Warmbly

Warmbly is an open-source platform for B2B cold outreach and email warmup: multi-step campaigns across many mailboxes, a unified inbox for every reply, a CRM, and the deliverability tooling that keeps those mailboxes out of spam.

Features

• Campaigns: multi-step sequences with per-mailbox caps and spacing.
• Unified inbox: every connected mailbox and reply in one place.
• CRM: contacts, pipelines, deals, tasks and meetings.
• Warmup: a monitored pool of real mailboxes.
• Deliverability: bounces, complaints, suppression lists and open/click tracking on your own tracking domain.
• Hosted forms: lead-capture pages and embeds.
• Automations: visual reply playbooks, with optional AI steps using your own provider key.
• Integrations: HubSpot, Pipedrive, Slack, Zapier, REST API and webhooks.
• Realtime: live presence and updates across the team.

Cloudron integration

• Single sign-on: Cloudron users can sign in with their Cloudron account.
• Outgoing mail: sign-in codes, password resets and invitations go through the Cloudron mail relay.
• Own domains: the dashboard, API, admin panel, tracking and forms each get a domain with a Cloudron certificate. Add customers' tracking domains as aliases of the app.
• Backups: the PostgreSQL database, stored files and the encryption keys are in Cloudron backups.

The whole self-host stack (API, event consumer, mailbox worker, tracking, forms, realtime gateway and NATS) runs in one container on Cloudron's PostgreSQL and Redis. No cloud account is needed.

Warmbly is open source under the Apache-2.0 licence. This package is maintained independently of the Warmbly project.