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SendDock

One install. Every client, isolated.·senddock.dev

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$9–$149/mo · Free plan · Open source See pricing ↓

SendDock is a multi-tenant email marketing platform where every project gets its own SMTP relay, sending domain, subscriber list and analytics, so agencies or platforms can run many clients or brands from one install without their sending reputations bleeding into each other. It ships a REST API, a drag-and-drop template builder, and bring-your-own-SMTP support, and can be run self-hosted under AGPL-3.0 or used as a managed cloud service. Pricing is charged per install rather than per contact or per send.

What it's for

Running isolated email marketing for multiple clients or brands from one installSending newsletters, campaigns and broadcasts via API or dashboardScoping API keys and analytics per client/projectTracking opens, clicks and deliverability per projectSegmenting audiences with typed custom fields and tagsManaging per-newsletter subscriptions and branded unsubscribe pages

Features 15

  • Analytics dashboard: Overview, Campaigns, Audience, Engagement tabs with date-range picker and click heatmap
  • Branded, white-label unsubscribe pages
  • Bring your own SMTP (Mailgun, SES, Postmark, or any SMTP-speaking service)
  • Cookie auth for dashboard, API-key auth for everything else
  • Deliverability & Reports (Pro): domain health (SPF/DKIM/DMARC), per-provider accept/bounce/open/spam rates, dynamic report builder with CSV export
  • Drag-and-drop email builder
  • Isolated per-project SMTP relay and sending domain
  • Multiple newsletters per project with per-newsletter unsubscribe
  • Per-project subscriber suppression (bounces/spam complaints don't leak sideways)
  • Pixel-based open tracking and HMAC-signed click redirect tracking, on by default
  • Project-scoped API keys and analytics
  • REST API covering every dashboard feature
  • Single-binary self-hosted deployment (~57 MB RAM) via Docker
  • Typed custom fields, free-form tags and saved segment filters
  • Webhooks with 7 event types, HMAC-SHA256 signing and exponential-backoff retries

At a glance

free tieropen sourceself-hostableAPI
TypeWeb app
DeploymentHybrid
PlatformsWeb, Linux, macOS, Windows
Foragencies, developers
CompanyArkhe Systems

Integrations

PostmarkSESMailgun

Resources

Pricing

Priced per install, not per contact — no per-contact or per-send fees on any plan. Self-hosted tiers (Pro, Team, Enterprise) are flat monthly license fees; deliverability reporting, the report builder and the audit log are described as Pro-tier features. Cloud tiers are differentiated by subscriber count caps.

Community (self-hosted)Free

Free, self-hosted, AGPL-3.0 licensed.

Unlimited projects and contacts, self-hosted, bring your own SMTP

Pro (self-hosted)$9/mo

Priced per install, not per contact.

Team (self-hosted)$29/mo

Priced per install, not per contact.

Enterprise (self-hosted)$149/mo

Priced per install, not per contact.

Cloud FreeFree

Up to 2,000 subscribers, fully managed.

Cloud Starter$19/mo

Up to 10,000 subscribers.

Cloud Growth$49/mo

Up to 50,000 subscribers.

Cloud Scale$129/mo

Up to 250,000 subscribers.

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Last checked 1 month ago·