Email marketing is a very important channel for promoting products and online services. For this reason, many of companies are increasingly eager to invest in email design software, which helps to create their own promotional offers, emailed to current and potential customers. Email design software offered by Freshmail is an easy-to-use and easy-to-implement solution that is used by online stores and service providers. The ability to use own databases, but also the ability to send self-created mailings to potential customers whose data is taken from external databases, does not exhaust all the possibilities offered by this solution. Developers also teach how to leverage the power of email marketing to personalize mailings and offer only those products that are chosen to fullfil customer"s needs.