And that leads us right into understanding service pricing and packaging. The email marketing services we reviewed range from about $5 per month to as much as $20 per month for a range of features. Many email marketing plans include unlimited email sends each month and bill you based on the number of subscribers. If you have a small list, then look for a company that offers a free plan, a low-cost plan for several hundred subscribers, or even a pay-as-you-go plan. On the flip side, many of these services also offer high-volume plans with up to 100,000 or more contacts. Sometimes this requires a custom plan that has to be arranged directly with a sales rep. If you're willing to commit, then look for the companies that offer discounts if you pay yearly rather than monthly. A few offer also money-back guarantees.
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. 
What we liked: MailerLite’s ease of use makes it an ideal tool for getting started with autoresponders – even beginners can master setting up emails and campaigns fairly quickly. And it’s great that you can use most of the features completely free of charge (as long as you have fewer than 1,000 subscribers). If you do need to upgrade, it’s one of the most competitively priced providers on the market – so it’s a great way to set up cheap autoresponders.
I’m not happy at all with MailChimp. Has anyone found the same problems with MailChimp as I have? I find that many of my list members unsubscribe from my list daily. I know these people ands contact them and they say they have not unsubscribed. twice I even found my own email taken off the list. When I look into the MailChimp list Spam is the reason for the person’s unsubscription. Over the years I’ve been on MailChimp I’ve contacted support and I’ve done everything I can but nothing has changed. I’m now looking to move to another company.
4. Make Links Clear and Visible & Use Text Links: Make sure that all links to your product purchasing pages are clear and visible. When possible, default to blue, underlined links for easy user recognition. Though in web design it is often unadvisable to use the words "click here" in a link, in email design it typically is more effective to use the words "click here." Make sure that your links are text links and not image-based links as images may not appear in all emails.

3. Email converts better. People who buy products marketed through email spend 138% more than those who do not receive email offers. In fact, email marketing has an ROI of 3800%. That’s huge! And if you are wondering if social media converts even better, think again: the average order value of an email is at least three times higher than that of social media.
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