LetterStack
Templates, sending, and logs - without the $20/month markup
About LetterStack
Transactional email APIs are convenient until free tiers cap daily volume - or you pay for SMTP you already have. LetterStack is the developer layer on your own SMTP: Handlebars templates, one REST send endpoint, send logs. Connect Gmail, Amazon SES, Zoho, or self-hosted. Your SMTP, your reputation. No volume caps from us. From $1/mo. First month free through June 30, 2026.
What you should know about LetterStack
LetterStack — Templates, sending, and logs - without the $20/month markup. It is categorized under Developer Tools . On Product Hunt, this tool has received 5 upvotes from the maker community.
Pricing & licensing: Pricing details are not publicly disclosed at the moment .
Use cases & topics: LetterStack is associated with the following topics: API, SaaS, Developer Tools. Teams working in API / SaaS / Developer Tools spaces typically evaluate this kind of tool when scoping new architecture decisions or replacing legacy components.
Getting started: Visit the official site to sign up, explore pricing tiers, and start onboarding your team. Most teams hit value within the first week if the tool aligns with their existing Developer Tools stack.
Editor's note from Fanny Engriana (Founder, Wardigi Digital Agency): when evaluating tools in the Developer Tools category for our agency clients, we look at three things first — license clarity, community size, and active maintenance. Tools with explicit license terms and ongoing commits tend to remain viable across multi-year projects.