SendDock is unclaimed —

SendDock

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

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

MailgunSESPostmark

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.