Email connector

The Email connector (action.email) sends messages through SMTP configured on your Dolibarr instance. Included in Knot Core (GPL) — no Pro Pack licence required. Ideal for payment reminders, team notifications, or customer follow-ups after an ERP action.

Free in Core — configure SMTP in Dolibarr, then add this connector to your canvas. For Gmail API or multi-channel alerts (Slack + email + webhook), see Knot Pro Pack.

🔌 SMTP prerequisites

Before using this connector:

Configure SMTP in Dolibarr (host, port, encryption).
Send a test email from Dolibarr (administration menu).
Confirm the default sender is allowed by your mail provider.

Without valid SMTP, the run fails with a clear error in run history.

🔌 Node fields

Field	Description
To	Recipient(s), comma-separated; `{{ }}` allowed
Subject	Message subject
Body	HTML body; expressions supported

Attachments are not supported by action.email today.

🔌 Templates and personalization

Build the body with expressions:

Hello {{ nodes.tier.output.name }},

Your invoice {{ nodes.invoice.output.ref }} is available.

For recurring layouts, centralize a fragment in a Logic node or reuse a workflow template from examples/*.knot.json.

🔌 Live demo

On demo.example.com (public Knot demo), real sending is often disabled to prevent spam. You can still:

configure the node;
validate the graph in Simulate;
read the “would have been sent” payload in the inspection panel.

On your own Dolibarr, sending uses your real SMTP configuration.

🔌 Best practices

Do not email secrets (use short signed links if needed).
Respect GDPR: lawful basis and opt-out for marketing use.
Limit frequency: prefer a spaced Cron trigger over sending on every micro-event.

Configure an AI provider — another notification channel
Track runs — diagnose a failed send