How can I send a large file and control how long the link works?

First, check that the service can handle your file and offers the controls you need. This guide focuses on Dropbox because the supplied help information documents its link-sharing settings; it does not establish file-size limits or compare other services.

Before sending, decide who should be able to open the link and how long you want it available. Dropbox documents link permissions, and eligible plans can set an expiration date or password. Availability depends on the account plan and settings. [S1] Check the options shown in your own account rather than assuming every account has the same controls.

Not necessarily. Dropbox distinguishes people accessing through the shared link from people who were granted direct access: link settings apply to link users, while people with direct access retain their permissions. [S1]

That distinction matters if you have shared the file with named people as well as sending a link. Before relying on an expiration date, review both routes: who can use the link, and who has direct access. If you want to end a particular person’s access, check the direct-access settings separately. The source explains the distinction but does not specify every account’s controls or the steps for changing them.

Choose link permissions appropriate for the intended recipient, then test the link in a way that reflects their situation. Dropbox notes that some sharing setups may require recipients to request access or receive approval. [S1] A link that opens for you may therefore not be enough to confirm the recipient can open it.

For example, suppose you want one colleague to review a file until Friday. Check whether your account offers an expiration date and appropriate link permissions; if it does, set the intended end date. Then test the recipient’s route, and tell them they may need approval if the sharing setup prompts for it. This example assumes those settings are available; it is not a claim that every Dropbox account has them.

Copy and adapt this, replacing the bracketed details:

“Here is the file: [shared link]. It is intended for [recipient or audience] and should be available until [date, if an expiration is set]. Please let me know if you’re prompted to request access. I’ll check the sharing settings if access doesn’t work.”

Before sending, confirm the file is the intended one, the link permission matches its audience, and the expiration control is available and set if you need one. Review direct access separately because link settings do not remove permissions already granted directly. [S1] After sending, ask the recipient to confirm they can open it. The source does not establish a particular file-size limit, whether a given plan includes these options, or how long an approval request will take; verify availability in your account.