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How to send a large number of emails or text messages? Net environment?
Spam scanning automatically blocks excessive messages from a domain. As long as there is an anti-spam gateway, the real recipient can't receive it, but your mail can be sent out.
There are two ways to send short messages: 1. SMS Cat II. Sms gateway.
SMS cats use mobile phone cards to send messages, which is very flexible, but it seems that the limit cannot exceed 200 messages per hour, otherwise the card will be locked.
SMS Gateway is a SMS service using ISP, with high fees and strict supervision.
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