include the functionality to schedule how many mails per campaign are allowed to be sent every minute/hour/week/.. in order to balance the number of outgoing emails and to be able to halt any campaign in case of an error that slipped through the testing process. 2 main reasons for this demand: 1) Being able to halt a running campaign in case any unforeseen problems are observed. Imagine you started to send out a campaign to 20000 users and after 30 min some customers start to call that they received the email in the wrong language. At that point we can still halt the campaign. In the scenario we at least know that we limited the risk as only 1250 customers received a potential error but 18750 customers did not. 2) load balancing the backoffice/marketing dep/.. Imagine we ask a segment of 20000 customers to update their identity details. For sure no matter how detailed the manual some customers will call the contact center. By spreading this message to the 20000 customers over a period of 2 weeks (or even months), the number of calls to the contact center will also be spread out. I know that this scenario also has other solutions such as a split of segments into multiple customer journeys. In our actual case we send out event invites to a large customer base with limited backoffice resources. Our integrator gave us a quote on a custom solution in which a batch intermediate segment is created that sends the contacts to the actual segment linked to the customer journey. But as this feature is available in many massmailing tools, I was surprised not to find it in dynamics for marketing. Hence the question just to be clear: the rationale for this request is not any concerns for spamfilters/settings/.. We know the tool can deal with this.