Email newsletter marketing is the backbone of an online store and it can greatly improve customer relationships. Offering useful product recommendations which customers can really think buying or sending product selection articles, guides is a common method. Research shows that opt-in newsletters have a high opening rate and convert better than traditional methods.
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On the other hand, newsletters should be sent carefully because very frequent or irrelevant newsletters can be regarded as spam emails by customers. At the worst case, it can lead the customer to completely abandon the store for future purchases.
We can send messages to selected people by Search or all newsletter subscribers or all customers. Currently, OpenCart does not provide a function to send messages to selected customer groups.
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Alternatively, we can use some open source, free software to manage email newsletters for customer groups. PhpList is one of the most popular ones. There the details about it at http://www.phplist.com/.
