A messaging layer for your client projects
If you build automations, CRMs, or AI workflows for clients, SendiMessage gives every project a managed messaging channel through one REST API — a dedicated line per client, inbound replies, and webhooks — without your team operating messaging infrastructure.
How agencies use it
Provision a dedicated managed line for each client or sub-account, so sending and replies stay cleanly isolated.
The same REST API and webhook contract across all client builds — learn it once, reuse it everywhere.
Inbound replies arrive as signed webhooks; route each one back to the right client workflow.
Trigger sends from GoHighLevel, HubSpot, n8n, Make, or your own middleware — whatever the client runs.
We review each use case and provision lines with you — no unattended checkout, no surprise activation.
iMessage where supported, SMS fallback where configured, per line.
The per-client pattern
What we don't offer (yet)
We want to be straight with agencies: there is no formal reseller program, revenue share, white-label product, or partner commission today. What exists is a clean API, managed lines you can provision per client, and a team that will work through client projects with you. If a structured partnership would help, tell us what you need — we shape those from real projects, not a brochure.
Bring us a client project
Tell us the stack and the workflow, and we'll map how a managed line fits — and provision one to test with.