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Build with UGMail from day one. Our Developer Docs provide everything you need to integrate business email into your applications—from authentication and mailbox provisioning to domain management and email protocols. Simply create an account, generate your API credentials, and start building.

What UGMail is

Before diving deeper, let’s first understand what UGMail is. As explained earlier, UGMail is a modern email hosting platform designed for businesses and individuals. UGMail offers five subscription plans: Free, Starter, Business, Enterprise, and Enterprise Plus. Your subscription plan determines the level of features and integration capabilities available to your account. In simple terms, the higher your plan, the more developer features your integration can access. For example, the Free and Starter plans do not include API access or SMTP credentials. These features are available on eligible paid plans, allowing you to build more advanced integrations with UGMail. To learn more about our plans, pricing, feature availability, API limits, and integration capabilities, visit the Pricing & Features page before you begin building your integration.

Key features

API-Driven Provisioning

Create domains and mailboxes instantly with our REST API. Automate provisioning using cURL, Python, Node.js, or any HTTP client.

Open Email Protocols

Connect with SMTP, IMAP, POP3, JMAP, CalDAV, CardDAV, and WebDAV using industry-standard protocols.

Built to Scale

Provision one mailbox or millions with a scalable platform designed for businesses of every size.

Enterprise Reliability

Built on redundant infrastructure with a 99.99% uptime SLA and secure tenant isolation for maximum reliability.

Who UGMail is for

UGMail is the right tool for teams and developers who need to own their email infrastructure, not rent a shared black box. Common use cases include:

Business Email Hosting

Create professional email addresses for your business with secure, reliable hosting, custom domains, and support for all major email clients.

AI Agent Email

Give autonomous AI agents a real SMTP/IMAP inbox to send, receive, and process email as part of automated workflows—no forwarding hacks or shared accounts.

Multi-Domain Management

Manage multiple business domains from a single account. Provision mailboxes, aliases, and email settings across all your domains with ease.

Transactional Email

Send transactional and notification emails using your own domain, SMTP relay, and authenticated DNS records for reliable delivery..

Next steps

Quickstart

Get your token, add a domain, and send your first email in under a minute.

Authentication

Learn how Bearer token auth works and see code examples in three languages.

API Reference

Browse every Management API endpoint with request and response schemas.

Protocols Overview

Learn the server addresses and ports for SMTP, IMAP, JMAP, and more.
Last modified on August 12, 2026