Email InfrastructureBuilt for Agencies

InboxKit scales with your agency from 1 to 1000+ clients without any platform limitations. Our multi-client dashboard provides centralized management while maintaining complete isolation between client accounts. Each client gets their own dedicated workspace with customized settings, branded domains, unlimited mailboxes, and independent billing. You can set different permissions for team members, create custom workflows, and maintain separate deliverability monitoring for each client. Our infrastructure auto-scales to handle your growth without performance degradation.

Absolutely! InboxKit's advanced workspace management allows you to seamlessly switch between client accounts from a unified dashboard while maintaining strict data separation. Each workspace includes role-based access controls, so you can grant team members specific permissions (view-only, admin, billing access) per client. The platform remembers your preferences for each workspace, including custom views, favorite tools, and notification settings. You can also create workspace templates to quickly onboard new clients with pre-configured settings, and use bulk management features to apply updates across multiple workspaces simultaneously.

InboxKit offers completely flexible billing to match your agency's business model. Choose from agency-direct billing (you pay one invoice), individual client billing (clients pay directly), or hybrid billing (mix both approaches). Volume discounts start at 25 mailboxes (15% off) and scale to 40% off for enterprise volumes. Our detailed usage analytics let you track costs per client, generate white-label invoices, and set up automated billing workflows. You can also add markup to client billing, set spending limits, and receive alerts when clients approach their usage thresholds. All billing is transparent with no hidden fees or setup costs.

InboxKit offers 15+ native integrations with leading outreach platforms including Instantly, SmartLead, Reply, Lemlist, Za-zu, Email Bison, Apollo, Outreach, HubSpot, Salesforce, and Pipedrive. Our REST API and webhook system enable custom integrations with any platform in under 30 minutes. Popular use cases include CRM sync, automated warmup triggers, deliverability alerts, and campaign performance tracking. We provide SDKs for Node.js, Python, and PHP, plus Zapier integration for no-code workflows. Our technical team offers free integration support to ensure seamless connectivity with your existing tools and processes.