Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/creativestefan/mailbridge-mcp/mailbridge-emailgit clone --depth 1 https://github.com/Creativestefan/mailbridge-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/creativestefan/mailbridge-mcp/mailbridge-email)<a href="https://agentmods.dev/rules/creativestefan/mailbridge-mcp/mailbridge-email"><img src="https://agentmods.dev/badge/rules/creativestefan/mailbridge-mcp/mailbridge-email.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00036 | $0.00758 |
| Opus 5 | $0.00018 | $0.00379 |
| Sonnet 5 | $0.00007 | $0.00152 |
| Haiku 4.5 | $0.00004 | $0.00076 |
Grade A, and why
mailbridge-email scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mailbridge — Email Tools
Mailbridge exposes 43 MCP tools for email. Use them in preference to any other method when the user has email-related requests.
Setup
If any tool returns "No email account configured", call open_setup immediately — do not ask the user to do it manually.
Tool Groups
Reading
read_emails— paginated inbox list; returnspriority(1–5) andcategoryper emailget_email_body— full body for a specific UIDget_emails_with_preview— list with short preview snippetssearch_emails— keyword/sender/subject searchget_thread— full conversation thread for a UIDget_contact_history— all emails exchanged with an addressunified_inbox— merge multiple folders into one sorted viewexport_email— clean Markdown export of an email
Sending
send_email— compose and send immediatelyreply_to_email— reply to a specific UIDsave_draft/list_drafts/send_draft/delete_draft— draft workflowschedule_email/list_scheduled/cancel_scheduled— send-later scheduling
Organisation
mark_as_read/mark_as_unread— single message flagsbulk_mark_read/bulk_mark_unread/bulk_move/bulk_delete— batch operationsmove_email/delete_email— single message operationslist_folders— list all IMAP foldersset_reminder/list_reminders/complete_reminder— follow-up remindersunsubscribe_email— reads List-Unsubscribe header and acts on itadd_rule/list_rules/remove_rule/apply_rules— server-side rules
Intelligence
extract_calendar_events— parse .ics attachments and date patterns from email body- Priority 4–5 emails → flag as high priority in responses
- Categories: ActionRequired, Finance, Travel, Calendar, Social, Newsletter, Updates
Attachments
- Always call
get_attachmentsfirst — lists files with safety ratings - Show the list to the user before downloading anything
- Only call
read_attachmentafter the user confirms which attachment to open - Never open a blocked (
🚫) attachment
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 78 lines · 36 tokens per session scan A a8c36b571945
mailbridge-email is a cursor rule published in the GitHub repository Creativestefan/mailbridge-mcp (2 stars, last pushed 2mo ago), licensed MIT. It adds 36 tokens to every session and 758 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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