Share with people who don't have a Drime account

No. A share link opens for anyone who has it, and an email share to someone without an account sends them a personal link. Neither asks them to sign up.

A share link is one address for everyone: whoever has it can open the item. Depending on your plan, it can be protected with a password or an expiration date.

An email share gives each person their own personal link with the access level you chose (Can view, Can Download or Can edit), and you see each person in Who has access.

Share the item as usual and enter their email address. Drime asks Share with unregistered users? and explains that they will get an invitation to access the item without registering. Click Share to confirm.

They receive an email titled Files shared on Drime with their personal link. The email tells them that this link gives access without signing in.

The same limits apply as for any email share: see the sharing limits. In a workspace, Drime also warns you that the address is not on your team.

In the Share dialog, Who has access lists them with the mention Shared via email (not registered). Only you, the owner, see this mention.

Open Share on the item and remove the person from Who has access. Their personal link is revoked. For a share link, delete the link instead: see Change or remove access and stop sharing.

Yes. Share it with a link or by email. Drime has no download quota and no bandwidth limit, so the size of the folder does not prevent them from downloading it.