When you’re invited to a shared Dropbox file or folder, you’ll receive a notification on dropbox.com, in the Dropbox apps, and over email.
If you’re invited to a shared folder, you can add this folder to your Dropbox account. When you add a shared folder to your account, you have access to that folder and its contents. The shared folder also syncs with other members’ Dropbox accounts. The person who shared the folder with you may have given you either editor or viewer permissions.
Click Add to Dropbox under the shared folder you want to access.
You need a Dropbox account and a verified email address to accept a shared folder invite. Shared folders are added directly to your Dropbox account and sync with all folder members. If you don't have a Dropbox account yet, you can create one and then accept the invite.
Request access to a shared folder
If you click a shared folder invite and you're directed to request access, the folder owner may not yet have given you access. For example, someone who received a shared folder invite may have forwarded that invite on to you. You can request access to the folder:
Click the invitation link that you received.
Click Request access.
If you have more than one Dropbox account, select which account you'd like to add the shared folder to.
Your request will be sent to the folder owner, and you'll be notified if the owner accepts your request.
If you're on a Dropbox Business team and you share a folder with someone else on your team, the shared folder only uses the team's aggregate storage quota. However, if you share a folder with someone not included in your team, the folder uses both your team's space and space on the account of the person you shared with.