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How many emails can we send?

billhighway asked
Last Modified: 2012-05-09
We are a paperless (email only) billing company with many (120,000+) email recipients.  We are trying to get a handle on our capacity to send emails and were hoping to get some insight from this board.  

We have normal internal user traffic for most of the month, but on the 1st of every month we send out a huge amount of emails from one "from" address.  We would like to know how we can determine what the theoretical "best practice" maximum number of emails we can send through our single Exchange Server 2007 device.  We have a Dell PowerEdge 2970 with 2-Quad core 2.2 GHz procs with 6GB of RAM.  

All of the sizing examples I have found tell you the size of server you should purchase depending on your load.  But this is the reverse of that and we are also not sure if the "bulk" email nature of this process is taken into account.  

If you could tell me how to figure this our or at least point me in the right direction, I would be much obliged.

Thanks for your help.
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Shreedhar EtteTechnical Manager
Top Expert 2010


Refer this:

and see the Accepted Solution

Hope this helps,


Thank you for the response however that thread does not address the question I am asking.  We already use Exchange Server via home-grown .net application without a problem.  We are just trying to get some data on what is our theoretical maximum before the server chokes so that if we start to see it trend upwards, we will know at what point we should be concerned.

We are already set up with our ISP to be a bulk email sender and have taken precautions to not be blacklisted.
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Thank you, this is very helpful information.

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