## Invitation Overview

An invitation sends an email inviting someone to join your Organization. When you set up an invitation, you can:

- Assign the required permission policies to control what the invitee can do when they accept the invite and join your Organization.
- Set a date for when the invitation will expire.
- Set a date for when the invited user’s access will expire.

When the invitee receives the invitation email:

- If the invitee is already a m3ter user and has a m3ter account, they can click a link and use their credentials to log into your Organization.
- If the invitee is not a m3ter user and does not have a m3ter account, they’ll be invited to create a m3ter account before logging into your Organization.

See [Inviting Users to your Organization](https://docs.m3ter.com/guides/organization-and-access-management/managing-users#inviting-users-to-your-organization) in our user documentation for more details.