Choose by the task.
AgentAddress gives a task a return address for callbacks, email replies, and saved JSON context. AgentMail provides full email accounts with sending, threading, and conversation management.
Choose AgentAddress when an agent needs to hand off a callback URL or email address, finish its run, and retrieve what arrived later in one ordered queue.
Choose AgentMail when the main job is managing two-way email conversations, custom email domains, or many customer inboxes.
| Capability | AgentAddress | AgentMail |
|---|---|---|
| Task return path | HTTPS ingress and email share one ordered queue | Email accounts and mail-event webhooks |
| Agent setup | One unauthenticated create call; saved private credential | Programmatic agent signup, including receive-only signup without a human email |
| Outbound | Plain text to verified contacts; reply support; configured sending domain required | Send, reply, forward, drafts, scheduled sending |
| Saved context | 32 JSON keys and 65,536 bytes per address | Email messages, threads, labels and attachments |
| Advanced mail | Single-recipient sending; no full thread/search/domain-management API | Threads, search, custom domains and multi-tenant pods |
| Price today | Free; no billing | Free tier; Developer $20/month |
| Planned paid price | $17/month; unavailable, allowances not finalized | Current pricing available on its site |
| SOC 2 | No certification or compliance claim | Advertises SOC 2 compliance |
Public documentation checked October 4, 2026. This is a contract comparison, not a benchmark or a claim of equivalent capacity. Sources: AgentMail pricing, inbox capabilities, and agent onboarding.