Keplars

Email infrastructure for startups — send transactional and marketing emails via API with real-time delivery tracking

keplars.com

Verified API available Works with n8n · Zapier

Quick facts
What is it	Email infrastructure for startups — send transactional and marketing emails via API with real-time delivery tracking
Pricing	Paid — from $1/mo
Free tier	No
Platform	Web Application
API	Yes
Works with	n8n, Zapier
Best for	sending password resets and order confirmations, running marketing email campaigns with analytics
Domain registered	2026

Data updated Aug. 1, 2026

What does Keplars do?

Keplars is an email infrastructure service built for startups and product teams. It handles both transactional emails (like password resets and order confirmations) and marketing email campaigns. You send emails through a REST API, SMTP relay, or official SDKs covering 11 languages. The platform offers real-time delivery tracking, so you can see exactly when an email is sent, delivered, or opened. Setting up takes less than five clicks — get an API key and start sending.

What makes Keplars stand out is the combination of simplicity and enterprise-grade reliability. It promises 99.99% uptime with multi-region failover and a global inbox deliverability rate of 99.77%. Emails typically reach the inbox in under five seconds. The built-in email editor lets you design messages with drag-and-drop blocks or write raw HTML. There are over 100 native integrations with tools like CRMs, e-commerce platforms, and dev environments. You also get a sandbox for testing before going live.

Keplars is best for developers and product teams who want a straightforward email API without complex configuration. It works well for SaaS companies sending user notifications, e-commerce stores handling order emails, and marketing teams running broadcast campaigns. The usage-based pricing and free trial make it easy to start small and scale up. It's not an AI tool — it's a reliable infrastructure play for email delivery.

Non-AI Developer Tools — Other

#developer tools#email api#email delivery#email infrastructure#marketing-emails#smtp#startup tools#transactional emails

Key features

What makes it stand out

REST API and SMTP relay to send emails in under 5 clicks

Real-time delivery tracking: see sent, delivered, opened, bounced

Built-in drag-and-drop email editor and HTML editor

100+ native integrations with CRMs, e-commerce, and dev tools

Sandbox testing environment and usage-based pricing with 7-day free trial

Who is Keplars for?

Who benefits most from this tool

sending password resets and order confirmations

running marketing email campaigns with analytics

integrating email into SaaS products

Pricing

Pulse

$1.0/month

5,000 emails / mo
150 emails per hour
1 email accounts
Unlimited API/SMTP
1 webhook
5 AI credits for template
1 team member
1 day data retention
Custom domain
Email scheduling

Orbit

$5.0/month

10,000 emails / mo
500 emails per hour
5 email accounts
Unlimited API/SMTP
5 webhooks
5 AI credits for template
2 team members
7 day data retention
1 custom domain
Email scheduling

Launch

$10.0/month

25,000 emails / mo
3,500 emails per hour
10 email accounts
Unlimited API/SMTP
10 webhooks
10 AI credits for template
5 team members
30 day data retention
5 custom domains
Email scheduling

Custom

$10.0/month

Unlimited API keys
Unlimited SMTP credentials
30-day data retention
25,000 emails / mo (adjustable)
10 email accounts (adjustable)
10 webhooks (adjustable)
5 team members (adjustable)
5 custom domains (adjustable)
Email scheduling

Trust & presence

Domain Domain registered 2026

Gallery

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