# Teams

A team is a group of people with at least one leader. It is how people get mail in
Theorem: a team's leader adds the team's own domain, and gives each member an address on
it, with a mailbox, a calendar and contacts. A team can also have roles and its own apps.

Open **Teams** from the menu under your name. Your teams are listed at the left, then any
team that invited you, marked **Invited**.

## What is whose

- **Your account is yours.** You sign in with your own email. No team makes your account,
  takes it over or sees into it. Your chats and your drive stay yours whatever teams you
  join or leave.
- **What a team gives is the team's:** the address and its mailbox, calendar and contacts.
  If you leave or are removed, you lose them, and the team keeps them.

You may be in up to 20 teams.

## Leaders and members

| A leader can | A member can |
|---|---|
| rename the team, turn its Mail and Calendar on and off | see the team's name, its members and roles |
| invite people, remove members, make a member a leader | leave the team |
| make roles and say who holds them | see their own address in the team |
| add domains, give addresses, add the team's apps | |

A team always has a leader: the last one cannot leave, be removed or be made a member.
A member's sign-in email is shown to the team's leaders only. Other members see names.

## Starting a team

Press **New team**, give it a name and press **Create**. You are its first leader. You need
a name on your account first.

- A team's name is 1 to 60 characters: letters, digits, spaces and the marks - ' & , . ( ).
  It cannot look like a web address or a phone number.
- "Theorem", and names that read like it, are kept for Theorem's own team.
- One account may start 3 teams. A team holds 50 people, counting invitations that still
  wait.

## Setting a team up

1. On the **General** tab, under **Apps**, turn on **Mail**, and **Calendar** if you want
   it. A new team has both off. Calendar can be on only while Mail is.
2. On the **Mail** tab, add your domain and its records
   ([Domains and addresses](/teams/mail)).
3. On the **Members** tab, invite people ([Members and invitations](/teams/members)).
4. Back on the **Mail** tab, give each person an address.
5. If you need them, make roles ([Roles](/teams/roles)) and add your apps
   ([Your team's connections](/teams/connections)).

Turning Mail off deletes nothing, and mail keeps arriving, but nobody can open the team's
mail until it is on again. Turning Mail off turns Calendar off with it.

## Leaving and deleting

On **General**, **Leave team** takes you out, with the address the team gave you. A leader
who is the team's only member can **Delete team**. Its roles and invitations go for good.
If it gave addresses, they stop working within about a minute, and their mail, calendars
and contacts are destroyed after 30 days. Theorem asks first, and you type the team's name
to confirm.