邮件与sendmail [英] mail vs sendmail

问题描述

我在Codeigniter中使用Email类，并且在手册中，我看到了可以使用3种协议：邮件，sendmail和smtp。

I am using the Email class in Codeigniter, and in the manual I see that there are 3 protocols that can be used: mail, sendmail and smtp.

邮件和sendmail之间的区别是什么？

What is the dfiference between mail and sendmail? Is it true that using mail protocol will have a higher chance of having the domain marked as spam?

推荐答案

如果使用的是邮件协议，那么将域标记为垃圾邮件的可能性更高吗？ * nix，机会是mail（）和sendmail（）相同。 mail（）仍将使用sendmail，但它将传递您在php.ini中定义的所有参数。

If you're using *nix, chances are mail() and sendmail() are identical. mail() will still use sendmail, but it passes any arguments you have defined in your php.ini.

SMTP和sendmail之间的区别更大。如果您要进行大量电子邮件发送，则要使用SMTP，因为sendmail会为每个电子邮件打开一个新连接，这会增加很多开销。

The bigger difference is between SMTP and sendmail. If you are doing a lot of mass emailing you want to use SMTP because sendmail opens a new connection for each email which adds quite a bit of overhead.

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