Purchased lists are ineffective, and they impact everyone else who uses Mailchimp, too. If you send emails to a list of people whose contact info you bought, many of the emails will get identified as spam. Some spam filters will flag a campaign if anyone with the same IP has sent spam in the past. When you use Mailchimp, your email is delivered through our servers, so if one person sends spam, it could prevent other users’ emails from reaching inboxes. But by forbidding Mailchimp users from using purchased lists, we increase deliverability for everyone.
Use it to promote up-sells/cross-sells. You can even set up an autoresponder sequence for someone after they purchase and get repeat customers. Depending on the products you sell, you could offer an upsell, or cross sell related products. For example, if someone buys a digital camera, you can offer to add a lens, a tripod, and other accessories to their order before it ships. Or, if you sell products that people buy frequently (like food or disposable items, like diapers), you can automatically send them offers for new items when you know they’re about due for another order.
Cost per mille, often abbreviated to CPM, means that advertisers pay for every thousand displays of their message to potential customers (mille is the Latin word for thousand). In the online context, ad displays are usually called "impressions." Definitions of an "impression" vary among publishers,[58] and some impressions may not be charged because they don't represent a new exposure to an actual customer. Advertisers can use technologies such as web bugs to verify if an impression is actually delivered.[59][60]:59
Game advertising - In-Game advertising is defined as "inclusion of products or brands within a digital game."[50] The game allows brands or products to place ads within their game, either in a subtle manner or in the form of an advertisement banner. There are many factors that exist in whether brands are successful in their advertising of their brand/product, these being: Type of game, technical platform, 3-D and 4-D technology, game genre, congruity of brand and game, prominence of advertising within the game. Individual factors consist of attitudes towards placement advertisements, game involvement, product involvement, flow or entertainment. The attitude towards the advertising also takes into account not only the message shown but also the attitude towards the game. Dependent of how enjoyable the game is will determine how the brand is perceived, meaning if the game isn’t very enjoyable the consumer may subconsciously have a negative attitude towards the brand/product being advertised. In terms of Integrated Marketing Communication "integration of advertising in digital games into the general advertising, communication, and marketing strategy of the firm"[50] is an important as it results in a more clarity about the brand/product and creates a larger overall effect.
Keep the email short. If you write an email that's too long, there's a chance that recipients will skim over it or stop reading it at a certain point.[7] This could mean that they miss your call to action, or what you're trying to get across. Try to edit out pieces of information that aren't critical to the overall message. Make messages as short and concise as possible. Avoid over-elaboration or background that can clutter your blast.
The concept is simple. If someone is reading an in-depth blog post of yours, chances are they’re very interested in what you have to say on the topic. The key is to then offer them something that is directly related to the topic they’re reading about. You know they’re already interested, so by offering instantaneous extra value it’s not difficult to see why people would gladly sign up.
Perhaps you're a new company and don't have a customer base. Maybe you have a service you're sure that people will love... if only they heard about you. Whatever the reason, buying an email list seems like an easy, low cost way to grow your business. But, there are some serious consequences to purchasing. And there are real benefits to using an opt-in list!
Data-driven advertising: Users generate a lot of data in every step they take on the path of customer journey and Brands can now use that data to activate their known audience with data-driven programmatic media buying. Without exposing customers' privacy, users' Data can be collected from digital channels (e.g.: when customer visits a website, reads an e-mail, or launches and interact with brand's mobile app), brands can also collect data from real world customer interactions, such as brick and mortar stores visits and from CRM and Sales engines datasets. Also known as People-based marketing or addressable media, Data-driven advertising is empowering brands to find their loyal customers in their audience and deliver in real time a much more personal communication, highly relevant to each customers' moment and actions.[37]

The fact is, a significant percentage of millennials like mail. It has a built-in emotional response factor. Gallup reported that 36% of people under the age of 30 look forward to checking their mailboxes every day. What’s more, 95% of 18-to-29-year-olds have a positive response to receiving personal cards and letters. Notably this generation will wield a combined $1.4 trillion in spending power by 2020, as reported by Accenture.

Direct mail is a type  of direct marketing in which businesses send letters, postcards or other promotional materials to past, current or potential customers or clients. Direct mail campaigns may be targeted to either a consumer or business or both.  In many cases, the mailing is directed to a target demographic (i.e. home owners) or geographic market (i.e. a specific neighborhood). In most cases, it's mass or bulk mailing, but you can send direct mail in smaller quantities as well.