CRM กับ การมัดใจลูกค้าด้วยจดหมายขอบคุณ
After the customer has been impressed by the purchase of goods or services from us already. We need to build relationships with customers. Or need a CRM system, perhaps sending a thank-you back to the customer is one more way to get more points. And another channel of advertising. It is a market that does not require much investment. But it must be the core of the work.
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