This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
LetterStack
Templates, sending, and logs - without the $20/month markup
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.
Every side project needs transactional email. Managed APIs (SendGrid, Mailgun, Resend, etc.) bundle SMTP with templates + API + logs - free tiers often cap daily sends; paid tiers add cost even when you already run Amazon SES or SMTP on a VPS.
I kept rebuilding nodemailer + Handlebars + a send log in every repo. LetterStack is that shared layer on YOUR SMTP:
• Handlebars templates (dashboard + API)
• POST /v1/emails/send with template + variables
• Send logs for debugging
• No volume caps from LetterStack (your SMTP provider's limits apply)
Pricing: Hobby $1/mo · Starter $5 · Pro $9
Launch promo: first month free on any plan - through June 30, 2026
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About LetterStack on Product Hunt
“Templates, sending, and logs - without the $20/month markup”
LetterStack was submitted on Product Hunt and earned 5 upvotes and 1 comments, placing #27 on the daily leaderboard. 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.
LetterStack was featured in API (98.3k followers), SaaS (42.5k followers) and Developer Tools (514k followers) on Product Hunt. Together, these topics include over 129k products, making this a competitive space to launch in.
Who hunted LetterStack?
LetterStack was hunted by Orkhan Karimov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how LetterStack stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Orkhan Karimov
Hey PH - I'm Orkhan, maker of LetterStack.
Every side project needs transactional email. Managed APIs (SendGrid, Mailgun, Resend, etc.) bundle SMTP with templates + API + logs - free tiers often cap daily sends; paid tiers add cost even when you already run Amazon SES or SMTP on a VPS.
I kept rebuilding nodemailer + Handlebars + a send log in every repo. LetterStack is that shared layer on YOUR SMTP:
• Handlebars templates (dashboard + API)
• POST /v1/emails/send with template + variables
• Send logs for debugging
• No volume caps from LetterStack (your SMTP provider's limits apply)
Pricing: Hobby $1/mo · Starter $5 · Pro $9
Launch promo: first month free on any plan - through June 30, 2026
Try it: https://app.letterstack.dev/register
Website: https://letterstack.dev
Our roadmap: https://letterstack.productdesk.dev
Happy to answer SES setup, deliverability, or BYO-SMTP tradeoffs. What do you use for transactional email today - managed API or your own SMTP?