Hi Heather, whilst I am still relatively new to the role of WFM and may not exactly know the correct answer, one thing that our organization does is, by using the email "Flow" to only deliver emails during certain times. Although we are a 24 hour business, we do not want our agents working on emails during peak times, so we have set up a "flow" that essentially holds emails in the queue between certain hours and then only delivers to agents once the peak times are over.
By doing this, the staffing requirements during the peak hours is only reflective based on the number of expected calls.
The other thing is to zero out the emails in the forecast outside of business hours, i.e if your business hours were say 9 to 5, then ensuring that the forecast reads no emails outside of these hours.
Hope this helps
------------------------------
Adam Strang
------------------------------