Lettr is a Germany-based e-mail marketing software company. They provide solutions for creating professional newsletters, delivering secure emails, email confirmations, and managing recipients.
The Lettr API enables developers to bind Lettr's system to their own software. This enables the automation of sending email confirmations, messages, announcements, and status emails. Customer data can be synchronized in e-commerce software with recipient lists.
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So far, we don't have a record of any changes to this API