SMTP Email API · High-Deliverability

Tovanix SMTP Email API complete feature set:

• High deliverability: DKIM / SPF / DMARC fully authenticated, rotating IP reputation pools
• 3-line integration: standard SMTP protocol + HTTP API dual mode
• Template management: versioned storage + variable personalization, HTML / plain-text dual format
• Campaign sending: contact group targeting, scheduled sending, A/B testing
• Real-time tracking: opens / clicks / bounces / unsubscribes with Webhook callbacks
• Multi-account smart rotation, daily / monthly quotas, feature flags by plan tier
• Drop-in replacement for SendGrid / Mailgun / Resend, 10K emails free first month
• Use cases: OTP emails, notifications, marketing, triggered emails

Frequently Asked Questions

How is deliverability ensured?

Smart rotation across multiple SMTP accounts plus a DKIM / SPF authentication wizard, with full open / click / bounce / unsubscribe tracking and automatic bounce handling.

How do I integrate?

Standard SMTP protocol or a REST API in two lines of code; versioned templates with variable substitution, scheduled sending, failure retries and webhook events.

What is it best for?

Both transactional mail (signup verification, invoices, alerts) and marketing campaigns targeted by contact group, with plans that scale by volume.

Related pages: Cloud Service · Domain / Server / Email Routing All-in-One · SMS Verification · Global Virtual Numbers · Developer Solution