mailX tools
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| MAILX_MCP_URL | No | Override the upstream URL (staging/self-hosting) | |
| preferred_provider | No | Default provider for spf_generate (google, mailgun, sendgrid, postmark, amazon-ses, outlook, zoho, fastmail) | |
| default_dkim_selector | No | Default selector used by dkim_check when the call omits dkim_selector | |
| dmarc_aggregate_email | No | Default rua= address for dmarc_generate |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| spf_checkA | Check if a domain has a valid SPF (Sender Policy Framework) DNS record. SPF specifies which mail servers are authorized to send email on behalf of a domain. |
| dkim_checkB | Check if a domain has a valid DKIM (DomainKeys Identified Mail) DNS record for a given selector. DKIM allows the receiver to verify that an email was sent by the domain owner. |
| dmarc_checkA | Check if a domain has a valid DMARC (Domain-based Message Authentication, Reporting & Conformance) DNS record. DMARC tells receiving servers what to do with emails that fail SPF or DKIM checks. |
| bimi_checkA | Check if a domain has a valid BIMI (Brand Indicators for Message Identification) DNS record. BIMI allows brands to display their logo next to authenticated emails in supporting email clients. |
| dmarc_generateA | Generate a DMARC DNS record for a domain. Returns the record name, value, and type ready to be added to DNS. |
| spf_generateA | Generate an SPF DNS record for a domain based on the email provider being used. Returns the record name, value, and type ready to be added to DNS. |
| smtp_checkA | Test an SMTP server connection by attempting to connect and authenticate. Optionally sends a test email to verify full sending capability. |
| imap_checkA | Test an IMAP server connection by attempting to connect and authenticate. Use this to verify email receiving configuration. |
| smtp_finderA | Look up SMTP server settings (host, port, encryption) for a given email provider. Use this to find the correct SMTP configuration for services like Gmail, Outlook, SendGrid, etc. |
| imap_finderA | Look up IMAP server settings (host, port, encryption) for a given email provider. Use this to find the correct IMAP configuration for services like Gmail, Outlook, Yahoo, etc. |
| blacklist_checkA | Check if a domain or IP address is listed in popular email blacklists (DNSBLs). Being blacklisted can severely impact email deliverability. |
| bimi_hostA | Host and serve your BIMI SVG file for email authentication |
| mx_lookupA | Look up MX (Mail Exchanger) records for a domain. Returns the mail servers and their priorities. |
| txt_lookupA | Look up all TXT records for a domain. TXT records contain SPF policies, domain verification tokens, DKIM keys, and other metadata. |
| cname_lookupA | Look up CNAME (Canonical Name) records for a domain. Shows where a hostname aliases to. |
| ptr_lookupA | Reverse DNS lookup. Find the hostname associated with an IP address. A valid PTR record is important for email sending reputation. |
| dns_lookupA | Look up all DNS records for a domain in one query. Returns A, AAAA, CNAME, MX, NS, TXT, and SOA records. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
| audit-deliverability | Run a full deliverability audit on a domain: SPF, DMARC, DKIM, and blacklist checks. Produces a pass/fail summary with copy-pasteable fixes. |
| setup-dns | Generate SPF and DMARC DNS records for a domain based on its email provider, with copy-pasteable values ready to add to DNS. |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| email-deliverability-skill | Guide for diagnosing and fixing email deliverability: SPF, DKIM, DMARC, BIMI, blacklists, SMTP/IMAP. Includes audit workflow, DNS setup, and troubleshooting. |
| email-deliverability-diagnosis | Detailed reference for interpreting combined SPF/DKIM/DMARC/blacklist results and mapping failures to fixes per provider. |
Latest Blog Posts
MCP directory API
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/Mailwarm/mailx-mcp'
If you have feedback or need assistance with the MCP directory API, please join our Discord server