This report provides information on the length of time taken to send mailings.

You can access the report by going to "Reports.Emails.Email Send Speed"

The options for the report are:

Container Id List: pick the container you are interested in or leave blank for all containers

Minimum Total Sends: this only looks at mailings that went to at least this number of recipients. This defaults to 1000. 

Date Start - Date End: enter the required date range. Note that this report can run for a maximum of 1 month.

Last x days: alternatively the date range can be entered as the last x days - this can be a maximum of 30