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Company details

  1. Email Service Provider
  2. Internet Marketing Service
  3. Online Marketing Agency
  4. Software Company
  5. Software Vendor

Written by the company

Email Infrastructure, Simplified Under Few Clicks. Keplars powers transactional and marketing emails with full delivery visibility, sandbox testing, and seamless scale - with strong developer experience, enabling you to send emails in under 5 clicks, and usage-based pricing. < 5s Average Time to Inbox, 99.77% Deliverability Rate, 100% Delivery Transparency. From Firebase triggers to Vercel edge functions, and from React Email to Handlebars - Keplars slots into your stack without changing how you build. Start instantly with an OAuth email managed domain, or switch to your own custom domain when you're ready. Managed domains work out of the box, while custom domains give you full control when you need it - without changing your integration.


Contact info

3.7

Average

TrustScore 3.5 out of 5

1 review

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Rated 5 out of 5 stars

Founder Touch Stack Technologies

As the CEO and Founder of Touch Stack Technologies, I approach infrastructure decisions with a strong bias toward reliability, scalability, and long-term value. Over the past three months, our team has been using the email infrastructure service provided by Keplars, and the experience has been exceptional.

From the outset, Keplars delivered a robust and dependable foundation for managing transactional and operational email across our products and client systems. Deliverability has been consistently high, latency is minimal, and the platform offers the kind of stability you expect from enterprise-grade infrastructure. For us, that reliability is non-negotiable, and Keplars has met that standard without compromise.

What has stood out most is the ease of integration and the clarity of their system architecture. Our engineering team was able to onboard quickly, implement across multiple environments, and maintain full visibility into email performance and system behavior. This has significantly reduced operational overhead and allowed us to focus more on building and scaling products rather than troubleshooting infrastructure.

Beyond performance, Keplars demonstrates a clear understanding of modern development workflows. The platform is thoughtfully designed, developer-friendly, and aligns well with fast-paced product teams that need to move efficiently without sacrificing quality or control.

Based on the results we’ve seen, we’ve confidently scaled Keplars across all our existing client projects. It has become a core part of how we handle communication infrastructure, and it continues to deliver at a high level.

Keplars is not just an email service, it’s a critical layer of infrastructure that supports growth, reliability, and operational excellence. I would strongly recommend it to any company serious about building scalable and dependable systems.

April 24, 2026
Unprompted review
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