Warm-ups are not considered part of the email send count, the warm-up process builds a positive sender reputation and improve deliverability.

Furthermore, the warm-ups are a precursor to actual email sends, rather than being included in the send count.

In Salesforge, we have settings pannel for each mailbox that looks like this for warm-ups:

If we click on ''Settings'' we will be able to make settings for the sending limit (warm-up excluded). Keeping the mouse on the Question Mark next to sending limit will show us more details, just as in this screenshot: