Knak is the enterprise-grade, no-code solution that transforms how marketing teams build emails and landing pages — without relying on developers or agencies.
With a robust modular design system, real-time collaboration, and native integrations with platforms like Marketo, SFMC, and Eloqua, Knak eliminates production bottlenecks while preserving brand governance. Empower your team to deliver high-performance assets quickly, securely, and at scale — no code required. Trusted by global brands to streamline campaign execution and accelerate time-to-market.
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InboxAlly is email deliverability software that moves your messages out of spam and promotions and into the primary inbox. It builds and protects sender reputation, warms new domains and IPs automatically, verifies inbox placement across the major mailbox providers, and monitors blacklists in real time. It layers onto any ESP or SMTP setup without changing how you send. Every plan carries a REST API, a dedicated customer success manager and 24/7 live support. Used by marketers, agencies, cold outreach teams and deliverability consultants.
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Coldletter
Coldletter is an email design and automation layer that helps teams create, manage, and send product emails without replacing their existing email provider. It connects with delivery services such as SendGrid, Postmark, Amazon SES, Mailgun, Resend, and SparkPost, giving companies flexibility while keeping sending infrastructure intact. The platform includes a visual editor where teams can build templates, add variables, reuse blocks, and preview emails across clients such as Gmail, Outlook, and Apple Mail. Every template is designed to be responsive, accessible, and safe for dark mode by default. Developers can trigger templates through a single API request while Coldletter handles rendering, data merging, routing, retries, suppression, and idempotency. Marketing, lifecycle, design, and product teams can use the platform to manage email content without constantly relying on engineering for every change. Journey automation tools allow users to create workflows based on events, schedules, engagement, attributes, or A/B testing paths. Version control, template diffs, rollbacks, localization, test sends, roles, approvals, and analytics help teams manage production emails with more confidence. Coldletter gives organizations a structured way to build polished product emails while improving collaboration between technical and non-technical teams.
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Mailrith
Mailrith is an email marketing and automation platform built for startups, creators, newsletter operators, small businesses, agencies, and growing teams.
Users can collect Subscribers through hosted forms, embedded forms, and landing pages, then organize them using tags, custom fields, and dynamic segments. They can send one-time Broadcasts, create automated Sequences, build visual Automations, manage reusable email templates, and use Magic Links to trigger actions when Subscribers click links.
Mailrith also supports bring-your-own SMTP through Amazon SES, Postmark, SendGrid, Mailgun, Resend, Brevo, or a custom SMTP server. This gives users greater control over their email infrastructure and sending costs.
For teams and developers, Mailrith includes shared workspaces, user permissions, API access, webhooks, OAuth support, and TypeScript and Python SDKs. This makes it suitable for both everyday email marketing and more advanced, connected business workflows.
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