Invite non trello users to a team

[Pelle Chamliden]

I wonder if you can invite users to a team board that are not yet a trello users yet?

[Iain Dooley]

@Pelle Chamliden You can invite anyone to join a board by email address. If they don't yet have a Trello account, they will be added as a "virtual" user. They'll get an invitation email that has a "join board" button in it. When they click that, they will be prompted to create an account. They won't be able to interact with the board until they create the account.

If you're a business class customer, you can add users as observers to your boards. They will still need to sign up for a Trello account:

https://help.trello.com/article/732-adding-observers-to-boards

[Katrin Anger]

@Pelle Chamliden 

"Invited" users need to have a username. And a username is connected to a Trello account. 

If you want them to do things (like adding or removing comments, labels, due dates) in a Trello board, you need to invite them.

If you only want them to be able to read, it would be enough to make a board "public".