Cllavio — Email Marketing & SMTP API for

Cllavio — Email Marketing & SMTP API for

Campaigns + SMTP API with deliverability guardrails, SPF/DKI

V
@vullnetsahiti2004
Published on Dec 19, 2025
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About Cllavio — Email Marketing & SMTP API for

Campaigns + SMTP API with deliverability guardrails, SPF/DKIM/DMARC checks, analytics, and a generous free plan.

Product Insights

Cllavio provides a web-based dashboard and API for managing email campaigns and SMTP delivery. It integrates technical authentication checks like SPF, DKIM, and DMARC with analytics to monitor performance and deliverability.

  • Supports both campaign management and SMTP API integration.
  • Built-in deliverability guardrails including SPF, DKIM, and DMARC verification.
  • Integrated analytics for tracking email reporting and performance.
  • Offers a free tier for initial access and testing.

Ideal for: Developers, marketers, and startups can utilize this platform to execute email campaigns while maintaining technical sender reputation through automated authentication checks.

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Comments (2)

fanaapi425
@fanaapi425

Great job on this.

V
@vullnetsahiti2004

Still early, but we’re pushing hard to build something genuinely useful and fair for users.

nhrdev
@nhrdev

that's a really underrated tool :O, and 15k email/month for free is a massive number

V
@vullnetsahiti2004

That’s exactly the idea — go mass first. We want Cllavio to be like Google in the early days: accessible to everyone. The free tier is there to let people grow for real, then upgrade only when it truly makes sense for them.