We need email logs that developers can actually debug. Which providers are good for that?

If developers need to debug email delivery problems, the best providers are the ones with detailed event logs, webhook support, message search, and clear rejection/error reasons.

Good choices for debug-friendly email logs

1) Postmark

• Very developer-friendly.
• Great message timelines and delivery events.
• Easy to search by message ID, recipient, subject, etc.
• Strong focus on transactional email, so logs are usually clean and actionable.

Best for: transactional emails and teams that want simple, readable logs.

2) SendGrid

• Broad feature set and lots of log data.
• Event webhooks for delivered, deferred, bounced, dropped, opened, clicked, etc.
• Good for building your own debugging dashboard.
• Can be a bit more complex/noisy than Postmark.

Best for: teams that want lots of data and flexibility.

3) Mailgun

• Strong logs and event tracking.
• Helpful for debugging bounces, suppression issues, and domain/auth problems.
• API-oriented, with good message/event querying.

Best for: engineering-heavy teams and apps with custom mail workflows.

4) Amazon SES + CloudWatch / SNS

• Very cheap and scalable.
• Logs are possible, but not as developer-friendly out of the box.
• You often need to wire up CloudWatch, SNS, or event destinations to get good visibility.

Best for: teams already on AWS that are comfortable assembling their own observability.

5) SparkPost

• Good event data and analytics.
• Supports detailed delivery tracking and webhooks.
• Less commonly chosen today than some alternatives, but still solid.

Best for: teams that want detailed eventing and analytics.

What “good logs” should include

Look for providers that show:

• Message ID
• Timestamped events: accepted, queued, sent, delivered, bounced, deferred, blocked, dropped
• SMTP response codes / error messages
• Suppression list reasons
• Webhook payloads
• Search by recipient, subject, or tag
• Raw message headers if possible

My practical recommendation

• If you want the best developer debugging experience: Postmark
• If you want maximum control and data: SendGrid or Mailgun
• If you want lowest cost at scale and can build the tooling: SES

If you want, I can also give you:

1. a comparison table of these providers for logging/debugging, or
2. a list of features to require in an RFP/vendor checklist.