On holidays people tend to not be on their computers and don’t check their emails as they normally would.

Which means that they will tend get there emails when they return, with a lot of other emails that pile together. So pretty much every email other than their VERY important ones tend to get deleted very fast, without even thinking about it.

Of course this is mandatory, but the months to send less emails would be December, January, July and August.

Will you lose money if you follow this…? It’s a possibility since you are sending less emails, however I would recommend to send your more important emails on non-holiday days. This way they will most likely get read by more people on your list.