Quickly

What Quickly is

Quickly is a free, open-source platform for self-hosted cold email outreach. It lets teams build multi-step sequences with unlimited follow-up steps, set wait periods between messages, and thread replies automatically. Sending can rotate across Gmail and Microsoft 365 inboxes while honoring each inbox’s daily limits. Quickly also connects to Outlook and SMTP relays such as Amazon SES and Brevo, with optional IMAP reply sync. AI reply classification works with 19 providers, including Ollama for local offline use. Campaign analytics show performance by sequence step, along with open, click, and reply rates and timeline charts. For automation, Quickly includes a REST API with more than 90 endpoints, 15 webhook event types, an MCP server, and a custom n8n node. The project’s listed security stack includes JWT HS256, bcrypt, HMAC API keys, and Fernet token encryption. Deployment paths include Railway and other PaaS options, VPS using Docker Compose, existing servers with nginx, and local development. The first deployment allows creation of an initial admin account; that admin can invite more users from Settings after registration closes. The MIT license allows free use, modification, and self-hosting; hosting costs are paid by the operator.

Who it suits

Quickly suits sales teams, agencies, and independent hackers who want to run cold outreach on infrastructure they host themselves. It is also suited to teams that need inbox rotation, sequence analytics, or API and webhook automation.

Limits

The Self-hosted plan costs nothing, with unlimited team members and contacts; the operator pays for the hosting server. Personalization features are basic.

Getting started

1. Open the Quickly GitHub website.
2. Choose a documented deployment path: Railway or another PaaS, VPS with Docker Compose, an existing server with nginx, or local development.
3. Deploy Quickly; the first deployment allows creation of an initial admin account.
4. Invite additional users from Settings after registration closes.
5. Connect Gmail, Microsoft 365/Outlook, or an SMTP relay such as Amazon SES or Brevo.
6. Configure sequences, inbox rotation, reply sync, and classification as needed.

Verdict

Choose Quickly if you want a free, MIT-licensed cold email platform that you can self-host and connect to Gmail, Microsoft 365, or SMTP relays. Its sequences, inbox rotation, reply classification, and automation interfaces suit teams building their own outreach setup. Look elsewhere if you need more than basic personalization or prefer not to manage hosting.