Communication Nodes

Communication nodes deliver messages, alerts, and reports to users and channels. Use them as the terminal step of automation pipelines or as alert gates in error-handling branches.

Node	Type	Output
Email Send	email_send	json
Slack Notify	slack_notify	json
Discord Notify	discord_notify	json
Telegram Notify	telegram_notify	json
Push Notification	push_notification	json
SMS Send	sms_send	json

---

Email Send

Type: email_send · Category: Communication

Send an email with mapped subject, body, recipients, and optional attachments.

Inputs

Name	Type	Required	Description
message	text	No	Body text from upstream.
payload	json	No	Structured data for template rendering.
attachments	file	No	File attachments.

Outputs

Name	Type	Shape
delivery	json	{ status: text, messageId: text, provider: text }

Required Config

Field	Type	Description
to	string	Recipient email or mapping (e.g. {{workspace.owner.email}}).
subject	template	Subject template.
body	template	Body template (markdown supported by most providers).

Optional Config

Field	Type	Default	Description
fromProfile	string	default	Sender profile configured in workspace settings.
attachments	json	—	Attachment mappings: [{ name, filePath }].
provider	select	resend	resend · smtp
retry	json	—	Retry policy: { attempts, backoffMs }.

Example

{
  "fromProfile": "founder-updates",
  "to": "{{workspace.owner.email}}",
  "subject": "LenserFight weekly AI digest - {{formatDate $.firedAt}}",
  "body": "{{$.summary}}",
  "attachments": [{ "name": "leaderboard.csv", "filePath": "$.leaderboardFile.url" }],
  "provider": "resend",
  "retry": { "attempts": 3, "backoffMs": 2000 }
}

Scenario: Send the weekly AI digest to founders.

Expected output: { "status": "sent", "messageId": "resend_abc123", "provider": "resend" }

Downstream: → logger with { "message": "$.messageId" }

Valid Connections

→ logger (delivery audit)

→ Any upstream node that produces text, json, or file.

Execution Notes

• Runs in worker / server environments.
• fromProfile must be configured in Workspace Settings → Email Profiles.
• Use {{secrets.keyName}} to reference API keys from secret storage.

Troubleshooting

• "Delivery failed" — check the provider configuration and fromProfile.
• "Missing attachment" — ensure filePath resolves to a valid URL; use Object Storage Upload first.
• "Template not rendering" — verify that {{variable}} paths exist in the upstream payload.

Related Nodes

File Writer · Object Storage Upload · Schedule Trigger · Logger

---

Slack Notify

Type: slack_notify · Category: Communication

Send a Slack message to a channel using the configured workspace Slack integration.

Required Config

Field	Type	Description
channel	string	Channel name (e.g. #arena-alerts) or user id.
text	template	Message template. Supports {{variable}} interpolation.

Optional Config

Field	Type	Default
provider	string	slack
retry	json	{ attempts: 3, backoffMs: 2000 }

Example

{
  "channel": "#arena-alerts",
  "text": "Battle {{$.battleId}} winner: {{$.winner}}",
  "provider": "slack"
}

Expected output: { "status": "sent", "ts": "1715850000.000100" }

Downstream: → logger

Related Nodes

Discord Notify · Email Send · Error Catch

---

Discord Notify

Type: discord_notify · Category: Communication

Send a Discord message through a webhook URL.

Required Config

Field	Type	Description
webhookUrl	string	Discord webhook URL or secret reference.
content	template	Message content.

Example

{
  "webhookUrl": "{{secrets.discordArenaWebhook}}",
  "content": "New battle result: {{$.winner}}"
}

Expected output: { "status": "sent", "messageId": "discord_123" }

---

Telegram Notify

Type: telegram_notify · Category: Communication

Send a Telegram chat message through the configured bot.

Required Config

Field	Type	Description
chatId	string	Chat id or secret reference.
text	template	Message text.

Example

{
  "chatId": "{{secrets.telegramOpsChat}}",
  "text": "Workflow failed: {{$.error.message}}"
}

---

Push Notification

Type: push_notification · Category: Communication

Send an in-app or device push notification to a workspace audience.

Required Config

Field	Type	Description
audience	string	Target audience (e.g. workspace_admins).
title	template	Notification title.

Optional Config

Field	Type	Description
body	template	Notification body.

Example

{
  "audience": "workspace_admins",
  "title": "Digest ready",
  "body": "{{$.summaryTitle}}"
}

Expected output: { "status": "queued", "notificationId": "push_123" }

---

SMS Send

Type: sms_send · Category: Communication

Send an SMS alert through the configured provider (default: Twilio).

Required Config

Field	Type	Description
to	string	Recipient phone number or mapping.
body	template	SMS body.

Example

{
  "to": "{{workspace.owner.phone}}",
  "body": "Critical workflow failed: {{$.workflowName}}"
}

Expected output: { "status": "sent", "messageId": "sms_123" }

---

See also: Node Catalog Index · Integration Nodes · Storage Nodes · Workflow Studio