Built in

Resend

The Resend API with an API key, to send email from pipelines and ontology actions.

Inside SegmentStream

Connected once, used everywhere.

Connections are declared in your repository and authorised in the console. The credentials stay with the platform; apps, pipelines, workflows and the agent use them under the same roles.

The console's connections page: Resend, Xero, Stripe, Supabase, LinkedIn and Telegram connections, each connected, with the key it is declared under in code — Connections declared in code and authorised here. The credentials stay with the platform, never in the repository.

What the connection reaches

Send email
Read emails, domains and contacts with a full-access key
Callable from pipelines and from ontology actions

Status: Built into the pipeline SDK
Connection class: ResendConnection
Credential: API key
In use: In use at SegmentStream HQ, our own workspace.

Connect Resend

Three steps, the same for every connection. The credential goes to the platform, never into the repository or pipeline code.

Declare it in connections/connections.py

connections/connections.py

from segmentstream.connections import ResendConnection connections = (    ResendConnection(key="resend"),)

2
Deploy
```
$ segmentstream deploy
```
3
Connect
Paste the API key (Resend > API Keys; it starts with re_) into the connection in the console, or configure it from the terminal with a hidden prompt. API-key connections need no authorisation step: once the value is set, the connection is connected.
```
$ segmentstream connection configure resend
```

Use it

Code asks for the connection by its key. The platform adds the credential on the way out.

pipeline/ingestion/…

import segmentstream as s with s.get_connection("resend").get_http_client() as client:    response = client.post("/emails", json=message)    response.raise_for_status()

Or ask your agent

“Email the account owner when a deal is won.”

Part of these solutions

Newsletters

Campaigns to audiences built from your contacts

Marketing

Audiences, campaigns and reporting

Sales and CRM

Leads, deals and clients, shaped to how you sell

More in Messaging & email

TelegramBuilt inA bot for your team's chats, and one of the company agent's channels.GmailBuilt inRead, search and send from one mailbox, such as support@.WhatsApp BusinessBuilt inWhatsApp Cloud API access with your own Meta app and system-user token.BrazeVia APIUsers, segments, campaign and Canvas data through Braze's export endpoints.

All integrations →

Enterprise pilot

Want Resend set up for you?

Our forward-deployed engineers build one solution on your data, in your own workspace, as code you own. Tell us what you run today and what you want; your note goes straight to our founder.

One solution, on your data, in your own workspace
First version live in two weeks
Parity proven before anything is switched off
Fixed scope and price, credited to your contract if you continue

Not ready for a pilot? Send the form anyway with your question. An engineer will reply, not a sales rep.

How the pilot works

NameWork email

CompanyWhat should the pilot cover?

Anything we should knowHow did you hear about us?

Goes to our founder’s inbox. No sales queue, no newsletter.

Connect what your company runs.

Start a pilot

Our engineers build the first version on your data in two weeks, at a fixed price.

Or build it yourself with your coding agent:

curl -fsSL https://segmentstream.com/install.sh | sh