One agent mailbox per tenant in a multi-tenant SaaS

Short summary

A detailed architectural guide for giving each tenant in a multi-tenant SaaS its own dedicated mailbox via Nylas Agent Accounts, eliminating shared-sender problems like cross-tenant deliverability poisoning and reply routing ambiguity. Each tenant gets an isolated grant with its own send identity, policy, and limits, grouped into workspaces. The post walks through provisioning, workspace/policy design, and CLI commands for implementation.

• •Shared sender model fails on deliverability, inbound routing, per-tenant policy, and clean offboarding
• •Each tenant gets its own Nylas grant (Agent Account) with isolated send identity and limits
• •Workspaces group grants by domain; policies bundle quotas and spam settings inherited by all grants in a workspace

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