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Mail and Calendar

Mail and Calendar

Codebolt has first-class integrations for email and calendar. Agents can read inboxes, send messages, schedule meetings, and trigger off of incoming mail. Used for:

  • Automating repetitive email workflows (triage, follow-ups, responses).
  • Scheduling work around team availability.
  • Receiving webhook-equivalent data from senders without a webhook endpoint.

Supported providers​

  • Gmail / Google Calendar — OAuth
  • Microsoft 365 / Outlook — OAuth
  • IMAP + SMTP — for self-hosted or other mail systems
  • CalDAV — generic calendar support

Connecting an account​

Settings → Integrations → Mail (and Calendar). Click Connect, choose the provider, OAuth flow opens in a browser, you authorize, the account appears in the list.

Mail tools​

  • codebolt_mail.list_inbox — list recent messages
  • codebolt_mail.read_message — read a specific message
  • codebolt_mail.send_message — send a new message
  • codebolt_mail.reply — reply to a thread
  • codebolt_mail.mark_read, codebolt_mail.archive, codebolt_mail.label

All permission-gated. By default, no agent has mail write access.

Calendar tools​

  • codebolt_calendar.list_events — upcoming events
  • codebolt_calendar.create_event — schedule something
  • codebolt_calendar.update_event, delete_event
  • codebolt_calendar.find_availability — "when are X and Y both free?"

Backed by calendarSchedulerService for the availability math.

Triggering an agent from incoming mail​

Useful for "when an email arrives matching X, run agent Y". Configure in an agent manifest:

# .codebolt/agents/support-triage/agent.yaml
triggers:
  - type: mail
    match:
      from: "*@customer-domain.com"
      subject_contains: ["bug", "issue", "problem"]

When a matching email arrives, the agent is spawned with the email as input. The agent can reply, label, archive, or escalate depending on its prompt.

Scheduling agents around meetings​

An agent can check your calendar before doing work that might conflict:

user: run the nightly build if I'm free tonight

agent:
  → calendar.find_availability(after: 19:00, duration: 2h)
  → found free slot 20:00-22:00
  → scheduling build for 20:00

Background agents can also self-schedule — a cron trigger can be combined with a calendar check to avoid running during "do not disturb" periods.

Security and scope​

Mail and calendar access is sensitive. Best practices:

  • Scope OAuth tightly. Grant only the permissions you need (read-only if the agent doesn't need to send).
  • Allowlist agents carefully. Don't blanket-allow codebolt_mail.* to every agent.
  • Audit send actions. Route every outgoing email through a review hook so you see what agents are sending.
  • Dry-run for new agents. Test mail-sending agents in a dry-run mode that logs what they would send without actually sending.
# .codebolt/hooks/audit-mail.ts
export default {
  phase: "before_tool_call",
  match: { tool: "codebolt_mail.send_message" },
  handler: async (ctx) => {
    ctx.log.info("agent sending mail", { to: ctx.args.to, subject: ctx.args.subject });
    // You could also require human approval here:
    // return { verdict: "deny", reason: "mail send requires human approval" };
    return { verdict: "allow" };
  },
};

Rate limits​

Mail providers have send limits (Gmail: ~500/day for free accounts, more for Workspace). Agents that send mail should be aware:

  • Don't run mail-sending agents in tight loops.
  • Batch sends where possible.
  • Monitor provider quotas via codebolt provider usage.

See also​