I feel like the description of the topic is not very clear. For example, what if you don’t build it? 服务器，那何来客户端? Secondly, I feel like you want to use a mailbox as a database? It seems that the mailboxes of larger companies, such as QQ, seem to have to apply for third-party login mailboxes, and it is not easy to use POP and SMTP protocols.
If you just want to use a machine to store information, and the information is unidirectional, you can just save it as text information. If you need bidirectional information, then use a database.
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I feel like the description of the topic is not very clear. For example, what if you don’t build it?
服务器，那何来客户端?Secondly, I feel like you want to use a mailbox as a database? It seems that the mailboxes of larger companies, such as QQ, seem to have to apply for third-party login mailboxes, and it is not easy to use POP and SMTP protocols.
If you just want to use a machine to store information, and the information is unidirectional, you can just save it as text information. If you need bidirectional information, then use a database.
You can use RPC protocol, such as Thrift