The best alternatives to HEML are HTML Email, MJML App, and Replybutton. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of HEML?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Responsive HTML email templates tested on mobile and desktop. Avoid 2-3 days of coding, get an easy to integrate template that works. Notifications, newsletters, receipts, welcome emails, ready to use with your email service provider.
Replybutton is an email outreach tool that helps customer-facing people to get more replies to emails by adding reply buttons, polls, and surveys. Make it easy for your customers to reply your emails with 1-click and get more replies than ever.