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turboSMTP lets your application send transactional and marketing email through an SMTP relay or HTTP API. These guides take you from account setup and credentials to sending, delivery tracking, and account management.

Choose an integration

SMTP Relay

Configure an email client, CMS, or SMTP library with a host, port, and Consumer credentials.

HTTP API

Send a JSON message from your application with Consumer Key and Secret headers.

Frameworks and Applications

Find configuration guides and the release status of provider integrations.

SDKs and Examples

Choose a supported library or use HTTP examples in your language.

Create an account and credentials

Register through the dashboard. Free-plan activation is subject to account review; check free-plan setup for the steps. The Free allowance is up to 200 emails per day. See pricing for the current validity period and feature limits. Create credentials under Settings → Integrations → API Keys → Edit. Use the Consumer Key as your SMTP username and Consumer Secret as your SMTP password. For HTTP calls, pass them as consumerKey and consumerSecret headers. Enable the sending or management permission needed by your integration.

Global and EU sending

turboSMTP is an Italian company with European sending infrastructure. Choose the appropriate host: Both SMTP hosts support STARTTLS on 587, 2525, and 25, and implicit TLS on 465 and 25025. Use the base URL guide for management hosts and data-residency considerations.

After your first send

Feature availability, retention, dedicated IPs, and support channels depend on your plan. See plans and billing before relying on a feature or trial.