Team collaboration starts with getting everyone into Ninety. While inviting teammates is typically straightforward, invitation delivery or acceptance issues can occasionally occur. This guide walks you through the most effective solutions to ensure your team members can successfully join your account. For the standard process, see Adding and Inviting Users to Your Account.

Before troubleshooting, confirm your role allows you to invite — and what roles you can assign. Invitation permissions in Ninety depend on your role:

Only an Owner can invite a Coach — see Inviting Your Coach. If you're trying to assign a role above your permission level, ask your workspace Owner or Admin to send the invitation instead. To check your own role, go to Directory and find your name in the Role Access column.

Permission is only half of it — you also need an available license. Every paid role (Owner, Admin, Manager, or Team Member) consumes one license. Owners and Admins can add a license as they invite, so their invitations always go through. Managers cannot add licenses, so a Manager's invitation only succeeds when your account already has one available. If none are left, ask an Owner or Admin to add one from Billing > Manage licenses, then send the invitation. See Adding, Removing, and Reassigning Licenses.

If a teammate reports they haven't received their invitation email, start here.

Resend the invitation from the Directory:

Alternative: Click Copy unique invite link from the same menu to create a direct link you can share with the user via text, email, or any other method.

Send a fresh invitation: If resending doesn't work, click Add Teammates from the left navigation, enter the user's email address and role, and click Add teammates to send a new invitation.

This error appears when you click Invite or Add teammates and the invitation can't be created. It usually means the email address is still attached to a user record in your account — either an incomplete invite from an earlier attempt, or a user who was previously deleted.

Start here: clear the incomplete record.

If the error comes back immediately, send a direct invite link instead. In the Directory, click the ellipsis next to their name and select Copy unique invite link, then send that link to them directly. This bypasses the invitation email entirely and resolves many cases.

If neither works, the address is still bound to a deleted user. When an email address was used by someone you removed from the account, the old association can remain in place, and deleting and re-adding won't clear it. This one can't be fixed from the Directory — contact support with the email address you're trying to invite, and they can release it.

This error typically occurs when a previous invitation attempt created a partial user record. To resolve it:

If the invitation still doesn't arrive. If your teammate has checked their spam folder, added Ninety to their safe sender list, and the invitation still isn't arriving — even after resending or sharing the unique invite link — their email address may be on Ninety's suppression list. This happens when their email provider previously bounced or rejected a message from Ninety, which blocks all future emails to that address automatically. Standard troubleshooting won't resolve it — contact support and they can remove the address from the suppression list.