Manual:$wgEnotifImpersonal

Email notification (Enotif) settings: $wgEnotifImpersonal
Send a generic mail instead of a personalised mail for each user.
Introduced in version:1.11.0 (r21897)
Removed in version:Still in use
Allowed values:(boolean)
Default value:false

Details

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If true, send a generic mail instead of a personalised mail for each user. This always uses UTC as the time zone, and doesn't include the username.

For pages with many users watching, this can significantly reduce mail load. Has no effect when using sendmail rather than SMTP.