E-mail and Internet marketing campaigns allow you to make the most of limited advertising dollars while reaching a great number of potential customers. Like traditional direct mail, persuasive messages online can help you attract new customers, keep existing ones, and promote future sales. The persuasive techniques used for print messages also work with electronic messages; there are, however, a few key differences. Identify the guidelines for creating effective e-mail sales messages. Check all that apply. Send "blanket" mailings. Provide a means for opting out. Focus on a few central selling points. Craft a catchy subject line. Keep the main point "below the fold."

1. Send blanket Mailings

2. Provide a means of opting out

3. Focus on a few central selling points

4. Craft a catchy subject line

Explanation:

E-mail sales messages are an effective marketing tool employed by most businesses to market their products. To be effective in doing this and ensure getting positive feed backs, it is important to do the following;

1. Provide a means of opting out: This is necessary in order to avoid spam complaints. The option of opting out should be very visible to the receivers.

2. Focus on a few central selling points: This is important if the interest of the receiver is to be maintained.

3. Craft a catchy subject line: If the subject line does not appeal to the interest of the receiver, he may become uninterested in the entire message.

4. Send Blanket mailings: Blanket mailings are messages sent to a large number of people. It should be properly targeted to the right audience if it is to be effective.

Main points should not be kept below the section of a web page as it would take a longer time to scroll down before the message is seen.  

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answerindividual preferences are not revealed in the market for the good;