We allow up to 300 emails to be sent out per hour per domain on our servers. This limit will not be changed for any reason. There is also a limit to the maximum recipients of any single message of 40 per message or per 60 second time frame.
Any mailing list or subscription service MUST use throttling of emails so that emails are sent out at an interval of at least 10 seconds between messages. More rules can be found here: Terms
We no longer recommend mailchimp, its so confusing and difficult to use now. Instead look at mailierLite or emailOctopus.
