Maildev MCP
An MCP (Model Context Protocol) server for MailDev. Its 12 documented tools cluster into read & search, run & execute, delete, maildev status.
People who need email tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in C#.
VERIFIED ACTIVE
LAST COMMIT 2026-03-19 · ★ 2 · #75 OF 75 MAINTAINED EMAIL · VERIFIED 2026-08-25
MIT · C# · how we verify → /methodology
01 · Evidence
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
license MIT - declared in the repository
registry namespace io.github.pierre3 is GitHub-verified and matches the repo owner
02 · What Maildev MCP can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
What you can build
With this server connected, an agent can start the MailDev Docker container with configurable SMTP port, API port, authentication, and TLS, stop and remove the MailDev Docker container, check the running status of MailDev, and get the details of an email by ID, including attachment information.
Capability map
Tools grouped from the project's README - what Maildev MCP lets an agent do.
read & search
5 tools - e.g. Retrieve the list of received emails; Get the details of an email by ID, including attachment information; Get the HTML body of an email by ID
ListEmails · GetEmail · GetEmailHtml · SearchEmails · GetAttachmentContent
run & execute
2 tools - e.g. Start the MailDev Docker container with configurable SMTP port, API port, authentication, and TLS; Stop and remove the MailDev Docker container
StartMaildev · StopMaildev
delete
2 tools - e.g. Delete a single email by ID; Delete all received emails
DeleteEmail · DeleteAllEmails
Maildev Status
1 tool - e.g. Check the running status of MailDev
MaildevStatus
Wait For Email
1 tool - e.g. Wait until a new email matching given criteria arrives (useful for test automation)
WaitForEmail
Verify Attachment
1 tool - e.g. Verify that an email attachment matches the original data by byte-by-byte comparison
VerifyAttachment
Latest releases
v1.0.1 · 2026-03-19
v1.0.0 · 2026-03-19
03 · Who maintains Maildev MCP
maildev-mcp is maintained by pierre3. We track 2 MCP servers from pierre3 - 2 actively maintained, 6 combined GitHub stars, oldest repo from Mar 2026. Full record: all servers from pierre3.
04 · Facts
- repository
- github.com/pierre3/maildevmcp
- category
- email - ranked #75 of 75 actively-maintained email servers as of 2026-08-25.
- registry
- io.github.pierre3/maildev-mcp (active, first published 2026-03-19)
- packages
- nuget:MailDevMcp
05 · Maildev MCP FAQ
Is Maildev MCP still maintained?
Yes - as of 2026-08-25, its last commit was 2026-03-19. We re-verify nightly.
What can Maildev MCP do?
With this server connected, an agent can start the MailDev Docker container with configurable SMTP port, API port, authentication, and TLS, stop and remove the MailDev Docker container, check the running status of MailDev, and get the details of an email by ID, including attachment information.
06 · Alternatives to Maildev MCP
Alternatives to Maildev MCP
Maintained email servers if Maildev MCP isn't the fit.
- Emailmd Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails. ★ 1,303 · 2026-08-15
- Sessy - Amazon SES observability Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats. ★ 914 · 2026-08-18
- Mu News, web search, mail, markets, weather, places, files, calendar, contacts. 67 tools, one endpoint. ★ 387 · 2026-08-24
- Hqbase Connect AI agents to your self-hosted HQBase shared email workspace. ★ 295 · 2026-08-25
- SendGrid MCP server for SendGrid - global transactional + marketing email (Twilio-owned) ★ 269 · 2026-08-12
- Atomic Mail Programmable email inbox for AI agents - JMAP, PoW auth, stdio MCP server. ★ 266 · 2026-08-11
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