Email Providers: SendGrid, Mailgun & AWS SES Integration
Email Providers
Connect an email provider to deliver outbound email runs reliably.
SendPromptly handles event ingestion, routing, and delivery orchestration. Your provider handles mailbox delivery and sender reputation.
Provider setup checklist
- Authenticate your sending domain
- Configure sender identity and from-address policy
- Verify webhook and bounce/complaint handling
- Send test traffic before production cutover
Best practices
- Start with one provider per environment
- Monitor bounce and complaint rates continuously
- Rotate credentials and limit provider key scope
Provider selection guidance
Choose your first provider based on team familiarity, deliverability controls, and operational tooling. Most teams optimize for fast setup first, then add advanced routing or backup providers after baseline delivery is stable.
- SendGrid is a common choice for teams that want mature event webhooks and broad ecosystem support.
- Mailgun works well when you want clear event payloads and flexible domain-level configuration.
- Amazon SES is often selected for AWS-native stacks with cost-sensitive high-volume traffic.
No provider is “best” for every workload. What matters most is a clear sender-domain setup, verified DNS, and a reliable webhook feedback loop for bounces and complaints.
Production readiness checklist
Before routing production traffic through a provider, verify each of these items in staging:
- Domain authentication records are fully propagated and verified.
- Sender identities match your template from-address policy.
- Bounce and complaint webhooks are enabled and reach your endpoint.
- Test deliveries succeed for representative recipient domains.
- Your team can trace provider failures in delivery logs without guessing.
Failure patterns to watch
- Authentication drift: DNS records changed or expired, causing sudden delivery failures.
- Suppression blind spots: repeated sends to bounced addresses degrade sender reputation.
- Webhook parsing gaps: provider callback format changes break internal status updates.
- Environment leakage: production credentials used in staging by mistake.
Treat provider integration as a living operational workflow, not a one-time setup step. Review metrics weekly and schedule periodic credential rotation to reduce long-tail risk.