Keplars
Transactional & marketing email infrastructure with delivery visibility and sandbox testing.
- Paid· from $10/month
- API Available

What is Keplars?
Keplars is an Email Marketing tool. Transactional & marketing email infrastructure with delivery visibility and sandbox testing. Keplars is a paid tool, starting at $10/month. A free trial of 7 days is available. It is aimed at product teams and developers.
Keplars provides transactional and marketing email infrastructure with full delivery visibility, sandbox testing, and scalable solutions. It allows sending emails in under five clicks and offers a free plan.
Built for product teams and developers.
Features
Email Infrastructure
Supports transactional and marketing emails with delivery visibility and sandbox testing.
Full Delivery Visibility & Analytics
Sandbox Testing Environment
OAuth Email API
Integrates with Gmail and Outlook via OAuth authentication.
Send Emails Without SMTP
Custom Domain Email Sending
DKIM Support
DMARC Support
AI-Powered Email Templates
Visual HTML Email Editor
Email Scheduling API
Webhook Notifications
Use cases
- Send transactional emails with full delivery visibility
- Test email configurations in a sandbox environment
- Schedule emails using an API for automated delivery
- Integrate with Gmail and Outlook via OAuth for email sending
- Create and send emails using AI-powered templates
- Monitor email delivery performance with analytics tools
Who it's for
Pros & cons
Pros
- Free plan available
- Public API available
- Integrates with Zapier, n8n, Supabase, Vercel
Cons
- No free plan available
Pricing
Paid — paid plans start at $10/month. Free trial of 7 days available.
| Plan | Price |
|---|---|
| LaunchPopular | $10 / month |
| Custom | $1 |
Developer & API
Public REST API available
- Authentication
- API Key, Bearer Token, Oauth2
- Webhooks
- Supported
Security & compliance
- SOC 2
- ISO 27001
- GDPR
- Two-factor authentication
- Encryption
- Data deletion
As stated on Keplars's website — not independently verified by AiByts.
FAQ
What is Keplars?
Keplars is an Email Marketing tool. Transactional & marketing email infrastructure with delivery visibility and sandbox testing. Keplars provides transactional and marketing email infrastructure with full delivery visibility, sandbox testing, and scalable solutions. It allows sending emails in under five clicks and offers a free plan.
Is Keplars free?
No, Keplars is a paid tool. A free trial is available.
How much does Keplars cost?
Keplars offers 2 plans: Launch ($10 / month) and Custom ($1).
Does Keplars have an API?
Yes, Keplars offers a public REST API with webhooks for building custom integrations.
Who should use Keplars?
Keplars is built for product teams and developers. Common uses: send transactional emails with full delivery visibility, test email configurations in a sandbox environment, schedule emails using an API for automated delivery and integrate with Gmail and Outlook via OAuth for email sending.
What does Keplars integrate with?
Keplars integrates with Zapier, n8n, Supabase and Vercel.
What are the best alternatives to Keplars?
Similar tools on AiByts include Loops, Deliveryman.ai, Brew, EmailTemple and SocLeads.
Details are compiled from Keplars's website and public sources, last verified Oct 5, 2026. Features and pricing change — confirm on the official site before you buy.
Try Keplars
Paid · from $10/month
Tags
- Email Infrastructure
- Email Sandbox Testing
- Usage-Based Pricing
- OAuth Email API
- AI-Powered Templates
- Email Scheduling
- Webhook Notifications
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