MyMailer is an all-in-one email service from Cheomsoft Co., Ltd., designed for businesses that need reliable bulk email and automated messaging. It offers dedicated servers, fixed IP addresses, and support for multiple domains, with distributed configurations available for organizations requiring scalable delivery. Customers can send campaigns through a web interface or connect their systems using REST APIs, databases, agents, and SMTP, including relays from services such as Outlook and Google.

Features include contact-list integration, templates, a drag-and-drop editor, delivery and engagement statistics, and options for large attachments. MyMailer also supports automated transactional messages, including shopping notifications, privacy notices, donation receipts, invoices, and payroll statements. For sensitive documents, it can match recipient-specific PDFs and send them with encryption.

Its DNS checker helps verify sending-domain authentication, while IP reputation management, maintenance, technical support, and feature upgrades are included in applicable plans. The service also offers an MCP connection for AI assistants to analyze campaign results and suggest future sends, with execution subject to staff approval