Automated upload & send a large file with TransferNow

This workflow creates a user-friendly web form to upload a file, which allows users to upload a single large file (up to 5Gb) through a custom web form and automatically send it via TransferNow, handling the complex multi-part upload process required for large files.

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Advantages

✅ No manual steps: The entire process from file upload to email delivery is fully automated. ✅User-friendly: Anyone can upload files via a simple web form, without needing to access TransferNow directly. ✅Supports large files: TransferNow’s API handles large files that are not suitable for email attachments. ✅ Secure file delivery: The workflow uses TransferNow’s secure, expiring download links. ✅Customizable: You can easily adjust the workflow to support multiple file types, multiple recipients, or different validity rules. ✅Scalable: Works for individuals, teams, or businesses that frequently need to share large documents.

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How It Works

The workflow is triggered when a user submits the embedded web form. Here is the process:

1. Form Trigger: A user accesses the form, fills in the required details (Title, Message, Recipient Email), and uploads a single PDF file. Submitting the form starts the workflow. 2. File Processing: The workflow calculates the size of the uploaded file, which is a necessary parameter for the TransferNow API. 3. Transfer Creation: It sends a request to the TransferNow API to create a new file transfer. The API responds with details needed for the upload, including a unique transferId and uploadId. 4. Upload URL Retrieval: The workflow requests a pre-signed upload URL from TransferNow for the specific part of the file. 5. File Upload: The binary file data from the form and the upload URL from the previous step are merged. The workflow then performs a direct PUT request to the secured TransferNow URL to upload the file's binary content. 6. Upload Confirmation: After the upload, the workflow informs the TransferNow API that the file part upload is complete. 7. Finalization: Once the entire upload is confirmed, the workflow finalizes the transfer on TransferNow's side. 8. Data Retrieval & Response: The workflow fetches the final transfer data, constructs a public download URL, and sends a success message back to the user's browser, displaying the recipient's email and the download link.