High levels of horizontal integration lead to high levels of communication within the business. Another benefit of using this strategy is that it leads to a larger market for merged businesses, and it is easier to build good reputations for a business when using this strategy. A disadvantage of using a diversification strategy is that the benefits could take a while to start showing, which could lead the business to believe that the strategy in ineffective. Another disadvantage or risk is, it has been shown that using the horizontal diversification method has become harmful for stock value, but using the vertical diversification had the best effects.
During decline, demand for a good begins to taper off, and the firm may opt to discontinue the manufacture of the product. This is so, if revenue for the product comes from efficiency savings in production, over actual sales of a good/service. However, if a product services a niche market, or is complementary to another product, it may continue the manufacture of the product, despite a low level of sales/revenue being accrued. 
Email marketing - Email marketing in comparison to other forms of digital marketing is considered cheap; it is also a way to rapidly communicate a message such as their value proposition to existing or potential customers. Yet this channel of communication may be perceived by recipients to be bothersome and irritating especially to new or potential customers, therefore the success of email marketing is reliant on the language and visual appeal applied. In terms of visual appeal, there are indications that using graphics/visuals that are relevant to the message which is attempting to be sent, yet less visual graphics to be applied with initial emails are more effective in-turn creating a relatively personal feel to the email. In terms of language, the style is the main factor in determining how captivating the email is. Using casual tone invokes a warmer and gentle and inviting feel to the email in comparison to a formal style. For combinations; it's suggested that to maximize effectiveness; using no graphics/visual alongside casual language. In contrast using no visual appeal and a formal language style is seen as the least effective method. A DAY IN THE LIFE OF A DIGITAL MARKETING MANAGER | WHAT DOES A DIGITAL MARKETER DO? & SALARIES