Email Operating System

The email platform that runs your client operations.

ONIMAIL turns every inbound message into pipeline — contact, deal, task, and meeting — with a Client Graph your team and AI agents share. One click. Full provenance.

  • Mail → Business
  • Client Graph
  • Agent API
  • Mail provenance
inbox · acme.com

Sarah Keller

Partnership proposal

Finance

Invoice #2847

Product

Q4 roadmap review

Partnership proposal

sarah.keller@partner.co

Summary

12-month co-marketing agreement, €48k budget. Response requested by Friday. Suggested next step: executive call.

ReplyCreate dealSchedule meeting

Built for teams that sell and deliver

Agencies, consultancies, and commercial teams use ONIMAIL as the system of record around client communication — not another disconnected inbox.

Unified inbox

Triage, search, and thread context for every conversation — with AI summaries and intent signals when you need them.

CRM on every thread

Contacts, deals, tasks, and calendar events created from email in one click. No copy-paste between tools.

Document layer

Attachments indexed to Drive. Contracts, invoices, and proposals tied back to the client record.

Scheduling

Booking pages on your domain. Prospects pick a slot; your team stays in the same workspace.

Team & domain

Mailboxes on your company domain. Role-based access for sales, ops, and leadership.

Agent-native API

REST endpoints and webhooks designed for AI agents — send mail, sync CRM, and react to inbox events programmatically.

Email as system of record

One timeline per client: messages, deals, meetings, and files — without exporting to a separate CRM.

Automations from the inbox

Turn inbound mail into contacts, opportunities, tasks, and calendar events in a single action.

API-first architecture

Programmatic access to mail, CRM, documents, and bookings. Webhooks for your existing stack.

Built for AI agents

Any agent can send email, create CRM records, and subscribe to events — with API keys and documented endpoints.

Agent-friendly

Let your agents send mail and run workflows

ONIMAIL is designed for autonomous software: sales agents, support bots, ops automations, and custom LLM pipelines can send messages, update CRM, and listen to webhooks — without brittle screen-scraping or SMTP workarounds.

  • Send mail via POST /api/v1/messages/send with API keys
  • Create contacts, deals, and tasks from agent workflows
  • Receive signed webhooks on CRM and inbox events
  • Interactive API docs for fast agent tool configuration
Explore the agent API
agent → onimailtool call
# Sales agent sends a follow-up after a CRM trigger
POST /api/v1/messages/send
Authorization: Bearer oni_live_...

{
  "to": "prospect@company.com",
  "subject": "Next steps on your proposal",
  "html": "<p>Hi — following up as discussed.</p>",
  "track_opens": true
}

# Webhook: crm.deal.created → your agent orchestrator
X-Onimail-Signature: sha256=...

Mail → Business

Inbound email → live business state

One button in the inbox creates the contact, deal, follow-up task, and meeting — then renders the Client Graph with risk signals and mail provenance. Your CRM exists because the email created it.

  • Provenance: every entity traced to the source message
  • Client Graph: deals, tasks, docs, bookings in one view
  • Agent API: POST /api/v1/automate with the same pipeline

# Mail → Business — 8 seconds

Contact created — sarah@partner.co

Deal — Partnership proposal · nouveau

Task — Next step: Sarah Keller · J+1

Event — Call: Sarah Keller · +2 days

Client Graph

3 deals · 2 open tasks · 1 upcoming event

⚠ Client silent 12 days — follow up

Go live in three steps

From signup to production mailboxes.

01

Create your organization

Invite teammates and assign mailboxes under a single workspace.

02

Connect your domain

MX, SPF, DKIM, and DMARC configured with guided DNS setup.

03

Operate from one place

Email, pipeline, files, and meetings — without switching apps.

Developer platform

Integrate with your stack

Humans and agents use the same API: send mail, sync CRM, manage documents, and react to signed webhooks. Full reference documentation included.

API documentation
POST /api/v1/messages/send201 Created
curl https://mail.nexafoundry.ai/api/v1/messages/send \
  -H "Authorization: Bearer oni_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "to": "client@company.com",
    "subject": "Proposal attached",
    "html": "<p>Hello,</p>",
    "track_opens": true
  }'

Pricing

Transparent monthly billing. Upgrade as your team grows.

Free

€0

per month

  • 3 mailboxes
  • 1 custom domain
  • Core email
Create workspace

Pro

€29

per month

  • Unlimited mailboxes
  • 5 domains
  • Mail → Business + Client Graph
  • Agent API & webhooks
  • Standard support
Start 14-day trial

Business

€79

per month

  • Everything in Pro
  • Unlimited domains
  • Priority support
  • Onboarding session
Contact sales

Move your team to ONIMAIL

Professional email on your domain — for teams and the agents that work alongside them.

Create workspace