Deliver Every Email with Confidence
Reliable email delivery starts with trusted infrastructure - not guesswork.
Start Sending Instantly or Scale with Your Own Domain
Built for every stage of your email journey.
Whether you're launching your first product or sending millions of emails each month, Keplars adapts to your workflow.
OAuth Email Sending
Connect Gmail or Microsoft 365 in minutes with secure OAuth, and start sending instantly with no DNS setup or SMTP credentials to manage.
Custom Domains
When you're ready to scale, verify your own domain with SPF, DKIM, and DMARC to build long-term sender reputation and full brand ownership.
Deliverability Built Into Every Send
Great deliverability goes beyond authentication. Keplars continuously monitors the signals mailbox providers care about most, helping you maintain strong sender reputation as your email volume grows.
Everything working behind the scenes
- SPF, DKIM & DMARC validation
- Bounce & complaint handling
- Automatic suppression management
- Reputation-aware sending
- Secure TLS delivery
- Smart retry handling
- Transactional & marketing email support
- Real-time delivery monitoring
Build Sender Reputation with Automated Mailbox Warmup
A healthy sender reputation doesn't happen overnight.
Keplars Mailbox Warmup gradually increases your daily sending volume while generating natural engagement signals to help establish trust with mailbox providers.
Whether you're using a brand-new inbox or a newly verified domain, Warmup continuously monitors delivery health and automatically adjusts sending speed to protect your reputation.
Included Features
See What Happens After Every Email
Complete visibility from send to inbox.
Track every event in real time to understand delivery performance, troubleshoot issues, and optimize future campaigns.
Monitor
Everything you need to measure and improve deliverability from a single dashboard.
Optimize Every Email Before You Send
Catch deliverability issues before they reach your customers.
Every email is automatically analyzed against industry best practices before it's sent. Keplars reviews your content, structure, authentication, and technical configuration to identify potential issues that could impact inbox placement.
Whether you're sending a transactional email or a marketing campaign, you'll receive actionable recommendations to improve deliverability with confidence.
Keplars checks for
- Spam risk & content quality
- Subject line best practices
- Image-to-text balance
- Broken links & HTML validation
- SPF, DKIM & DMARC authentication
- Unsubscribe & compliance requirements
- Mobile & email client compatibility
Know what's working. Fix what isn't. Send with confidence.
Protect Your Sender Reputation
Email reputation is earned over time and easy to lose.
Keplars helps protect it with infrastructure designed for reliable inbox placement.
Designed for Better Deliverability
Keep critical emails isolated. Maintain a healthier sender reputation. Deliver with confidence.
Why Teams Choose Keplars
| Traditional Email Platforms | Keplars |
|---|---|
| Manual SMTP configuration | OAuth or SMTP support |
| DNS required before sending | Start instantly with OAuth |
| Separate mailbox warmup tools | Built-in Mailbox Warmup |
| Basic delivery logs | Real-time analytics & health insights |
| Multiple services to manage | Everything in one platform |
Every Important Email Deserves the Inbox
Whether you're sending your first verification email or millions of customer notifications, Keplars gives you the infrastructure, visibility, and automation to maximize deliverability from day one.
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