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 |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| spf_checkB | 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_checkA | 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. |
TDQS
Scored across 17 tools
Each tool has a distinct purpose focused on specific email-related DNS checks, server testing, or configuration lookups. For example, dkim_check and spf_check target different authentication mechanisms, while imap_check and smtp_check test different server types, ensuring clear boundaries and no overlap.
All tools follow a consistent verb_noun pattern using snake_case, such as bimi_check, dmarc_generate, and smtp_finder. This uniformity makes the tool set predictable and easy to navigate, with no deviations in naming conventions.
With 17 tools, the count is slightly high but reasonable for the comprehensive email diagnostics and configuration domain. It covers various aspects like DNS records, server checks, and lookups, though it might feel a bit heavy compared to more streamlined servers.
The tool set provides complete coverage for email infrastructure, including DNS-based authentication (SPF, DKIM, DMARC, BIMI), server testing (SMTP, IMAP), and lookup utilities (MX, CNAME, TXT). There are no obvious gaps, allowing agents to handle full email configuration and troubleshooting workflows.