AgentLair vs Mailtrap
A side-by-side look at the AgentLair and Mailtrap MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose AgentLair for communication work as a local process; choose Mailtrap for communication as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose AgentLair when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
AGENTLAIR_API_KEY, AGENTLAIR_EMAIL. - You want tools like
claim_address, send_email, check_inbox.
Choose Mailtrap when
- You need dedicated capabilities in the Communication domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
MAILTRAP_API_TOKEN, MAILTRAP_ACCOUNT_ID, DEFAULT_FROM_EMAIL, MAILTRAP_SANDBOX_ID, MAILTRAP_TEST_INBOX_ID, MAILTRAP_ORGANIZATION_ID, MAILTRAP_ORGANIZATION_API_TOKEN. - You want tools like
send-email, batch-send-transactional-email, batch-send-bulk-email.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Communication | Communication |
| Quality signal | 60/100 · Good | 64/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | AGENTLAIR_API_KEYAGENTLAIR_EMAIL | MAILTRAP_API_TOKENMAILTRAP_ACCOUNT_IDDEFAULT_FROM_EMAILMAILTRAP_SANDBOX_IDMAILTRAP_TEST_INBOX_IDMAILTRAP_ORGANIZATION_IDMAILTRAP_ORGANIZATION_API_TOKEN |
| Verified owner | Community listing | Community listing |
| GitHub stars | 5 | 66 |
| Directory activity | 2 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 15 | 125 |
| Full listing | View AgentLair | View Mailtrap |
Tools & capabilities
AgentLair tools 15
claim_addressClaim a new @agentlair.dev email address for your agent. No DNS or SMTP setup required. Free tier: up to 3 addresses.send_emailSend an email from an @agentlair.dev address you own to any recipient. No SMTP setup needed.check_inboxCheck the inbox for an @agentlair.dev address. Returns recent messages with sender, subject, and received time.read_messageRead the full content of a specific email message, including the body. Use message IDs from check_inbox.list_addressesList all @agentlair.dev addresses claimed on your account.vault_putStore a value in the AgentLair Vault. Use this to persist API keys, secrets, or any data your agent needs across sessions. Best practice: encrypt sensitive data client-side before storing (the server stores whatever you send).vault_getRetrieve a stored value from the AgentLair Vault by key name.vault_listList all keys stored in your AgentLair Vault (metadata only, values not returned).vault_deleteDelete a key and all its versions from the AgentLair Vault.calendar_create_eventCreate a calendar event on your AgentLair calendar. Events are published via iCal feed for human subscription (Google Calendar, Apple Calendar, Outlook).calendar_list_eventsList events on your AgentLair calendar. Optionally filter by date range.calendar_delete_eventDelete an event from your AgentLair calendar by event ID. Use calendar_list_events to find event IDs.- +3 more on the listing page
Mailtrap tools 125
send-emailSend an email to your recipient email address using Mailtrap Email API. You can send emails to multiple recipients at once.batch-send-transactional-emailSend a batch of transactional emails in one Mailtrap API call. Shared fields go on `base`; per-recipient overrides go in `requests[]`. Each request must include `to`.batch-send-bulk-emailSend a batch of bulk emails (Mailtrap bulk-stream API) in one call. Shared fields go on `base`; per-recipient overrides go in `requests[]`. Each request must include at least one of `to`/`cc`/`bcc`.create-templateCreate a new email templatelist-templatesList the account's email templates with page-token pagination (`token`, `per_page`). Pages are offsets over the newest-first list, so after deleting templates list again from token 1 instead of continuing with the next token.get-templateGet a single email template by ID, including subject, category, and HTML/text body.update-templateUpdate an existing email templatedelete-templateDelete an existing email templatesend-sandbox-emailSend an email in sandbox mode to a test inbox without delivering to your recipientsbatch-send-sandbox-emailSend a batch of emails in sandbox mode to a test inbox in one Mailtrap API call. Shared fields go on `base`; per-recipient overrides go in `requests[]`. Requires `sandbox_id` or the MAILTRAP_SANDBOX_ID env var.get-sandbox-messagesGet list of messages from the sandbox test inboxshow-sandbox-email-messageShow sandbox email message details and content from the sandbox test inbox. Optionally include spam report (SpamAssassin score) and HTML analysis (client compatibility) for email testing workflows.- +113 more on 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.
AgentLair
{
"mcpServers": {
"agentlair": {
"command": "npx",
"args": [
"-y",
"@agentlair/mcp@latest"
],
"env": {
"AGENTLAIR_API_KEY": "YOUR_AGENTLAIR_API_KEY_HERE",
"AGENTLAIR_EMAIL": "YOUR_AGENTLAIR_EMAIL_HERE"
}
}
}
}
Mailtrap
{
"mcpServers": {
"mailtrap": {
"command": "npx",
"args": [
"-y",
"mcp-mailtrap"
],
"env": {
"MAILTRAP_API_TOKEN": "YOUR_MAILTRAP_API_TOKEN_HERE",
"MAILTRAP_ACCOUNT_ID": "YOUR_MAILTRAP_ACCOUNT_ID_HERE",
"DEFAULT_FROM_EMAIL": "YOUR_DEFAULT_FROM_EMAIL_HERE",
"MAILTRAP_SANDBOX_ID": "YOUR_MAILTRAP_SANDBOX_ID_HERE",
"MAILTRAP_TEST_INBOX_ID": "YOUR_MAILTRAP_TEST_INBOX_ID_HERE",
"MAILTRAP_ORGANIZATION_ID": "YOUR_MAILTRAP_ORGANIZATION_ID_HERE",
"MAILTRAP_ORGANIZATION_API_TOKEN": "YOUR_MAILTRAP_ORGANIZATION_API_TOKEN_HERE"
}
}
}
}
Frequently asked questions
AgentLair is categorized under Communication and uses a local stdio subprocess. Mailtrap belongs to Communication and uses a local stdio subprocess. Pick AgentLair for communication work and Mailtrap 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.
AgentLair has no declared pricing — check the project's own site. Mailtrap has no declared pricing — check the project's own site. 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 agentlair and mailtrap as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, AgentLair has a quality signal of 60/100 (Good) with 2 views, 0 installs and 5 GitHub stars. Mailtrap has 64/100 (Good) with 0 views, 0 installs and 66 GitHub stars.