---
title: "One address book"
description: "Everyone works from the same contacts, and your code and agents read the same rows."
url: "https://openemail.uk/features/shared-contacts"
---

Inboxes a team works

# One address book for the whole team

Everyone works from the same contacts, and your code and agents read the same rows.

[Open mail](https://openemail.uk/mail/inbox) [Get Started](https://openemail.uk/signup.md)[Every walkthrough](https://openemail.uk/features/in-practice.md)

Contacts

Shared address book App

DW Dana Whitfield dana@northwind.co 4 threads

OB Omar Baptiste omar@lumen.io 7 threads

MS Mia Sandoval mia@pinefield.dev 2 threads

Lists Everyone Investors Suppliers

How it works

## Running in three steps.

1. 01
   
   Save a contact
   
   From a message, from Contacts, or from your own code.
2. 02
   
   Group them
   
   Put contacts into named lists beside the built-in one holding everybody.
3. 03
   
   Open their mail
   
   A contact page lists every thread with that person.

What it runs on

## The parts doing the work.

Nothing here is a separate product. Each one is a piece of the mailbox you already have.

Recipient suggestions

The people you already write to, offered as you type.

SR

AK

NM

JD

PL

+1,240

sarahreyes@acme.com

REST API

A documented HTTP API with issuable, scopable, revocable keys.

/threads?query=invoice

{ "threads": 12 }

Same mailbox, whether a person or a program is holding it.

Typed SDKs

A TypeScript client first, then the rest.

/threads?query=invoice

{ "threads": 12 }

Same mailbox, whether a person or a program is holding it.

MCP server

Point Claude, or any MCP client, at your mailbox.

/threads?query=invoice

{ "threads": 12 }

Same mailbox, whether a person or a program is holding it.

Thread notes

Keep a private note attached to a thread.

18 messages → 1 summary

Three people agreed the launch slips to the 14th. Ali owns the changelog; Sarah needs copy by Friday.

Nearby

## Other jobs for the same inbox.

Send a newsletter

Design the email once, send it from your own code, and see what was opened.

Hi {{firstName}} Omar

Read the update

dana@northwind.co Clicked

omar@lumen.io Sent

130 Sent 42 Opened 9 Clicked

An inbox for agents

Point an assistant at a mailbox and let it read, draft and send.

agent@yourco.com Member

listThreads getThread searchMail sendEmail

Work a sales inbox

Send from a template, see who opened it, and book the call in the thread.

RK Rena Kaur 2

Intro call this week?

Sent

Opened

Clicked

Booked

[Every walkthrough](https://openemail.uk/features/in-practice.md)