Supported Providers

Score CRM supports multiple email service providers through a pluggable provider architecture. Each provider has its own adapter that handles the specific API or SMTP protocol.

Provider Comparison

Provider	Connection Type	Webhooks	Batch Sending
SendGrid	API (v3)	✅ Yes	✅ Yes
SparkPost	API (v1)	✅ Yes	✅ Yes
SMTP.com	API (v1)	✅ Yes	✅ Yes
OCI Mail	SMTP	✅ Yes	❌ Individual
Mailgun	API	✅ Yes	✅ Yes
AWS SES	SMTP/API	✅ Yes	✅ Yes
Generic SMTP	SMTP	❌ No	❌ Individual

SendGrid

Connection type: API-based

Required fields:

• API Key (with Mail Send permissions)

Webhook events supported:

• Delivered, Opened, Clicked, Bounced, Spam Report, Unsubscribed

Notes:

• Uses the /v3/mail/send API endpoint
• Webhook signature verification via ECDSA

SparkPost

Connection type: API-based

Required fields:

• API Key

Webhook events supported:

• Delivery, Open, Click, Bounce, Spam Complaint, Link Unsubscribe

Notes:

• Uses the /api/v1/transmissions API endpoint
• Supports batch sending for high throughput

SMTP.com

Connection type: API-based

Required fields:

• API Key

Webhook events supported:

• Delivered, Opened, Clicked, Bounced, Complained

Notes:

• Uses the /v1/message API endpoint
• HMAC webhook signature verification

OCI Mail (Oracle Cloud)

Connection type: SMTP

Required fields:

• Host, Port, Username, Password

Webhook events supported:

• Standard SMTP bounce notifications

Notes:

• Connects via traditional SMTP protocol
• Individual email sending (no batch API)

Generic SMTP

Connection type: SMTP

Required fields:

• Host, Port, Username, Password

Webhook events:

• None (no event tracking via webhooks)

Notes:

• Works with any SMTP-compatible server
• No automatic event tracking — opens and clicks are still tracked via Score CRM's own tracking pixel and link rewriting, but delivery/bounce events require webhook support from the provider
• Best used as a fallback or for SMTP providers not yet natively supported

Adding a New Provider

Score CRM uses a factory pattern for email providers. Each provider implements a standard interface:

1. initialise() — Set up the provider connection
2. send() — Send a single email
3. sendBatch() — Send a batch of emails (if supported)

Contact your Score CRM administrator if you need support for a provider not listed here.