Keplars
Email Infrastructure for Modern Product Teams
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Debojyoti Singha

Keplars Marketing Emails - Track, target & send campaigns - pay by volume, not contacts

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Keplars
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Keplars Marketing Emails lets you run campaigns with full tracking, audience targeting, and a clean API-first workflow. Setup under few clicks. Track deliveries, opens, clicks, and timelines in real time. Pricing is volume-based, not contact-based - with custom plans as you scale. Monitor and protect your email reputation to improve deliverability. Built for developers and modern teams to launch, manage, and optimize campaigns faster without the usual tool bloat.

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Debojyoti Singha
Maker
📌
Hey everyone 👋 Deb here, founder of Keplars. We built Keplars Marketing Emails after getting frustrated with existing tools - complex UIs, contact-based pricing that gets expensive fast, and limited visibility into what’s actually happening after you hit send. So we decided to build something simpler and more developer-first: - Full tracking (deliveries, opens, clicks, timelines) - Campaigns + audience targeting in one place - Volume-based pricing (pay per email, not contacts) - Built-in email reputation monitoring to improve deliverability The goal is straightforward: give you full control over your marketing emails without the bloat. Would genuinely love your feedback . Curious - what’s your biggest pain with current email tools? Happy to answer anything 🙌
Ananya Singha
Maker

Finally out!

Been a crazy journey taking this from a rough idea to something people are actually using today.

We’ve spent a lot of time trying to simplify what’s usually a painful space - email setup, tracking, campaigns and make it feel way more straightforward.

Seeing real usage, feedback, and even small spikes already… hits different.

Still a lot more to build, but this is a big step for us.

Would really love to hear what you all think and what we should improve next.

Suyash
💎 Pixel perfection

@ananya_452 Been trying this out for a bit and the experience is quite smooth. Setup didn’t take much time, and having both transactional + marketing emails in one place is convenient.

Also liked the tracking, you can actually understand what’s happening instead of just seeing high-level numbers.

Debojyoti Singha
Maker

@abhiranjan_kumar2  Thanks for trying it out 🙌

Good to hear the setup felt easy - that was one of the main things we wanted to fix.

And yeah, the tracking part… we’ve felt that pain ourselves with other tools, so tried to make it a bit more clear and useful.

Would love to hear how it feels as you use it more.

Ananya Singha
Maker

@abhiranjan_kumar2 Really appreciate this, thanks for sharing 🙌

Yotam Dahan
💡 Bright idea

Congrats on the launch! As a marketing lead at a startup, I'm constantly caught between two worlds — I need our transactional emails (welcome flows, password resets, etc.) to actually land in the inbox, but I also need enough visibility to know when something breaks without bothering the dev team every time. The "full delivery visibility" piece is what caught my eye. Can I see bounce reasons broken down by email provider - like whether Gmail is treating us differently than Outlook? That's the insight that would actually let me act on delivery issues myself instead of guessing.

Debojyoti Singha
Maker

Hey @yotam_dahan, really appreciate the detailed feedback. This is exactly the kind of use case we're building for.

You're right on the money. We actually already capture provider-level bounce reasons on our end (Gmail, Outlook, etc.), but right now we surface generic bounce data to users for privacy reasons. Breaking it down by provider with specific bounce codes is something we can absolutely add. It's more of a product decision than an infrastructure gap.

I'll add this to our roadmap. Would be super helpful to stay in touch as we ship it. Would love to have you try it early.

Ananya Singha
Maker

@yotam_dahan +1 to this - this is exactly the kind of visibility we want to unlock.

A lot of teams end up guessing when something breaks, especially across providers. Making that clearer (and actionable) is something we’re actively thinking about.

Would love to keep you in the loop as we build this out.

Peter Claridge
🔌 Plugged in

Hi @debojyoti452 congrats on your second launch! I thought this product would have got a bit more traction. I love the name of your product (hello, astronomy), and I love your website design. Who is responsible for these two things?

Debojyoti Singha
Maker

@peterclaridge Hey Peter, really appreciate that 🙌

It’s just the two of us - I handle the engineering side (all the tech and features), and my co-founder @ananya_452 takes care of product design and marketing. Hope to expand our team soon.

And yeah, the name 😄 I’ve always been a big fan of space and anything related to the cosmos, so “Keplars” just kind of came out naturally. Didn’t overthink it too much - just went with what felt right.

Peter Claridge

@ananya_452  @debojyoti452 One more question: What would you say to someone looking your product vs resend.dev for transactional emails (I've been using resend.dev for my hobby projects so far).

Debojyoti Singha
Maker

@peterclaridge  Keplars provides Clarity, full visibility, better UX, and a built-in editor (code + drag & drop) https://enceladas.com , also pricing is super flexible here which you will not find anywhere else. Just one thing to say try Keplars once, and it will be hard to switch back to anywhere else.

Ananya Singha
Maker

@peterclaridge  After using Keplars, everything else feels a bit more complicated. As we don’t realize how much friction we had… until someone removes it. Our email editor has a special highlight upon it : it's enceladas.com