Notifications on Multiple boards

[Julie Borders]

If I have multiple boards, can I still @Tag someone that is on another board within my company? I would like to have some of my people only on one board to reduce cost of billable users.

[Blair at Atlassian · Accepted solution]

If you mention a user who is not a member of the board, they will not receive a notification or gain access of any kind to your board. 

Once a member has been removed from all but one board, they will change from a billable Multi-Board Guest to a free Single-Board Guest. You can remove a Multi-Board Guest like a team member on the team’s member page, under the “Guests” section.

On the team’s Members page at https://trello.com/[your-team-name-here]/members —you can also navigate to your own profile and click on your team’s name there—you can click on “Guests” to view all members that currently classify as Multi-Board Guests, with a description of how many boards they’re on. You can click on that link to remove them from all but one to convert them to a Single Board Guest.

[Iain Dooley]

@Julie Borders @Blair at Atlassian I just wanted to make a clarifying point in addition to Blair's response: the billing in Trello is done by Team in a Business Class account, so even if you have a team member who is not a member of any boards, they're still billable.

You can have as many non-team members as you like as members of your boards, and you won't pay for them.