Sidemail - The simplest way to send transactional emails. Sidemail makes sending transactional emails trivial, it's perfect for side projects, MVPs or the next big thing.
Pistachio Email Templates - Delicious newsletter templates built for automation
Semplates.io - Create, edit and manage all your email templates on AWS SES with ease.
SaaS Email Templates - Responsive HTML email templates for SaaS startups
Mailook - Identify & fix your email deliverability issues for free 👀
Templates by Email Monster - Hundreds of free, responsive email templates. Pick and edit.