If you just started with email marketing or switched your delivery provider or even our domain or IP address it’s a good practice to not start blasting your provider with too many emails at once.
With Mailster you can slowly increase your mail throughput over time.
![](https://kb.mailster.co/wp-content/uploads/2021/06/warmu-up-delivery-setting-1024x139.png)
If you start fresh you should consider taking a one-month warm-up period. Mailster will adjust the send rate according to your setting and increase the mails which are sent in a batch.
This option works even better if you enable automatically calculated batch size.