|The time, in seconds, after which a email address confirmation token expires.
|默认值：||7 * 24 * 60 * 60 (7 days)|
|其他设置： 按首字母排序 | 按功能排序|
The time, in seconds, after which a email address confirmation token expires. Such tokens are sent out when a user sets their email address for the first time, or changes their email address.
If $wgEmailAuthentication is set to false, this does not apply.