Mailgun Setup

Connect your Mailgun account to Optail.

Prerequisites

• A Mailgun account
• A verified sending domain in Mailgun

1. Get Your API Key and Domain

1. Log in to the Mailgun dashboard
2. Go to Settings > API Security
3. Copy your Private API key (or generate a new one)
4. Note your sending domain (e.g., mg.yourdomain.com)

2. Connect in Optail

Via Dashboard

1. Go to Providers > Connect Provider
2. Select Mailgun
3. Enter a display name (e.g., "Mailgun Production")
4. Enter your API key and sending domain
5. Click Connect -- Optail validates by querying your domain info

Via API

curl -X POST https://api.optail.io/v1/providers \
  -H "Authorization: Bearer ms_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "providerType": "MAILGUN",
    "displayName": "Mailgun Production",
    "credentials": {
      "apiKey": "key-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
      "domain": "mg.yourdomain.com"
    }
  }'

3. Verify Your Sending Domain

If you have not already set up your domain in Mailgun:

1. In Mailgun, go to Sending > Domains > Add New Domain
2. Enter your sending domain (recommended: use a subdomain like mg.yourdomain.com)
3. Add the required DNS records:
   • TXT record for SPF
   • TXT records for DKIM (two CNAME records)
   • MX records for receiving (if needed)
   • CNAME record for tracking
4. Click Verify DNS Settings

4. Configure Webhooks (Optional)

To receive delivery events in Optail:

1. In Mailgun, go to Sending > Webhooks
2. For each event type, set the URL to: https://webhooks.optail.io/v1/ingest/mailgun
3. Configure events: Delivered, Opened, Clicked, Bounced (Permanent Failure), Complained, Unsubscribed, Failed (Temporary)

Mailgun requires setting the webhook URL per event type individually.

Credential Reference

Field	Description
apiKey	Mailgun Private API key (starts with key-).
domain	Verified sending domain (e.g., mg.yourdomain.com).