Tovanix
Tovanix

SMTP Email API · High-Deliverability

Key facts

  • Tovanix SMTP Email API hosts your own SMTP accounts and rotates sending across them; the domain health check reports SPF, DKIM and DMARC status.
  • Integration works in dual mode: the standard SMTP protocol or an HTTP API.
  • Email templates are stored with versioning and variable personalization, in both HTML and plain-text formats.
  • Opens, clicks, bounces and unsubscribes are tracked in real time and delivered through webhook callbacks.
  • Multiple SMTP accounts rotate automatically, with daily and monthly quotas and feature flags by plan tier.

Tovanix SMTP Email API complete feature set:

  • Free plan: 500 emails/day, 10K/month; a gentler price curve than SendGrid / Mailgun, the more you send the more you save
  • Dual-mode integration: standard SMTP protocol or HTTP API
  • Templates: versioned storage + variable personalization, HTML / plain-text dual format
  • Campaigns: contact-group targeting and scheduled sending
  • Contact groups: bulk operations, targeting by group
  • Real-time tracking of opens / clicks / bounces / unsubscribes with Webhook callbacks
  • Multi-account rotation across your own SMTP accounts; accounts that fail repeatedly are paused and restored after a successful probe
  • Domain health check (SPF / DKIM / DMARC) and delivery rehearsal before you send
  • Feature flags by plan tier + daily / monthly quotas; for OTP, notification, marketing and 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

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