# AI agents for sales follow-up > Keep autonomous follow-up in the original conversation while preserving review and escalation controls. ## Problem Send-only APIs lose the reply context that determines whether a lead is interested, blocked, or asking for a person. ## Reference workflow 1. Create an inbox for each sales identity or campaign. 2. Classify replies using the complete thread. 3. Prepare a draft for sensitive or high-value responses. 4. Use labels to track interested, objection, handoff, and closed states. ## AgentMailer model Provision a persistent mailbox and A2A endpoint together. The agent receives scoped credentials, complete thread context, workspace isolation, and realtime events without borrowing a person's account. Canonical URL: https://agentmailer.ai/use-cases/sales-follow-up