Resend vs Mailgun
Both are alternatives to SendGrid. Here's how they stack up — verified facts, no spin.
Also searched as Mailgun vs Resend — same comparison, one verdict.
Resend
The one developers enjoy — React templates and a clean API.
Resend is transactional email built for the way front-end teams work now: write your templates as React components with react-email, send through a simple API, and get a dashboard that shows what happened without archaeology. Around 20k stars on the open-source react-email library, though the sending service itself is proprietary and hosted. Pricing sits between SES and SendGrid. It earns its place because developer experience genuinely affects whether email templates get maintained, and unmaintained templates are how transactional email quietly rots.
Mailgun
The established competitor — strong on validation and routing.
Mailgun is SendGrid's long-standing rival with a comparable feature set and reputation, plus two things it does distinctly well: email address validation before you send, and inbound routing that parses received mail into your application. Proprietary and hosted, priced per volume with a small free allowance. Listed for the same reason as Render on the Heroku page — many teams comparing this category are choosing between managed vendors, and the honest comparison includes the obvious alternative rather than assuming everyone will self-host.
Side by side
| Resend | Mailgun | |
|---|---|---|
| Sovereignty Score | 36 | 31 |
| Open source | No | No |
| Self-hostable | No | No |
| Local-first | No | No |
| License | Proprietary service (react-email library is MIT) | Proprietary (hosted service) |
| Pricing | Free tier for 3,000/month; paid from about $20/month. Checked 2026-08-05. | Volume-based with a small free allowance; paid tiers from about $15/month. Checked 2026-08-05. |
Resend edges it on the Sovereignty Score, but the right pick depends on the trade-offs below.
Resend
Strengths
- +Best developer experience in the category by some distance
- +react-email lets templates live in your codebase and be reviewed
- +Clean API and a dashboard that is actually readable
- +Cheaper than SendGrid at comparable volume
Trade-offs
- −Proprietary and hosted
- −More expensive than SES for pure transactional volume
- −Younger company with a shorter deliverability record
- −No self-host path
Mailgun
Strengths
- +Strong deliverability record over many years
- +Address validation catches bad addresses before you send
- +Genuinely good inbound routing and parsing
- +Detailed logs and analytics
Trade-offs
- −Proprietary and hosted
- −More expensive than SES for straightforward transactional mail
- −Pricing tiers are harder to read than they should be
- −Support quality varies by plan
Related alternative guides
Facts verified 2026-08-05. Licenses and pricing change — spotted something out of date? That's a correction we want.