HTMLEmail.io - Responsive HTML email templates for startups & developers
SendX.io - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.
Startup Emails - Responsive HTML email templates for startups
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
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.
ConvertKit - Email marketing software for online creators. We help you earn a living online through an intuitive email marketing automation tool.