Custom domains, AI-powered inbox, advanced security, and team collaboration — all in one platform trusted by 7,000+ businesses worldwide.
From sending and receiving to deliverability, security, and compliance — GrapphenMail covers the full email lifecycle.
Rich text editor with mail merge, scheduling, templates, S/MIME signing, and attachment support up to 50 MB.
AI auto-categorizes, summarizes threads, suggests smart replies, and scores email importance.
Shared mailboxes, email assignment, internal notes, comments, and Open/In Progress/Resolved workflows.
Add unlimited domains, verify ownership, auto-check MX/SPF/DKIM/DMARC/BIMI records, and rotate DKIM keys.
Composite deliverability scoring, IP warmup scheduler, inbox placement testing across Gmail/Yahoo/Outlook.
TOTP 2FA, passkeys, SAML SSO, DLP policies, GDPR tools, retention policies, immutable audit logs.
CalDAV/CardDAV sync with Apple Calendar, Thunderbird, and Android. Public booking pages with RSVP.
700+ REST endpoints, GraphQL, webhooks (CloudEvents 1.0), OAuth 2.0 authorization server, and SCIM 2.0.
White-label support, reseller console, per-tenant branding, subdomain routing, and Stripe billing integration.
AI handles the heavy lifting — so your team can focus on relationships, not triage.
AI-powered — trained on email patterns
From authentication to encryption, GrapphenMail protects every message, mailbox, and account with enterprise security standards.
Integrate with Okta, Azure AD, and any SAML 2.0 IdP for seamless enterprise single sign-on.
Hardware security keys and biometric authentication — phishing-resistant by design.
Full email authentication stack with automated record generation and rotation every 48 hours.
Per-mailbox certificate management for end-to-end email signing and encryption.
Define keyword/regex patterns to block or quarantine outbound emails with sensitive data.
Every action timestamped with user ID, IP, and user agent. Export-ready for compliance.
Right-to-erasure workflows, data export, consent tracking, and retention policy automation.
AI-powered BEC and phishing risk scoring with admin dashboard and one-click reporting.
A complete developer platform with REST API, GraphQL, webhooks, OAuth 2.0, and SCIM 2.0 — fully documented and production-ready.
POST /api/v1/emails/send
Authorization: Bearer {api_key}
{
"from": "hello@yourdomain.com",
"to": ["client@company.com"],
"subject": "Q4 Proposal",
"html": "<p>Hi {{first_name}},</p>",
"attachments": ["proposal.pdf"],
"schedule_at": "2026-01-15T09:00:00Z",
"track_opens": true,
"track_clicks": true
}Complete CRUD for emails, mailboxes, domains, contacts, calendar, billing, and more. Bearer token auth with rate limiting.
Real-time delivery of email.received, email.sent, email.bounced events with retry logic and delivery logs.
Full authorization code flow for third-party app integrations. Scoped tokens with user consent.
Automate user provisioning from Okta, Azure AD, and any SCIM 2.0 IdP.
Mirror of REST API as a fully typed GraphQL schema — query exactly what you need.
No hidden fees. Start free, scale when ready. Cancel anytime.
Get started with email. No credit card required.
Perfect for freelancers and small teams.
For growing businesses that need more power.
Custom plans for large organisations. Contact us.
Native apps for every platform — mobile and desktop.
Connect your domain, create mailboxes, and start sending with DKIM/SPF/DMARC — all from a single dashboard.
No credit card required · Free plan available · Cancel anytime