Telnyx Email
Guides for setting up and troubleshooting the Telnyx Email API — sending domains, DNS, suppressions, deliverability, batch sending, and sandbox testing.
12 articles
- Getting started with Telnyx EmailSend your first email with Telnyx in a few steps: get an API key, add and verify a sending domain, send a message, and confirm delivery.
- Setting up your email sending domainAdd a sending domain to Telnyx, publish its DNS records at your registrar, and verify it. Includes plain-language explanations of ownership, SPF, DKIM, DMARC, and MX records.
- Troubleshooting email domain verificationDomain verification not passing? Work through the real causes: missing or mistyped records, propagation delay, truncated DKIM values, wrong hosts, SPF conflicts, and degraded domains.
- Why didn't my email arrive?A step-by-step triage for email that was not delivered: separate message processing from recipient delivery, inspect paginated events, bounces, suppressions, domain errors, limits, and spam placement.
- Managing email suppressions and unsubscribesUnderstand suppression reasons, profile- and group-scoped unsubscribe, paginated listing and deletion, and auto-detected CSV import/export limits.
- Setting up and troubleshooting Telnyx Email webhooks
- Understanding Telnyx Email errors and message size limits
- Preventing duplicate emails with idempotency
- Creating and sending email templates
- Scheduling and cancelling an email send
- Sending email in batches: limits, results, and safe retriesSend up to 1,000 messages per batch, interpret indexed results, and retry safely with whole-request idempotency.
- Testing Telnyx Email safely with sandbox recipientsUse eight deterministic sandbox recipients to test delivery outcomes, webhooks, and polling without real mail delivery.