers to sending email messages with the purpose of enhancing a merchant's relationship with current or previous customers, encouraging customer loyalty and repeat business, acquiring new customers or convincing current customers to purchase something immediately, and sharing third-party ads.

Particular groups of customers can be targeted or even individuals. Offering individual customers special deals on merchandise and/or services on the customer's birthday, for instance, is one example of email marketing personalization. (A restaurant might send an email to customers on their birthday offering 50% off an entree,) Email marketing helps a business develop and maintain a relationship with a customer over time that hopefully results in increased sales and increased customer loyalty. 
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