Email infrastructure that scales with confidence.
High-volume senders and regulated teams need more than a fast API. They need security they can verify, access controls they can govern, and support that answers when it matters. That's what Keplars is built for.
Built for teams operating at scale.
The cost of outgrowing a generic ESP.
Most email providers are built for the first million sends. Enterprise teams feel the cracks after that.
- Shared IP reputation you don't control
- Seat-based pricing that punishes growth
- No visibility into who changed what
- Support tickets that sit for days
- Rigid rate limits that cap your roadmap
- Migrating providers just to unlock volume
Keplars starts you on OAuth sending through Gmail or Outlook, and moves you to a fully verified custom domain when you're ready, without touching your integration. Role-based access control and team tools keep growing teams organized, and custom volume plans mean your rate limits scale with your roadmap instead of against it.
Security your team can actually verify.
No vague assurances. Here's exactly how Keplars protects your infrastructure and data.
Infrastructure & Hosting
Security Practices
- All communication (API, dashboard, and email endpoints) is secured with HTTPS/TLS encryption.
- Credentials and API keys are stored using secure hashing and encryption practices.
- API keys can be rotated or revoked at any time from the dashboard.
- Webhooks are verified with digital signatures to prevent spoofing.
Access Control & Governance
- Role-based access control (RBAC) lets you scope what each team member can see and do.
- Access to Keplars infrastructure and data is restricted to authorized personnel on a need-to-know basis.
- Team collaboration tools keep account activity contained to the people who need it.
Compliance & Certifications
- SOC 2 Type I audit and GDPR readiness review are currently in progress.
- Underlying infrastructure providers (AWS, Leaseweb) maintain industry-recognized security and compliance standards.
- A zero-tolerance spam policy and CAN-SPAM/GDPR/CASL enforcement protect your sending reputation.
Built to support how enterprise teams operate.
Governance, reliability, and support aren't add-ons. They're part of the same platform.
Access & Governance
- Role-based access control (RBAC)
- Team collaboration tools
- Scoped API keys, rotated on demand
- Signed webhook verification
Deliverability at Scale
- OAuth sending via Gmail & Outlook
- Custom domain sending with SPF/DKIM/DMARC
- Same API from first email to peak volume
- No migration required as you grow
Reliability & Redundancy
- Multi-provider infrastructure (AWS, Leaseweb, SUMMIT)
- Geographically distributed systems
- Regular backups with failover protection
- Continuous infrastructure monitoring
Integration & Extensibility
- REST API & SMTP relay
- Webhooks for delivery, opens, clicks, bounces
- SDKs for faster integration
- Sandbox mode for safe testing
Support
- 24/7 customer support
- Direct line to our security team
- Guided onboarding for high-volume migrations
- Custom contracts via Sales
Compliance Readiness
- Zero-tolerance spam policy
- CAN-SPAM, GDPR & CASL enforcement
- SOC 2 Type I audit in progress
- Public Trust Center & security docs
Why enterprise teams switch to Keplars
| Generic ESP | Keplars |
|---|---|
| Shared IP reputation you don't control | Deliverability backed by Gmail, Outlook & your verified domain |
| Seat-based pricing that penalizes growth | Usage-based plans, custom volume on request |
| Ticket queues for support | 24/7 support, every tier |
| Manual, ad-hoc access management | Built-in role-based access control |
| Separate transactional & marketing tools | One platform for every email you send |
| Opaque security posture | Public Trust Center & documented security practices |
| Rebuild integrations to unlock volume | Same API from your first email to enterprise scale |
Compliance roadmap
We're transparent about where we are, not just where we're headed. Enterprise readiness is an ongoing investment.
| Initiative | Status |
|---|---|
| SOC 2 Type I Audit | In Progress |
| GDPR Readiness Review | In Progress |
| Encryption at Rest & In Transit | Implemented |
| Vendor Security Review Process | Implemented |
One integration. Every team, governed.
Team Collaboration
Bring your whole org onto one account with RBAC to match how your teams are actually structured.
Signed Webhooks
Verified, real-time delivery, open, click, and bounce events feed straight into your systems.
Multi-Domain Sending
Send from Gmail or Outlook via OAuth, or your own verified domain with SPF, DKIM, and DMARC.
24/7 Support
A direct line to support and our security team, at every plan tier, not just the top one.
Ready to bring your enterprise email in-house?
Talk to our team about custom volume, security reviews, and onboarding your organization onto Keplars.
