Mailboxes as Cattle: Ephemeral Email Infrastructure

Short summary

Email mailboxes can now be provisioned and destroyed via API per test run, shifting from hand-managed accounts to disposable infrastructure. Nylas Agent Accounts enables this 'cattle' model for E2E testing, per-workflow agent identities, and multi-environment separation. Best practices include automatic cleanup, sender allowlisting, and workspace-based policies to prevent orphaned accounts.

• •Ephemeral email accounts reset inbox state per CI run, eliminating test pollution from shared accounts
• •Supports agent workflows: each automation gets a fresh address that tears down automatically
• •Proper cleanup and allowlisting prevent orphaned accounts and sender reputation damage

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