Hyvor Post vs Supernova: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Hyvor Post and Supernova — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Hyvor Post
HYVOR (Hyvor, SARL)
Privacy-first, open-source newsletter platform built on Hyvor Relay for simple, tracker-free email publishing.
Key features
- Privacy-First Delivery: Sends newsletters without user tracking or behavioral analytics, focusing on subscriber privacy and minimal data collection.
- Built-on Hyvor Relay: Uses Hyvor Relay — an open-source SMTP-based email API — to send mail through your own infrastructure for better deliverability control and scalability.
- Rich Embeds and Link Previews: Generates link previews and rich embeds via custom parsers and oEmbed; can scrape meta tags for link cards to enrich newsletter content.
- Open-Source Architecture: Distributed under the AGPL-3.0 license with separate frontend, backend, embed, and archive components to inspect, modify, and self-host the platform.
- Developer-Friendly APIs: Provides a developer-focused stack and integration points (Hyvor Relay and internal libraries) for customizing delivery, templates, and automation workflows.
- Scalable Email Sending: Designed to integrate with infrastructure capable of sending high volumes of emails (Relay aims for millions/day) while remaining observable and manageable.
- Modular Codebase: Clear repository layout (backend, frontend, embed, archive) enabling contributors to run the app locally via the HYVOR development environment and Docker tooling.
- Privacy-Oriented Defaults: Default settings and design choices prioritize no-tracking and minimal telemetry to align with privacy-conscious publishers and organizations.
- Privacy-first newsletter delivery with no tracking
- Built on Hyvor Relay — an open-source email API that uses SMTP
- Open-source codebase licensed under AGPL-3.0
- Repository split into backend, frontend, embed, and archive components
- Supports rich embeds and link previews (embed tooling / custom parsers / oEmbed)
- Developer-focused dev workflow (./run post in hyvor/dev environment)
- Docker-friendly components (Dockerfile present in related repos)
- Designed to interoperate with a self-hosted email stack (Relay/SMTP)
Best for
- Privacy-Focused Newsletters: Independent writers or organizations sending subscriber newsletters without tracking open rates or collecting behavioral data.
- Self-Hosted Email Infrastructure: Teams that want to send newsletters using their own SMTP infrastructure and avoid third-party email providers like SendGrid or Mailgun.
- Developer Integrations and Automation: Engineering teams building automated newsletter pipelines or custom sending logic using Hyvor Relay and Post's APIs and libraries.
- Rich Content Newsletters: Publishers who want automatic link previews and rich embeds in email issues to improve engagement and presentation of linked content.
- Open-Source Deployment and Contribution: Organizations that require an AGPL-licensed codebase to audit, extend, or host internally and contribute fixes or features upstream.
- Migration from SaaS Email Providers: Businesses seeking to move away from hosted transactional/newsletter services to a self-managed stack for cost control or privacy reasons.
- Blog-to-Newsletter Workflows: Bloggers using Hyvor's ecosystem (blogs, editor, and post) to create seamless publishing workflows that convert posts into newsletter issues.
- Running privacy-compliant newsletters for communities or businesses
- Integrating a self-hosted email API (Hyvor Relay) to power newsletters
- Developers building or customizing newsletter systems using open-source code
- Deploying a newsletter platform in environments requiring data control and no tracking
- Testing email sending and handling with a self-hosted SMTP-backed API
Supernova
Supernova
An encrypted Iceberg data lake with a built-in engine and MCP endpoint, so Claude and Codex can query every tool your company uses.
Key features
- MCP Endpoint for Claude and Codex: Point any MCP-speaking assistant at mcp.supernova.ai/mcp and every synced table becomes queryable in natural language.
- Encrypted Iceberg Lake: Open Apache Iceberg tables in object storage with table-level encryption, so the data stays in a portable open format you control.
- Zero-Copy Connections: Any engine that speaks Iceberg can read the lake directly, avoiding a second copy of your warehouse.
- Time Travel: Every table retains version history, so you can query the state of your data as of any earlier point.
- Built-In Frontier Models: Ask a question or describe a dashboard in plain language and Supernova generates the models and visualisations without a data team.
- TypeSQL: Schema-aware SQL that autocompletes across joins and type-checks before execution, catching errors the way a typed language would.
- Single-Binary CLI: One command-line tool connects sources, runs queries, tails live table changes and registers the MCP endpoint with Claude Desktop, from a laptop or CI.
- Git-Backed Dashboards: Models and dashboards are readable and writable through Git, putting analytics artefacts under normal version control.
Best for
- Conversational Revenue Analysis: Ask Claude which customers churned last quarter and why, with the answer computed over live Stripe and HubSpot tables.
- Warehouse Cost Reduction: Replace a multi-vendor pipeline-plus-warehouse stack with one usage-billed platform, which the vendor illustrates as $5,640/mo dropping to $540/mo for a hardware company.
- Dashboards Without a Data Team: Describe the dashboard you want in a sentence and have the models and charts generated for you.
- AI-Native Data Access Layer: Give internal agents a governed, encrypted single endpoint for company data instead of per-tool API integrations.
- Auditing Historical State: Use table version history to reconstruct what the numbers looked like before a pricing or schema change.
- CI-Driven Data Workflows: Drive connections, queries and change tailing from pipelines using the single CLI binary.