LobsterMail

Email infrastructure for AI agents — create inboxes, send and receive email, search, threads, and webhooks.
Connect it
In Keystile Automations → Connections → New connection, choose LobsterMail and sign in. Your AI tools and workflows then use it through Keystile; they never see the password or key.How connecting works.
Try it from your AI tool
Using Keystile, in LobsterMail: delete inbox (Permanently delete an inbox and release its address. This action cannot be undone).What it can do (10 actions)
| Action | What it does | Changes data |
|---|---|---|
| Create Inbox | Create a new email inbox on LobsterMail. | Yes |
| Custom API Call | Make a custom API call to a specific endpoint | Yes |
| Delete Inbox | Permanently delete an inbox and release its address. This action cannot be undone. | |
| Get Account | Get account details including subscription tier, usage, and sending limits. | |
| Get Email | Get a single email with full body content. | |
| Get Inbox | Get details for a single inbox including its address, status, and settings. | |
| List Emails | List emails in a specific inbox. | |
| List Inboxes | List all email inboxes on the account. | |
| Search Emails | Search emails across inboxes using full-text search and optional filters. Rate limited to 30 requests/minute. | |
| Send Email | Send an email from one of your LobsterMail inboxes. Requires a verified account (Tier 1+). | Yes |
Start a workflow when… (5 triggers)
- New Email Received — Triggers instantly when a new email is received in an inbox.
- New Email Thread — Triggers when a brand-new conversation (thread) is started in an inbox.
- Thread Reply Received — Triggers when someone replies to an existing email thread. Useful for follow-up and support automation.
- Email Bounced — Triggers when an outbound email fails to deliver. Use this to update CRM records, retry with a different address, or alert your team.
- Email Sent — Triggers when an outbound email is successfully delivered. Use for audit logs, CRM updates, or confirming delivery.
How Keystile protects it
Every LobsterMail action is checked before it runs, whether it comes from an AI tool or a workflow. 3 of its actions change data; your rules, limits and budgets decide whether each is allowed, held for a person or stopped, and it all goes into the signed record.
Use LobsterMail with your AI assistant — safelyClaude, Cursor or ChatGPT do the work; Keystile checks every action first.
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