MailX Email Deliverability

skills: {'id': 'spf_check', 'name': 'spf_check', 'description': '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.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'dkim_check', 'name': 'dkim_check', 'description': '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.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'dmarc_check', 'name': 'dmarc_check', 'description': '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.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'bimi_check', 'name': 'bimi_check', 'description': '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.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'dmarc_generate', 'name': 'dmarc_generate', 'description': 'Generate a DMARC DNS record for a domain. Returns the record name, value, and type ready to be added to DNS.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'spf_generate', 'name': 'spf_generate', 'description': '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.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'smtp_check', 'name': 'smtp_check', 'description': 'Test an SMTP server connection by attempting to connect and authenticate. If from_email and to_email are provided, the tool may attempt to send a test email. Only provide these fields if you are authorized to send from the account and intentionally want to test full sending capability.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}, {'id': 'imap_check', 'name': 'imap_check', 'description': 'Test an IMAP server connection by attempting to connect and authenticate. Use this to verify email receiving configuration.', 'tags': [], 'examples': None, 'input_modes': None, 'output_modes': None}; uptime_30d 1.0%; p95 370.7ms; conformance: pass

How to connect

https://themailx.com/mcp

curl -X POST https://themailx.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'