Manage every client, inbox, domain, and wallet in one place.
SimpleInboxes gives agencies the operating layer around cold email infrastructure: isolated workspaces, clear billing, domain recovery, out-of-stealth inbox pricing, and human support when client ops get messy.
Agency workflows without the spreadsheet tax.
The goal is not just cheaper inboxes. It is cleaner client operations, clearer billing, and fewer domains thrown away when deliverability gets damaged.
See every client from one operating view
Track active inboxes, domains, spend, renewal risk, workspace health, and pending actions without switching accounts or maintaining a spreadsheet.
Keep client operations cleanly separated
Each client can have its own workspace, domains, inboxes, wallet controls, and billing history. Your team still manages everything from one login.
Bill clients the way your agency actually works
Use client-level wallets and billing settings when you want separate cards, clean statements, or a workspace that pays for its own usage.
Stop replacing domains every time a client burns one.
Agencies waste money when every reputation issue turns into a new domain purchase, new DNS setup, new inboxes, and another client conversation. Domain Recovery gives you a path to heal domains and bring them back into rotation.
- Park damaged domains in a recovery pool
- Track health-light status before reactivation
- Reactivate when the domain is ready instead of rebuilding from scratch
Domain Recovery Pool
Park burned or underperforming domains in recovery instead of replacing them immediately. For agencies, this can save real money because domain churn compounds fast.
Out-of-stealth pricing at scale
Microsoft 365 is $2.25/mo and Google Workspace is $2.50/mo with out-of-stealth pricing, plus no minimums. Start small for a client, then scale when the campaign is proven.
Developer API + MCP
Automate orders, DNS checks, workspace reads, failed-step retries, and mailbox exports. Connect Codex or Claude via MCP for chat-driven infrastructure ops.
Custom human support
Get a real person for migration questions, provider issues, recovery planning, bulk client moves, and messy edge cases that generic chatbots cannot solve.
Client spend control
Use workspace-level balances and billing views to see who is spending, what renews next, and where credits are being consumed.
US-based infrastructure
Keep client inboxes on US-routed infrastructure across Google, Microsoft, Private SMTP, and Azure-style setups so deliverability does not depend on offshore shared pools.
Custom support for the work that actually breaks.
Agency issues are rarely generic. You need help with client migrations, DNS edge cases, upload issues, recovery decisions, and billing structure. We keep human support close so you are not stuck translating infrastructure problems through ticket queues.
See Developer + MCP docs →Build your next client workspace without rebuilding your ops.
Start small, top up when ready, and scale client-by-client with clean billing, recovery workflows, and developer automation from day one.