Mailmodo

Mailmodo lets you embed interactive elements (forms, polls, quizzes, surveys) directly inside emails using AMP for Email technology. The drag-and-drop builder makes campaign design accessible without code, and you get automation workflows to trigger sequences based on subscriber behavior. Built-in list segmentation and analytics show which campaigns and interactive elements drive engagement.

It's best for marketers who want higher interaction rates than traditional email allows. Most email tools force subscribers to click through to a landing page to respond, but Mailmodo keeps interactions in the inbox, which reduces friction and typically increases response rates since people don't have to leave their email client.