Alternatives
An alternative to Resend, SendGrid and Mailgun
Same kind of API and SMTP, with the price in Brazilian reais or US dollars, the receiving server's answer explained for every email, and a person who sets up your domain with you.
Why teams switch
Price in reais, no IOF
In Brazil you pay in reais. Paying a US provider with a Brazilian card adds 3.5% IOF on every invoice.
Every email explained
The timeline shows the receiving server's real answer and what to do about it, in plain words.
Never suspended in the dark
Gradual pauses with the reason and the numbers, an instant review, and a person within one business day.
DNS done with you
SPF, DKIM and DMARC records ready to copy, created automatically on Cloudflare, or set up with you in a 15-minute call.
Built for AI agents
A remote MCP server lets Claude, Cursor and other agents send, check domains and explain bounces.
No per-user pricing
Price depends only on volume: Pro is 50,000 emails a month and Scale 200,000.
Compare at your volume
Public prices of each service, with the date we checked them. Dollar prices are converted with the IOF a Brazilian card pays abroad.
Calculator
How many emails do you send per month?
Recommended plan
Pro
$19per month
- 50,000 included in the plan
The same volume elsewhere
Each one's cheapest public plan that covers the volume, in US dollars, as published.
| Service | Plan | Per month | Compared with Couryo |
|---|---|---|---|
| Couryo | Pro | $19 | |
| Resend | Pro 50k | $20 | $1 more |
| SendGrid | Essentials 50k | $19.95 | $0.95 more |
| Postmark | Basic 50k | $55 | $36 more |
| Brevo | Starter 50k | $56 | $37 more |
| Mailgun | Foundation 50k | $35 | $16 more |
At this volume, none of them costs less than Couryo.
Public prices checked on October 24, 2026, in US dollars.
What went into the numbers:
- Resend: transactional emails plan (Free is limited to 100 per day).
- SendGrid: Email API plan; the free option is a 60-day trial (100 per day) and is left out; overage is not published.
- Postmark: Basic plan, their cheapest at every tier.
- Brevo: marketing platform priced by emails sent; Free with 300 per day; prices in US dollars as published.
- Mailgun: Free with 100 per day; overage at the lowest published rate ("from"); Foundation and Scale have a free first month, left out.
Estimate. The final amount shows in the dashboard before any charge, and your spending limit always applies.
The Wunka products already send through Couryo
Couryo is made by Wunka, and its own products moved their email here first. They are not customers: they are the same company. Measured in production on 26 October 2026.
- Wunka products sending through Couryo
- 9
- emails delivered in the last 7 days
- 2,202
- bounce rate in the last 7 days
- 1.6%
- spam complaints
- 0
Switching takes minutes
- 1
Create a free account and an API key.
- 2
Add your domain: copy the DNS records, or let us set them up with you.
- 3
Swap the SMTP server or the API key in your app. With Supabase or Lovable it is 4 fields.
Assisted migration is free: we set up SPF, DKIM and DMARC with you in about 15 minutes and watch the first week.
FAQ
- Is it really cheaper?
- It depends on your volume and currency. Around 50,000 emails a month the prices are close; at 200,000 the difference in reais is large. The calculator above uses each service's public price and its check date.
- Do I need to change my code?
- No, if you send by SMTP: swap the server, port, user and password. With the API, change the key and the endpoint; the SDK and docs are on couryo.com/docs.
- Where is the data?
- The infrastructure is in the United States. Processing follows the LGPD, with a public privacy policy and DPA.