`communication` connectors¶

Chat, email, SMS, push, and marketing-automation integrations. After the 2026-06-19 SDK migration, the five highest-traffic connectors (slack, twilio, discord, telegram, sendgrid) all run on official Go SDKs rather than hand-rolled HTTP.

Connectors in this category¶

Connector	URI / type	Native SDK	One-line description
`adobe_marketo`	`connector://<name>/send`	REST	Adobe Marketo Engage (leads, campaigns).
`discord`	`connector://<name>/send`	✅ `bwmarrin/discordgo` v0.29	Channel messages, embeds, edits, deletes, guilds.
`email`	`connector://<name>/send`	stdlib `net/smtp`	Generic SMTP send.
`gmail`	`connector://<name>/send`	Google OAuth2 + Gmail v1 REST	Gmail send / threads / labels.
`intercom`	`connector://<name>/send`	REST	Intercom messaging + contacts.
`irc`	`connector://<name>/send`	TCP/TLS	IRC client (PRIVMSG / JOIN / PART).
`mail`	`connector://<name>/send`	stdlib SMTP/IMAP	Generic mail send + retrieve.
`mailchimp`	`connector://<name>/send`	REST	Mailchimp lists / campaigns.
`matrix`	`connector://<name>/send`	REST	Matrix federated chat.
`mattermost`	`connector://<name>/send`	REST	Mattermost team-chat.
`pagerduty`	`connector://<name>/send`	REST	Incident trigger / ack / resolve.
`sendgrid`	`connector://<name>/send`	✅ `sendgrid/sendgrid-go` v3.16	Transactional email + dynamic templates.
`signal_messenger`	`connector://<name>/send`	REST (signal-cli bridge)	Signal Messenger via local signal-cli.
`slack`	`connector://<name>/send`	✅ `slack-go/slack` v0.26	post / update / delete / list channels / users / reactions / file uploads.
`smpp`	`connector://<name>/send`	SMPP TCP	Carrier-grade SMS.
`telegram`	`connector://<name>/send`	✅ `go-telegram-bot-api/v5` v5.5	sendMessage / sendPhoto / edit / delete / getChat.
`twilio`	`connector://<name>/send`	✅ `twilio/twilio-go` v1.30	SMS, voice, WhatsApp, account info.
`twitter`	`connector://<name>/send`	REST	Twitter / X API v2.
`whatsapp`	`connector://<name>/send`	REST (Meta WABA)	WhatsApp Business template + media messages.
`xmpp`	`connector://<name>/send`	XMPP TCP	Federated chat (Jabber).
`zoom`	`connector://<name>/send`	REST	Zoom meeting + webinar API.

Deep notes — SDK-backed connectors¶

`slack://`¶

Source: pkg/connector/connectors/communication/slack.go · SDK: github.com/slack-go/slack v0.26.0

Ops (10): post-message, update-message, delete-message, list-channels, get-channel, list-users, get-user, add-reaction, upload-file, auth-test.

connectors:
  s:
    type: slack
    config:
      token:   ${SLACK_BOT_TOKEN}    # xoxb-... or xoxp-...
      channel: "#general"

`twilio://`¶

Source: pkg/connector/connectors/communication/twilio.go · SDK: github.com/twilio/twilio-go v1.30.9 (Twilio's own)

Ops (6): send-sms, send-whatsapp, fetch-message, list-messages, make-call, fetch-account.

connectors:
  tw:
    type: twilio
    config:
      account_sid: ${TWILIO_ACCOUNT_SID}
      auth_token:  ${TWILIO_AUTH_TOKEN}
      from:        "+15555550100"

`discord://`¶

Source: pkg/connector/connectors/communication/discord.go · SDK: github.com/bwmarrin/discordgo v0.29.0

Ops (8): send-message, send-embed, edit-message, delete-message, get-message, list-channels, list-guilds, get-me.

connectors:
  dc:
    type: discord
    config:
      bot_token:  ${DISCORD_BOT_TOKEN}
      channel_id: "1234567890123456789"

`telegram://`¶

Source: pkg/connector/connectors/communication/telegram.go · SDK: github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1

Ops (6): send-message, send-photo, edit-message, delete-message, get-me, get-chat.

connectors:
  tg:
    type: telegram
    config:
      token:   ${TELEGRAM_BOT_TOKEN}      # from @BotFather
      chat_id: -100123456789              # negative for groups/channels

`sendgrid://`¶

Source: pkg/connector/connectors/communication/sendgrid.go · SDK: github.com/sendgrid/sendgrid-go v3.16.1 (Twilio SendGrid's own)

Ops (2): send-email (text + html), send-template (dynamic templates with substitution data).

connectors:
  sg:
    type: sendgrid
    config:
      api_key:    ${SENDGRID_API_KEY}     # SG....
      from_email: noreply@helix.example
      from_name:  "Helix Notifications"

Runnable bundle¶

A complete, validatable bundle that exercises every SDK-backed connector lives at examples/esb/communication.yaml:

bin/helix validate examples/esb/communication.yaml
# Validation passed: 0 workflow(s), 5 connector(s), 0 starlang block(s)

communication connectors¶

Connectors in this category¶

Deep notes — SDK-backed connectors¶

slack://¶

twilio://¶

discord://¶

telegram://¶

sendgrid://¶