Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.
HTMLEmail.io - Responsive HTML email templates for startups & developers
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Templates by Email Monster - Hundreds of free, responsive email templates. Pick and edit.
Bots UI Kit - Fully customizable Sketch UI Kit for Messenger Platform
Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.