Yes. With Hakema, you do not need an external mailing software (e.g. mailchimp) to market your services.
Once you have created a promotion, simply share it to your customer database with click of a button.
First create an offer. How do I create a Promotion?
Go to the promotion you want to share
Admin ->Marketing -> Promotions
You will see and icon with users. You can click that icon and you will be asked if you would like to share the offer to your customers.