Mcp4mail vs Ruv Swarm
A side-by-side look at the Mcp4mail and Ruv Swarm MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
M
Mcp4mailDeveloper ToolsYour IMAP mailbox as an MCP server: read, search and (if you allow it) organize mail. Open source.48FairAuth: oauth 2.0Verdict: choose Mcp4mail for developer tools work; choose Ruv Swarm for developer tools as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
MChoose Mcp4mail when
- You need dedicated capabilities in the Developer Tools domain.
- Its auth model fits you: OAuth 2.0.
- You have the keys it needs:
HITCH_RESOURCE_URI, ACTIVE_RECORD_ENCRYPTION_PRIMARY_KEY, ACTIVE_RECORD_ENCRYPTION_DETERMINISTIC_KEY, ACTIVE_RECORD_ENCRYPTION_KEY_DERIVATION_SALT. - You want tools like
list_mail_accounts, get_mail_account, list_folders.
Choose Ruv Swarm when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | M Mcp4mail | |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 48/100 · Fair | 51/100 · Good |
| Install command | Not confirmed yet | Confirmed |
| Transport | — | Local subprocess (stdio) |
| Auth | OAuth 2.0 | No auth required |
| Pricing | Free | Free |
| Required env vars | HITCH_RESOURCE_URIACTIVE_RECORD_ENCRYPTION_PRIMARY_KEYACTIVE_RECORD_ENCRYPTION_DETERMINISTIC_KEYACTIVE_RECORD_ENCRYPTION_KEY_DERIVATION_SALT |
Tools & capabilities
Mcp4mail tools 14
list_mail_accountsLists the mail accounts you connected, with the ids the other tools take.get_mail_accountShows the connection details of one account (never its password).list_foldersLists the folders of one account.search_messagesSearches by subject, sender, recipients, attachment names and date.get_messageReads one message.get_attachmentDownloads an attachment of a message: a short-lived link, or with `inline: true` the file itself (up to 5 MB) inside the MCP answer.search_contactsFinds addresses you have corresponded with.get_outgoing_statusTells whether an email handed to `send_message` has gone out.set_flagsFlags a message or marks it read / unread. *Write.*move_messageMoves a message to another folder. *Write.*trash_messageMoves a message to Trash. *Write.*create_folderCreates a folder. *Write.*- +2 more on the listing page
Ruv Swarm tools
No tool names declared yet. Check the project README from the listing page.
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.
Mcp4mail
No confirmed install command for Mcp4mail yet — follow the setup steps linked from its listing page rather than a guessed package name.
Ruv Swarm
{
"mcpServers": {
"ruv-swarm": {
"command": "npx",
"args": [
"-y",
"ruv-swarm@latest"
]
}
}
}
Frequently asked questions
Mcp4mail is categorized under Developer Tools and uses an install path we have not confirmed yet. Ruv Swarm belongs to Developer Tools and uses a local stdio subprocess. Pick Mcp4mail for developer tools work and Ruv Swarm for developer tools.
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. Mcp4mail has no confirmed install command yet — follow its own setup instructions.
Mcp4mail is listed as free. Auth: oauth 2.0. Ruv Swarm 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 mcp4mail and ruv-swarm as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Mcp4mail has a quality signal of 48/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. Ruv Swarm has 51/100 (Good) with 3 views, 0 installs and 385 GitHub stars.
