Multi-tenant bulk email operations platform
Plan campaigns, connect providers and reply mailboxes, warmup domains carefully and inspect delivery, retries, access, and reconciliation from one workspace.
Capabilities
OppenMailer connects the work before, during, and after a send: infrastructure, audiences, content, controlled warmup, approvals, delivery, replies, retries, reconciliation, and operational access.
Run mailbox-centric warmup with explicit schedules, private or platform-managed pools, provider-aware limits, reply threading, cooling, and reconciliation. Warmup supports a measured ramp; it never guarantees inbox placement.
Connect a private AI provider or your preferred MCP client, including ChatGPT, Claude, Cursor, and VS Code, to draft templates, prepare campaigns, map audiences, explain delivery results, and suggest follow-ups. Keep material outputs review-first, choose scoped permissions, inspect access logs, and revoke connections at any time.
Manage SMTP, Resend, SES, SendGrid, Gmail, SendByte, and platform routes behind one provider contract that considers sender compatibility, health, quotas, message needs, and fallback eligibility.
Connect Gmail, Microsoft, or standards-based IMAP mailboxes, keep warmup traffic separate from customer replies, preserve thread identity, and project matched messages into the right workspace workflows.
Campaign, warmup, provider, billing, retention, notification, and export work uses leased jobs, retries, cancellation, dead letters, replay controls, reconciliation, and process heartbeats instead of hidden browser state.
Import CSV or XLSX data, reconnect Google Sheets, map dynamic variables, build reusable HTML and text templates, attach hosted assets, prepare campaigns, and keep everything isolated by workspace.
Track delivery events, replies, bounces, failures, route decisions, queue pressure, provider health, warmup progress, billing reconciliation, and assistant access from one operational system.
Use workspace-derived tenancy, recent-auth checks for sensitive changes, encrypted credentials, scoped tokens, safe redirects, request limits, audit records, and explicit operator approval for consequential AI actions.
Pay for your plan using supported regular currencies or cryptocurrency, giving your team more flexibility across local and international payment methods.
Operating model
Keep members, domains, providers, audiences, templates, credentials, limits, and audit history inside a tenant-scoped operating boundary.
Add sending providers and reply mailboxes, verify domains, configure warmup, and optionally connect a private AI provider or an external assistant.
Prepare campaigns and AI-assisted drafts, review consequential actions, send through a compatible route, and follow delivery, replies, retries, and reconciliation.
Pricing
Compare workspace, provider, and sending limits in NGN or USD. Provider limits and production verification still apply.
Get started
Start sending on shared infrastructure and prove the workflow before you invest in custom setup.
For growing teams
Bring your own infrastructure, own your sending reputation, and give a lean team room to scale.
For scale and control
Maximize deliverability, live visibility, and reply control once email becomes revenue-critical.
For advanced integrations
Shape a commercial plan around your scale, routing rules, procurement needs, and integration requirements.
Connect only what you need, keep consequential actions reviewable, and retain visibility from the first draft through delivery and reconciliation.
Create a workspace