e-mails to be sent per hour setting. This setting will be useful for forums with a large number of users.
Here is a post about this: How to set Email sending speed limit? - #2 by pfaffman
There was a recent topic that I can’t find now in which someone had found a partial solution by editing the core code.
1 Like
There is already a global variable which specifies the number of digests to send (rate limit) per 30 minutes.
Are you talking about digests?
If so, you can set:
GlobalSetting.max_digests_enqueued_per_30_mins_per_site
For per hour, just divide your per hour rate by two and set the global above (for digests) 
See Also:
2 Likes