Mailgun is a transactional email service that lets your Lovable app send email programmatically over the Mailgun API. It’s designed for apps that need reliable delivery for receipts, notifications, password resets, alerts, and reports, with detailed tracking for bounces, complaints, and unsubscribes. With Mailgun, your app can:Documentation Index
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- Send transactional email through the Mailgun API
- Send from a verified sending domain you manage in Mailgun
- Track delivery events such as bounces, complaints, and unsubscribes
- Read message and event metadata for auditing or in-app status
- Read domain and route information from your Mailgun account
Common use cases and example apps
| Example app | Example prompt | Description |
|---|---|---|
| Order confirmations and receipts | Use Mailgun to send order confirmation and receipt emails after checkout. | Send transactional notifications from app events. The app triggers Mailgun email sends whenever a user completes a purchase or status changes. |
| Account lifecycle email | Use Mailgun to send password reset and email-verification messages from noreply@mydomain.com. | Power account-lifecycle email from your own domain. The app generates secure links and sends them through Mailgun using your verified sending domain. |
| Form-to-email apps | Use Mailgun and build a contact form that emails submissions to our support inbox. | Turn form submissions into routed emails. The app validates the submission, formats the content, and sends it to the right recipient via Mailgun. |
| Scheduled reports and digests | Use Mailgun to email a weekly KPI digest every Monday at 9am. | Deliver recurring reports by email. The app compiles the data, renders an email, and sends it on a schedule. |
| Alerts and monitoring | Use Mailgun to email me whenever an order over $1,000 is placed. | Surface high-signal events through email alerts. The app watches for matching events and emails the right people so they can act quickly. |
| Bounce and deliverability dashboard | Use Mailgun and build a dashboard showing bounces, complaints, and unsubscribes from the last 30 days. | Use Mailgun event data to monitor deliverability. The app reads Mailgun events and presents them in-app so you can clean lists and protect sender reputation. |
| Domain status admin page | Use Mailgun and build an admin page that lists our sending domains and their verification status. | Surface Mailgun account state inside your app. The app reads domain information from Mailgun so operators can manage sending without leaving the product. |
How to connect Mailgun
Workspace admins and owners can connect Mailgun. You can create multiple Mailgun connections using different API keys, which is useful for separating environments (for example, development and production), targeting different Mailgun accounts, or using keys with different rate limits. When the connection is created, Mailgun becomes available across all projects in the workspace.Prerequisites
Before connecting Mailgun, make sure you have:- A Mailgun account
- A verified sending domain in that Mailgun account
- A Mailgun Private API key
- The region where your Mailgun account is hosted (EU or US)
- Lovable workspace owner or admin role
All email sent through this connector counts toward your Mailgun plan and is billed by Mailgun, not Lovable.
Step 1: Get a Mailgun Private API key
A Private API key lets your Lovable app authenticate with the Mailgun API. You can create separate keys for different environments or apps. To create a Mailgun Private API key:Open your Mailgun account
Sign in to the Mailgun app with the account that owns your sending domain.
Create or copy a Private API key
Create a new Private API key (give it a descriptive name, for example
Lovable integration) or copy an existing one.Step 2: Connect Mailgun to Lovable
You can create multiple connections using different API keys.Configure the connection
- Display name: name the connection, for example
Mailgun Prod. - API region: select the region your Mailgun account is hosted in (European Union or United States). The default is European Union. The region must match the account the API key belongs to. A US key will not authenticate against the EU API.
- Private API key: paste your Mailgun Private API key.
- Who can access this connection: keep access limited to specific people or invite the entire workspace. See Connection-level access for more information.
Sending from your domain
Mailgun sends email from domains you’ve verified in your Mailgun account. The connector does not configure DNS or verify domains for you. Before sending, make sure your sending domain is set up in the Mailgun app and shows as verified, with the required DKIM and SPF records added at your DNS provider. When prompting Lovable, mention the domain you want to send from (for example,noreply@mydomain.com) so the generated app uses it consistently.
Limitations
The Mailgun connector cannot:- Verify or register sending domains for you (configure these in the Mailgun app first)
- Receive Mailgun event webhooks directly through the connector (you can poll Mailgun’s events API instead, or configure webhooks to a Mailgun-side endpoint outside Lovable)
- Refresh or rotate API keys automatically. To rotate, generate a new key in Mailgun and update the Lovable connection
- Support per-end-user Mailgun authentication (each connection uses a single shared API key, scoped to the workspace)
- Use more than one region per connection (a single connection authenticates against either the EU or US Mailgun API)
How to unlink projects from a connection
Editors and above can remove specific projects from a connection without deleting the connection entirely. The connection will remain available for other projects. To unlink projects:
When unlinked, those projects will no longer have access to through this connection. If a project needs again, you can link it to any available connection.