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With Sinosend, sending a file is not the end of the story. You can update, protect, organise, and audit every transfer long after it leaves your dashboard. Replace a document with a corrected version, revoke access for a single recipient, add a password you forgot to set, or roll back to an earlier draft — all without generating a new link or chasing your recipients for an old one.

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Live file replacement

When you replace a file behind an existing link, every recipient who opens the link from that moment on sees the new version. The URL does not change. Outstanding email notifications do not need to be resent.
1

Open the transfer

In your dashboard, go to Transfers and click the transfer you want to update.
2

Select Replace File

In the transfer detail panel, click the ⋯ menu next to the file you want to replace, then select Replace File.
3

Upload the new version

Drag and drop the replacement file or click Browse to select it. The new file must have the same format — for example, replace a PDF with a PDF.
4

Confirm

Click Replace. Sinosend saves the previous file as a version in the history and makes the new file live immediately.
Live replacement is ideal for iterative documents like contract drafts, spec sheets, or rate cards. You keep the same shared link throughout the negotiation cycle while always showing the current version.

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Version history and rollback

Every time you replace a file, Sinosend stores the previous version. You can view the full version history and roll back to any earlier version at any time. To access version history:
  1. Open the transfer and click the file name.
  2. Select Version History from the file options panel.
  3. The history list shows each version with a timestamp and the account that uploaded it.
  4. Click Restore next to any version to make it the live version instantly.
Restored versions become the new current version. The version you replaced remains in history — nothing is permanently deleted until you explicitly remove it or a retention rule triggers.

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Access revocation

You can remove a specific recipient’s access to a transfer without affecting any other recipient’s ability to view it.
1

Open the transfer

Navigate to the transfer in your dashboard and click Recipients.
2

Revoke access

Find the recipient you want to remove and click Revoke Access next to their name. Their link token is invalidated immediately.
The revoked recipient sees an access-denied message if they try to open the link. All other recipients and any public link (if one exists) continue to work normally.

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Password management

You can add, change, or remove a password on any transfer after it has been sent.
ActionHow to do it
Add a passwordTransfer → Settings → Password → enter password → Save
Change passwordTransfer → Settings → Password → overwrite existing → Save
Remove passwordTransfer → Settings → Password → clear field → Save
Recipients accessing the link for the first time after a password is added will be prompted immediately. Recipients who already have the link open in a browser session will be prompted on their next visit.
Changing or removing a password takes effect instantly. Make sure you communicate the new password to your recipients through a separate channel — Sinosend does not automatically email them when the password changes.

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Expiry controls

Adjust the expiry date of any transfer at any time from the transfer settings.
1

Open transfer settings

Click the transfer, then click Settings (or the ⋯ menu → Settings).
2

Update the expiry date

Use the calendar picker in the Expiry field to choose a new date. To remove the expiry entirely and keep the link open indefinitely, clear the field.
3

Save

Click Save. The change takes effect immediately.

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AI smart tagging

Sinosend analyses the content of uploaded files and automatically applies descriptive tags — for example, invoice, contract, certificate, technical drawing, bill of lading. These tags appear on the transfer card in your dashboard and power the search function. You can also add, edit, or remove tags manually:
  1. Open the transfer.
  2. Click the Tags field.
  3. Type a tag and press Enter, or remove an existing tag by clicking the × next to it.
Use consistent tags across your team to make company-wide filtering fast and reliable. Admins can define a canonical tag list under Settings → Administrative Tags — see Team Collaboration for details.

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Retention rules

Retention rules let you define automated deletion policies so your library stays clean without manual housekeeping. You can create rules based on:
  • Content type — for example, delete all files tagged draft after 30 days.
  • Project status — automatically remove files in archived workspaces after 90 days.
  • Age — delete any transfer older than 12 months that has not been accessed in the last 6 months.
To manage retention rules, go to Settings → Retention Rules and click New Rule. Rules run nightly and apply to all matching transfers created before the rule’s trigger threshold.
Retention deletions are permanent and cannot be undone. Review your rules carefully before activating them, and ensure any files subject to legal hold are excluded.

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Audit trails

Every action taken on a file — view, download, replacement, password change, access revocation, version restore — is recorded in the transfer’s audit trail. The trail includes:
  • The type of action
  • The exact timestamp
  • The account or IP that performed it (for recipient actions)
To view the audit trail, open a transfer and click Audit Trail in the detail panel. You can export the trail as a CSV for compliance reporting or legal review.

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Search and filter

Use the search bar at the top of the Transfers page to find any transfer instantly. Filter your results by:
FilterOptions
Date rangeFrom / To date picker
RecipientSearch by email address
TagSelect one or more tags from the dropdown
VersionTransfers with more than N versions
StatusPending, Viewed, Expired, Revoked
Combine multiple filters to narrow results precisely — for example, all transfers tagged contract sent to a specific supplier in the last quarter.