Trial Domains vs Custom Domains for Agent Accounts

A team I'll generalize from experience: they spend a sprint planning their AI agent's email integration, then stall for a week because nobody can get a DNS change through the infrastructure review queue. The agent code was done. The mailbox didn't exist yet, because the mailbox needed a domain, and the domain needed MX records, and the MX records needed a ticket. This is exactly the gap trial domains exist to close. With Nylas Agent Accounts (currently in beta), every mailbox lives on a domain...