llms.txt
# Keplars
> Keplars is a developer-first transactional email platform that lets teams send product and transactional emails in under 5 clicks - no SMTP configuration, no app passwords, no deliverability headaches. Connect Gmail, Google Workspace, or Outlook via OAuth and start sending in under 5 minutes.
Keplars is built for developers and engineering teams who need reliable, production-grade email infrastructure for password resets, OTPs, order confirmations, welcome emails, and notifications. The platform handles deliverability, reputation monitoring, analytics, and scheduling so teams can focus on shipping.
Key platform stats: 10M+ emails delivered, 99.77% inbox delivery rate, 5-second average inbox time, 99.9% uptime, 4.8/5 rating from 150+ reviews.
## Core Pages
- [Home](https://keplars.com/): Overview of Keplars - hero, features, integrations, testimonials, and pricing.
- [Pricing](https://keplars.com/pricing): All pricing plans (Free, Orbit, Launch) with feature comparison and FAQ.
- [Blog](https://keplars.com/blog): Engineering, product, and community articles on email infrastructure and developer tutorials.
- [About](https://keplars.com/about): Company story, mission, and the team behind Keplars.
- [Contact](https://keplars.com/contact): Get in touch with the Keplars team.
- [FAQ](https://keplars.com/faq): Answers to common questions about billing, deliverability, integrations, and security.
- [Documentation](https://docs.keplars.com): Full developer documentation - API reference, SDK guides, webhooks, and integration tutorials.
- [Status](https://keplarsstatus.com): Real-time system health and uptime for the Keplars platform.
## Product & Features
- [Transactional Emails](https://keplars.com/transactional-emails): Transactional email API for developers - password resets, OTPs, order confirmations, and notifications.
- [Marketing Emails](https://keplars.com/marketing-emails): Marketing email campaigns - newsletters and promotions.
- [Campaigns](https://keplars.com/campaigns): Create, send, and track email campaigns.
- [Email Automation](https://keplars.com/email-automation): Visual workflow builder for automated email sequences.
- [Email Warmup](https://keplars.com/email-warmup): Mailbox warmup to build and protect sender reputation.
- [Email Deliverability](https://keplars.com/email-deliverability): Trusted infrastructure and reputation monitoring for inbox delivery.
- [Email Tracking](https://keplars.com/email-tracking): Delivery, open, and click tracking analytics.
- [OAuth & Custom Domains](https://keplars.com/oauth): Send via Gmail, Google Workspace, and Outlook with OAuth - no SMTP or app passwords.
- [Email Editor](https://keplars.com/email-editor): Unified drag-and-drop and code email editor.
- [Integrations](https://keplars.com/integrations): Connect Keplars with Vercel, n8n, Zapier, Supabase, and more.
- [AI Agents](https://keplars.com/ai-agents): Use Keplars with AI coding agents and AI-native platforms; install the Keplars skill in one command.
- [Price Calculator](https://keplars.com/price-calculator): Estimate monthly cost based on sending volume and plan features.
## Who It's For
- [Enterprise](https://keplars.com/for/enterprise): Email infrastructure for enterprise teams.
- [Startups](https://keplars.com/for/startups): OAuth email sending for startups.
- [Developers](https://keplars.com/for/developers): Email API for developers - REST, SMTP, and SDKs.
- [Marketers](https://keplars.com/for/marketers): Email marketing platform for marketers.
- [Indie Hackers](https://keplars.com/for/indie-hackers): OAuth email sending for indie hackers.
- [Side Projects](https://keplars.com/for/side-projects): Free OAuth email sending for side projects.
## Comparisons
- [Keplars vs Resend](https://keplars.com/resend-alternative): How Keplars compares to Resend for developer-first transactional and marketing email.
- [Keplars vs SendGrid](https://keplars.com/sendgrid-alternative): How Keplars compares to SendGrid for developer-first transactional email.
- [Keplars vs Postmark](https://keplars.com/postmark-alternative): Keplars and Postmark compared on setup, pricing, OAuth support, templates, automations, and deliverability.
- [Keplars vs Mailgun](https://keplars.com/mailgun-alternative): How Keplars compares to Mailgun for startups and teams.
- [Keplars vs Amazon SES](https://keplars.com/aws-ses-alternative): How Keplars compares to Amazon SES for teams that want OAuth-based sending without SMTP setup.
## Trust & Security
- [Why Keplars](https://keplars.com/why-keplars): OAuth-first sending, low-latency delivery, full tracking visibility, and transparent usage-based pricing.
- [Trust Center](https://keplars.com/trust): Encryption, infrastructure security, and compliance initiatives including SOC 2 and GDPR readiness.
- [Is Keplars Secure and Reliable?](https://keplars.com/is-keplars-secure-and-reliable): Infrastructure security practices, data handling, and redundancy across Leaseweb and AWS data centers.
## Pricing Plans
- **Free** - $0/month: 5,000 emails/month, 1 email account, 150 emails/hour, 1 webhook, 5 AI credits, 1 team member, 1-day data retention.
- **Orbit** - $5/month: 10,000 emails/month, 5 accounts, 500 emails/hour, 5 webhooks, 5 AI credits, 2 team members, 3-day retention, 1 custom domain.
- **Launch** - $10/month: 25,000 emails/month, 10 accounts, 3,500 emails/hour, 10 webhooks, 10 AI credits, 5 team members, 7-day retention, 5 custom domains, email scheduling.
All plans include: unlimited API keys and SMTP credentials, REST API access, webhooks, real-time analytics, and multi-provider support.
## Blog - Product
- [Introducing Multi-Region Email Sending](https://keplars.com/blog/multi-region-email-sending): Email delivery across APAC (Singapore), Africa (Cape Town), and US (North Virginia) for lower latency and higher global reliability.
## Blog - Engineering
- [Launching an MVP: What to Build, What to Skip](https://keplars.com/blog/launching-an-mvp-what-to-build-what-to-skip): Why transactional email infrastructure is one of the most common examples of wasted MVP effort - and what to do instead.
- [Introducing an API Gateway](https://keplars.com/blog/introducing-an-api-gateway): How Keplars integrated Apache APISIX for centralized routing, rate limiting, and security.
- [Moving to a Semi-Microservices Architecture](https://keplars.com/blog/moving-to-a-semi-microservices-architecture): Architectural evolution of the Keplars backend from monolith toward modular microservices.
- [Switching from NGINX to Traefik](https://keplars.com/blog/switching-from-nginx-to-traefik): Why Keplars moved its reverse proxy from NGINX to Traefik for better cloud-native support.
- [Why Transactional Email Latency Matters](https://keplars.com/blog/why-transactional-email-latency-matters): How email latency affects user experience in authentication, OTP, and notification workflows.
- [Building Spam Protection into Transactional Email](https://keplars.com/blog/building-spam-protection-into-transactional-email): How Keplars approaches sender reputation and spam protection at the infrastructure level.
- [Moving from JSON to gRPC for Faster Internal Communication](https://keplars.com/blog/moving-from-json-to-grpc-for-faster-internal-communication): Performance gains from migrating internal service communication from REST/JSON to gRPC.
- [Making Database Migrations Predictable](https://keplars.com/blog/making-database-migrations-predictable): Keplars' approach to safe, zero-downtime database migrations in production.
## Blog - Community
- [Stop Rebuilding Contact Forms in Every Next.js Project](https://keplars.com/blog/stop-rebuilding-contact-forms-nextjs): An open-source Next.js contact form starter powered by Keplars, with bot protection and Discord notifications.
## Company
- [Testimonials](https://keplars.com/testimonials): Feedback from founders, engineers, and operators sending millions of emails through Keplars.
- [Roadmap](https://keplars.com/roadmap): Public product roadmap and milestones.
- [Careers](https://keplars.com/career): Open roles building developer-first email infrastructure.
- [Brand](https://keplars.com/brand): Official logos, colours, and brand guidelines.
- [Videos](https://keplars.com/videos): Product walkthroughs, tutorials, and behind-the-scenes content.
- [Partners](https://keplars.com/partners): Partner program for agencies and developer tools integrating Keplars.
- [Affiliate Program](https://keplars.com/affiliate): Earn commissions by referring developers and teams to Keplars.
## Legal
- [Privacy Policy](https://keplars.com/legal/privacy-policy): How Keplars collects, stores, and uses data.
- [Terms of Service](https://keplars.com/legal/terms-of-service): Terms governing use of the Keplars platform.
- [Cancellation Policy](https://keplars.com/legal/cancellation-policy): Keplars cancellation and refund policy.
- [Anti-Spam Policy](https://keplars.com/legal/anti-spam-policy): Keplars' policy against spam and abusive sending.
- [Subprocessors](https://keplars.com/legal/subprocessors): Third-party subprocessors used to deliver the Keplars service.
## Contact & Community
- Support: support@keplars.com
- Sales: sales@keplars.com
- Twitter / X: https://x.com/KeplarsHQ
- GitHub: https://github.com/KeplarsHQ
- Discord: https://discord.gg/KmYQzzC5qA
