MX18 Personalisation – Use recipient-level and global placeholders to dynamically customize emails per recipient or fallback.

MX18 Error Handling – Learn how to handle HTTP status codes (400, 401, 422, 500, etc.) and MX-specific codes (MX-0001 to MX-0008) for structured responses.

MX18 Send via SMTP – Set up smtp.mx18.com with TLS (port 587), use your API token as password, verify sender. Including Telnet testing and error codes.

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MX18 Send via API – Learn how to send your first email via API. Includes prerequisites, endpoint, request payload, sample response, and field reference.

MX18 Authentication – Secure email delivery via API or SMTP using automatically generated API tokens. View or regenerate tokens in Settings > API Keys.

MX18 Getting Started — Sign in, verify your sender, choose REST API or SMTP, and monitor email activity. Start sending emails with ease and confidence.

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MX18 Developer Docs – Powerful APIs for blazing-fast email delivery, real-time analytics, AI deliverability insights, SMTP support & suppression tools.

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