Overview
ImprovMX is an email forwarding service with a REST API that lets you programmatically manage domains and forwarding rules — mapping email aliases to real destination addresses. It is useful for adding custom domain email to projects without running a mail server. An API key is required; a free tier allows one domain with up to 25 aliases.
Beginner Tip
ImprovMX is not for sending or receiving raw email — it forwards mail from a custom domain (e.g., [email protected]) to an existing inbox. The API lets you add and update these forwarding rules programmatically rather than through the web dashboard.
Available Data
The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.
Example Response
Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.
{
"message_id": "msg_abc123def456",
"status": "delivered",
"to": "[email protected]",
"subject": "Welcome!",
"timestamp": "2025-01-15T10:30:00Z"
} Field Reference
success Indicates whether the API request was processed successfully domains List of domain objects associated with your account, each containing domain name, aliases, and plan info domain.domain The registered domain name (e.g., example.com) configured in ImprovMX domain.aliases Array of alias objects for the domain, each with alias (local part) and forward (destination email) fields domain.active Whether the domain is currently active and forwarding emails errors Key-value map of validation errors returned when a request fails (e.g., invalid email format) Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://api.improvmx.com/v3/domains/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.
Metadata Score Breakdown
Estimated from metadata — endpoint not independently tested
Metadata estimate · endpoint not independently tested
Technical Specifications
Related Tags
Alternatives to ImprovMX
Technical alternatives for different use cases.
Email forwarding for custom domains
Bulk email sending and marketing automation
Simple email forwarding without full email service
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