Agent Email vs Email Spam Tester
A side-by-side look at the Agent Email and Email Spam Tester MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Agent Email for communication work as a local process; choose Email Spam Tester for communication over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Agent Email when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- You want tools like
list_emails, read_email, search_emails.
Choose Email Spam Tester when
- You need dedicated capabilities in the Communication domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
- You want tools like
get_test_address, wait_for_report, get_report.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Communication | Communication |
| Quality signal | 64/100 · Good | 82/100 · Excellent |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Remote HTTP/SSE |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Verified |
| GitHub stars | 6 | 2 |
| Directory activity | 3 views 0 installs 0 upvotes | 6 views 0 installs 2 upvotes |
| Tools | 27 | 4 |
| Full listing | View Agent Email | View Email Spam Tester |
Tools & capabilities
Agent Email tools 27
list_emailsList recent emails with filtering by unread status, folder, sender, and limit. Use offset for pagination. A row with `isDraft: true` is an unsent draft — it has NOT been sent, and its `receivedAt` is provider-supplied metadata, not evidence of delivery. Never describe such a row as a sent, delivered, or received email.read_emailRead the full content of an email by ID, transformed to token-efficient markdown. When the response has `isDraft: true` the message is an unsent draft — it has NOT been sent, and `receivedAt` is provider-supplied metadata, not evidence of delivery; never describe it as a sent, delivered, or received email. Set format to 'html' to get the raw body HTML instead of markdown — use this when you need to preserve inline styling (colour, background-colour, underline, strikethrough) that the markdown conversion discards, e.g. to change one sentence of a formatted body and leave the rest alone. Raw HTML costs far more tokens than markdown, so leave the default alone unless you need the styling; check `bodyFormat` (`text` means the message had no HTML part, so do not send it as HTML) before writing a body back, and never write one back with `bodyTruncated: true` — you do not have the whole body. strip_quoted_history and strip_signatures are markdown-shaped text transforms and are NOT applied when format is 'html'; the HTML is returned verbatim. To write it back, call create_draft/update_draft with format: 'html' AND force_black: false — force_black defaults to true and wraps your HTML in a force-black div, so leaving it on nests another wrapper on every round trip. Set strip_quoted_history to true to drop the terminal "On … wrote:" / Outlook-header / `>`-prefix reply chain and replace it with a short marker. Set strip_signatures to true to remove detected signatures and legal disclaimers; it defaults to false here for MCP compatibility even though the core action defaults to true.search_emailsSearch emails using full-text query across one or all mailboxes. Use offset for pagination. Results include unsent drafts: a row with `isDraft: true` has NOT been sent — its `receivedAt` is provider-supplied metadata, not evidence of delivery. Never describe such a row as a sent, delivered, or received email.get_mailbox_statusGet mailbox connection status, unread count, and warningslist_mailboxesList every configured mailbox: its logical `name` (pass this as the `mailbox` argument to other tools), its `emailAddress`, provider, connection status, and which one is the default. Reports mailboxes that failed to authenticate too, so it stays useful for diagnosing a broken setup.get_threadRetrieve all messages in a conversation thread by message ID. A thread can end with an unsent draft reply: a message with `isDraft: true` has NOT been sent, so it is not a sent reply — though earlier sent replies from the same author may exist elsewhere in the thread. Never describe such a message as a sent, delivered, or received email.send_emailCompose and send a new email. Gated by send allowlist. Draft mode bypasses allowlist. If a send fails with SEND_STATUS_UNKNOWN, the message may already have been delivered; do not resend without checking Sent Items. An identical send repeated within the duplicate window is refused with a DUPLICATE_SEND_* code instead of delivering twice; pass allow_duplicate: true only when a human has decided to send the same message again.reply_to_emailReply to an email within an existing thread. Default reply_all=true cc's the original thread; pass reply_all=false to reply only to the sender. Send path validates all effective recipients against the send allowlist; draft path bypasses. If a send fails with SEND_STATUS_UNKNOWN, the message may already have been delivered; do not resend without checking Sent Items. An identical reply repeated within the duplicate window is refused with a DUPLICATE_SEND_* code instead of delivering twice; pass allow_duplicate: true only when a human has decided to send the same reply again.create_draftCreate an email draft with to/cc/bcc recipients. Supports body_file with YAML frontmatter (to, cc, bcc, subject, reply_to, format). Use reply_to for threaded reply drafts, where to and subject are derived from the parent message and may be omitted; pass reply_all=false with reply_to to draft a sender-only reply.send_draftSend a previously created draft. Enforces send allowlist before sending. Rate-limited. If a send fails with SEND_STATUS_UNKNOWN, the message may already have been delivered; do not resend without checking Sent Items. Sending the same draft id twice within the duplicate window is refused with a DUPLICATE_SEND_* code instead of delivering twice; pass allow_duplicate: true only when a human has decided to send it again.update_draftUpdate a draft email. Body edits are refused for reply drafts; non-reply body edits require replace_body=true and replace the body wholesale. Subject, recipients (to/cc/bcc), and attachments remain editable. Allowlist is enforced at send_draft time, not here.cancel_scheduled_sendCancel a pending provider-held scheduled send. Only verified scheduled drafts can be cancelled.- +15 more on the listing page
Email Spam Tester tools 4
get_test_addressReserve a single-use address to send a draft email to, for a full check. Returns the address and the URL its report will appear at. The address accepts exactly one message and expires after an hour. The email has to be sent by the person, from the platform or mailbox they really send from: half the checks read what that platform adds. The report covers 42 checks (SPF, DKIM, DMARC, reverse DNS, TLS, blocklists, content, links, the Gmail and Yahoo bulk-sender rules) and a plan of what to fix. lang is decided now because the message arrives minutes later over SMTP, which carries no hint of who is waiting for it. What wait_for_report returns quotes check lines in English whatever it is set to; the person following report_url sees their own language.wait_for_reportWait until the message arrives and has been analysed, then summarise it. Call it after the email has been sent to the address from get_test_address. Blocks rather than returning "not ready yet": an agent told to poll writes a sleep loop and usually gives up before the analysis finishes. Provider placement keeps filling in for up to 30 minutes after the report; get_report reads the latest.get_reportRead a report by its slug without waiting, with provider placement so far. The report stays at its link for good and anyone with the link can read it: the checks, the score, the fix plan, and the subject and sender of the email.get_message_sourceThe message exactly as it was received: headers, both bodies, source. Useful when a finding points at a header and the agent needs to see what it actually sent rather than what it believes it sent. The message is kept for an hour after it arrives and then deleted; within that hour anyone with the slug can read it. After that only the report remains.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Agent Email
{
"mcpServers": {
"agent-email": {
"command": "npx",
"args": [
"-y",
"email-agent-mcp"
]
}
}
}
Email Spam Tester
{
"mcpServers": {
"email-spam-tester": {
"url": "https://email-spam-tester.com/mcp"
}
}
}
Frequently asked questions
Agent Email is categorized under Communication and uses a local stdio subprocess. Email Spam Tester belongs to Communication and uses a remote HTTP/SSE transport. Pick Agent Email for communication work and Email Spam Tester for communication.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Agent Email has no declared pricing — check the project's own site. Email Spam Tester is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add agent-email and email-spam-tester as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Agent Email has a quality signal of 64/100 (Good) with 3 views, 0 installs and 6 GitHub stars. Email Spam Tester has 82/100 (Excellent) with 6 views, 0 installs and 2 GitHub stars.