Features
Everything behind a reliable send
Good transactional email comes down to four jobs: prove the mail is yours, get it out, find out what happened to it, and protect your reputation as you grow. Prontuno has a feature for each, and they all share the same domains, logs, and events.
One email, end to end
email_01kxwz4b…
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Authenticate
example.com
SPF · DKIM · DMARC
Verified
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Send
POST /v1/emails
or SMTP on port 587
202 Accepted
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Track
email.delivered
Webhook to your endpoint
200
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Scale
203.0.113.24
Dedicated IP, PTR mail.example.com
Active
Stage by stage
How the features fit together
Every transactional email passes through the same four stages, in the same order. Each feature below takes care of one of them.
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Authenticate
example.com → Verified
Mailbox providers check that a sender is allowed to use a domain before they trust its mail. Authentication comes first because every later stage depends on it.
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Set up SPF, DKIM, and DMARC.
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Send
POST /v1/emails → 202 Accepted
Your application hands messages to Prontuno through a REST API or standard SMTP. Both routes use the same verified domains and appear in the same email logs.
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Send email with one HTTP request.
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Connect existing apps over SMTP.
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Track
email.delivered → 200
Once a message leaves, it can be delivered, deferred, bounced, or rejected. Webhooks bring each outcome back to your application as it happens.
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Get delivery events in real time.
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Scale
203.0.113.24 → Active
As volume grows, the reputation of the sending IP matters more. A dedicated IP ties that reputation to your mail alone.
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An IP reserved for your team.
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Choosing a route
The API or SMTP?
Both routes deliver through the same infrastructure, so the choice comes down to who writes the code that sends the mail. You can use both on the same account.
POST https://api.prontuno.net/v1/emails
Email API
Suits code your team writes and maintains.
- Up to 1,000 emails in one request
- Safe retries with idempotency keys
- Structured errors your code can act on
- Domains and suppressions managed from the same API
smtp.prontuno.net:587
SMTP relay
Suits apps that already send mail.
- Works with frameworks, CMSs, and off-the-shelf tools
- Needs only a host, a port, and credentials
- No change to how messages are built
- The same email logs as API sends
Request access
Tell us what you send. We will take it from there.
We review every application within 24 hours to keep our sending pool clean. Approved accounts start with 10,000 free credits.