Pros and cons
What Mailgun does especially well — and the limits to anticipate.
Pros
- Reliable, scalable email sending for transactional volumes
- Generous entry plans with tracking, analytics, and webhooks included
- Built-in SPF/DKIM/DMARC management, well-maintained shared IPs
Cons
- 20-40% price increases reported since the Sinch acquisition
- Measured deliverability drop (-27.75% in one year per GlockApps)
- No email templates or automated follow-ups — unsuited for marketing campaigns
Mailgun: when it makes sense.
Solid for pure transactional use; monitor deliverability and regularly compare with SendGrid or Postmark.
Keep if
You send transactional emails from an app and need a reliable developer API. You actively monitor your deliverability and adjust accordingly
- You use it at least once a week
- The monthly cost (€10) is small next to the time it saves you
Challenge if
You want to send marketing campaigns with templates — SendGrid or Brevo fit better. The recent deliverability drop concerns you for critical emails
- You use it less than once a month
- A simple free version or a tool already in your stack would do
