Forum Discussion
Further information on Exchange Online/Outlook email send/recieve limitations.
I think Exchange gurus over here will answer your questions properly :-) cc TonyRedmond VasilMichev How you think about using a different approach to send this massive amount of e-mails? For instance, Azure SendGrid could be an option here
yes,
ive looked at solutions like sendgrid, mailgun etc, but i want avoid using a 3rd party. The solution itself is quite complicated and bespoke and I'm trying to keep it simple. id rather have our in house solution manage it, and keep my mail environment as clean and simple as possible.
Use a dedicated email service for massive email communication. Exchange Online is not designed for this kind of activity and that's why the throttling limits exist. Remember, Office 365 is a multi-tenant environment. If Exchange allowed tenants to send out hundreds of thousands of messages daily, the server load generated by that activity could prevent other tenants working.
yes i understand,
however this inst bulk spam or marketing, we are not affecting the health of the IP addresses with black lists. we can send from multiple addresses, each with 10K outbound and 80K inbound which is more than we need.
my questions are more "sanity checking" that there aren't going to be any weird limits i haven't thought of before we invest time in development.
thanks for your reply,
Well, if you stay within the limits, you should be OK. However, understand that Exchange throttles activities based on server load and this might affect your ability to send messages. With this in mind, I would consider whether this might impact your business processes. It probably won't if the messages are not time-critical; it might if they are.
