🛡 Send2Pro User Guide

Secure File Transfer for Professionals

Version 1.0 — April 2026

🏠 Overview

Send2Pro is a secure, self-hosted file transfer platform designed for professionals who need to exchange files with clients safely. Files are transferred over HTTPS and can be scanned for malware using MetaDefender Cloud's 30+ antivirus engines.

Key capabilities available to you as a user:

FeatureDescription
Secure UploadUpload files over an encrypted HTTPS connection directly to your account.
Virus ScanningScan any file with MetaDefender Cloud — powered by 30+ antivirus engines.
Share LinksGenerate a one-click upload link so others can send files to your account without needing to log in.
Email Share LinksDeliver an upload link straight to one or more recipients' inboxes, with an optional custom message, all from within Send2Pro.
Auto-ExpirationFiles are automatically deleted after 30 days to keep your account tidy and secure.
Download & ManageDownload, view scan results, or delete files at any time from the My Files page.

🔒 Signing In

When you visit your Send2Pro instance, you'll see the sign-in screen. Enter the credentials provided to you by your administrator or professional contact.

1
Open Send2Pro

Navigate to your Send2Pro URL in any modern web browser (Chrome, Firefox, Safari, or Edge). The URL will look something like https://yourcompany.send2pro.com.

2
Enter your credentials

Type your Username and Password in the sign-in form.

3
Click "Sign In"

You'll be taken to the My Files page where you can see all your uploaded files.

Send2Pro Sign-In Form
💡
First time visiting? Your browser may show a certificate warning if your instance uses a self-signed SSL certificate. Click AdvancedProceed to continue safely. This is normal for self-hosted setups.

📝 Creating an Account

If your administrator has enabled self-registration, you can create your own account directly from the login page.

1
Click the "Register" tab

On the sign-in screen, switch from the Sign In tab to the Register tab.

2
Fill in your details

Choose a Username (at least 3 characters) and a Password. Confirm your password in the second field.

3
Click "Create Account"

Your account is created immediately as a Member. You'll be signed in and taken to the My Files page.

Send2Pro Registration Form

📄 My Files

The My Files page is your home base. It shows all files currently stored in your account with the following information for each file:

ColumnWhat It Shows
NameThe original file name as it was when uploaded.
SizeThe original file size before encryption.
UploadedThe date and time the file was uploaded to your account.
ExpiresThe date the file will be automatically deleted (default: 30 days after upload).
Scan StatusShows whether the file has been scanned and the result: Clean, Infected, Pending, or Not Scanned.
Last ScannedWhen the most recent virus scan was performed.
ActionsButtons to download, scan, or delete the file.
Send2Pro My Files Page
💡
Empty account? If you haven't uploaded any files yet, you'll see a welcome message with buttons to Upload File or Generate Upload Link.

📤 Uploading Files

You can upload files to your Send2Pro account from the Upload page in the sidebar.

1
Click "Upload" in the sidebar

Navigate to the Upload page from the left-hand sidebar menu.

2
Select your file

Click the upload area to browse your computer, or drag and drop a file directly onto the upload zone. Any file type is supported.

3
Wait for upload to complete

A progress bar will appear showing the upload status. Once complete, the file will appear in your My Files list.

Send2Pro Upload Page
Files are transferred over HTTPS (encrypted connection). They are stored securely on the server and automatically deleted after 30 days.

📥 Downloading Files

To download a file from your account:

1
Go to My Files

Click My Files in the sidebar to see your file list.

2
Click the download button

In the Actions column for the file you want, click the Download button. The file will be saved to your browser's default download location.

Send2Pro Download Button

🗑 Deleting Files

You can manually delete any file from your account at any time. Deleted files are removed permanently and cannot be recovered.

1
Find the file in My Files

Locate the file you want to remove in your files list.

2
Click the delete button

Click the red Delete button in the Actions column. The file will be removed immediately.

⚠️
This action is permanent. Once deleted, a file cannot be recovered. Make sure you have a local copy before deleting.

File Expiration

Every file uploaded to Send2Pro has an automatic expiration date, set to 30 days after upload by default. When a file expires, it is permanently deleted from the server.

You can see each file's expiration date in the Expires column of your file list. If you need a file to be kept longer, contact your administrator or professional contact — they can adjust the retention period for specific files.

📅
The server checks for expired files every hour and removes them automatically. Download any files you need to keep before they expire.

🛡 How Virus Scanning Works

Send2Pro integrates with MetaDefender Cloud by OPSWAT to provide enterprise-grade virus scanning. When you scan a file, it's submitted to MetaDefender and analyzed by 30+ antivirus engines simultaneously — including names like Avira, Bitdefender, ClamAV, ESET, Kaspersky, McAfee, and many more.

Scanning is optional but strongly recommended, especially for files received from external sources via share links. You can scan files one at a time or in bulk.

Scan a Single File

1
Find the file in My Files

Go to the My Files page and locate the file you want to scan.

2
Click the scan button

In the Actions column, click the Scan button (shield icon). The scan will begin and may take up to a couple of minutes depending on file size.

3
View the results

Once complete, the Scan Status column will update to show Clean or Infected. Click on the status badge to see the detailed results from each antivirus engine.

Send2Pro Scan Button

Scan All or Selected Files

You can scan multiple files at once using the batch actions at the top of your file list.

1
Select files

Use the checkboxes to the left of each file to select specific files, or use the Select All checkbox in the table header.

2
Click "Scan Selected" or "Scan All"

Scan Selected scans only the files you've checked. Scan All scans every file in your account.

3
Monitor progress

A progress bar appears showing how many files have been scanned. Each file's status updates in real time as results come in.

Send2Pro Batch Scan Progress

Reading Scan Results

After a scan completes, you can click the scan status badge on any file to open a detailed results modal. This shows:

FieldDescription
Total EnginesThe number of antivirus engines that analyzed the file (typically 30+).
DetectionsHow many engines flagged the file as potentially malicious.
Engine ListEach engine's individual verdict — whether it detected a threat and, if so, the threat name.
Send2Pro Scan Results Modal
🚨
If a file is flagged as Infected, do not open or download it. Contact your administrator or the person who sent it to verify the file is safe.

🔗 Generate an Upload Link

Share links let anyone upload files directly to your Send2Pro account — without needing a username or password. This is perfect for receiving files from clients, partners, or anyone outside your organization.

1
Click "Generate Upload Link"

On the My Files page, click the Generate Upload Link button in the action bar at the top.

2
Copy the link

A modal appears with a unique upload URL. Click Copy to copy it to your clipboard.

3
Share it

Send the link to the person you'd like to receive files from — copy it to your clipboard, or use the built-in Email this link section that appears below the URL to deliver it directly from Send2Pro (see Email an Upload Link).

Send2Pro Share Link Modal
📅
Share links expire automatically after 30 days. You can revoke a link at any time if you no longer want to accept uploads through it.

Email an Upload Link

Send2Pro can deliver an upload link straight to a recipient's inbox with a branded email — no need to copy the URL into another app. You can email the intended member user (using the email address on file for their account), add any number of additional recipients, and include an optional personal message.

From the Generate Upload Link modal

Available to any user who can generate share links.

1
Open the share link modal and generate or select a link

Click Generate Upload Link to create a new one, or click the ✉ Email button next to any existing active link in the list below to email it.

2
Choose who receives it

The Email this link section shows a checkbox to send to the member user at the email address on their account (automatically checked when an email is on file). Below it, under Additional recipients, click + Add another email to add any number of extra addresses — up to 25 recipients per send.

3
Add an optional message (optional)

Use the Optional message box to include a short note that will be shown prominently in the email body above the upload button.

4
Click Send Email

Send2Pro queues the emails and shows a toast confirming how many were sent. Each recipient receives a branded message with the upload link, the expiration date, and your optional note.

Quick Email from the Admin & Professional dashboards

For admins and professionals managing other users' accounts, Send2Pro offers a one-click shortcut that skips the full Generate Upload Link modal.

1
Click the ✉ Email Link button

In the Admin user list or the Professional assigned-clients view, each user row now has an ✉ Email Link button. Click it to open the compact Email Upload Link modal for that user.

2
Send2Pro prepares the link automatically

If the user already has an active upload link, Send2Pro reuses it. Otherwise it generates a new one in the background. You'll see the link ready to copy, along with its expiration date.

3
Choose recipients and send

The same recipient controls appear — the member checkbox, additional email fields, and optional message. Click Send Email and the modal closes automatically once delivery succeeds.

📧
Who can email links for whom? Members can email links only for their own account. Professionals can email links for themselves or any of their assigned client accounts. Admins can email links for any user.
🛡
No account-on-file email? If the member user doesn't have an email address set on their account, the "Send to member" checkbox is hidden and replaced with a note. You can still email the link to any addresses you add under Additional recipients.

What the Recipient Sees

When someone opens your share link, they'll see a branded Send2Pro upload page. It tells them whose account they're uploading to, when the link expires, and provides a simple drag-and-drop upload zone. They don't need to create an account or sign in.

Send2Pro Public Share Upload Page

Once the sender uploads their files, they'll appear in your My Files list automatically. We recommend scanning any files received via share links before opening them.

Managing Active Links

You can view and manage all your active share links from the share link modal. Each link shows when it was created, when it expires, and gives you the option to revoke it.

1
Open the share link modal

Click Generate Upload Link on the My Files page to open the modal.

2
Review active links

Below the link generator, you'll see a list of all your active (non-expired) share links with their creation and expiration dates.

3
Email or revoke any active link

Each active link has two buttons next to it: ✉ Email to send that specific link to one or more recipients (see Email an Upload Link), and Revoke to immediately deactivate it. Anyone trying to use a revoked link will see an error message.

Send2Pro Active Share Links

🔐 Change Your Password

1
Go to Settings

Click Settings in the sidebar under the Account section.

2
Enter your current password

Type your existing password in the Current Password field.

3
Enter and confirm your new password

Type your new password and confirm it, then click Change Password.

Send2Pro Change Password
⚠️
Choose a strong password that's at least 6 characters long. Avoid reusing passwords from other services.

🔑 MetaDefender API Key

If your administrator has not pre-configured a MetaDefender API key, or if you'd like to use your own key, you can set it in Settings.

1
Get a free API key

Visit metadefender.opswat.com and create a free account to get your API key.

2
Enter it in Settings

Go to Settings, find the MetaDefender API section, paste your key, and click Save API Key.

3
Test the connection

Click Test Connection to verify the key is valid and MetaDefender is reachable.

Send2Pro MetaDefender API Key Settings

📈 Scan Status Reference

StatusMeaningWhat to Do
Not Scanned This file has never been scanned. Click Scan to check it, especially if received from an external source.
Pending A scan is currently in progress. Wait for the scan to finish. This typically takes 30 seconds to 2 minutes.
Clean No threats were detected by any antivirus engine. The file is safe to download and open.
Infected One or more antivirus engines flagged this file as malicious. Do not download or open this file. Contact your administrator.

🔧 Troubleshooting

"Your connection is not private" warning

This appears when your Send2Pro instance uses a self-signed SSL certificate (common for local or test setups). Click AdvancedProceed to [site] to continue. Your connection is still encrypted. On production instances with a proper domain (e.g., yourcompany.send2pro.com), this warning should not appear.

Scan fails or times out

This usually means the MetaDefender API key is missing, invalid, or the service is temporarily unreachable. Go to Settings and click Test Connection to diagnose the issue. If the connection fails, try saving a new API key or check your internet connection.

"MetaDefender not connected" message

The Virus Scanner page shows the current MetaDefender connection status. If it says Disconnected, check your API key in Settings. If you don't have one, visit metadefender.opswat.com to sign up for a free key.

File doesn't appear after upload

Refresh the page and check the My Files section. If the upload progress bar completed but the file isn't listed, there may have been a network interruption. Try uploading again.

Share link says "expired" or "invalid"

Share links expire after 30 days. If you need to receive files, generate a new link from the My Files page. If the link was revoked by you or your administrator, it will also show as invalid.

Share link email didn't arrive

Ask the recipient to check their spam or junk folder — emails come from notifications@send2pro.com. If the toast on the dashboard said "Sent to 1, failed for 1 (address@example.com)", the address listed is the one the mail server couldn't deliver to; double-check it for typos. If none of the recipients received anything after multiple attempts, contact your administrator — there may be a mail-server issue on the Send2Pro host.

Can't log in with my credentials

Double-check your username and password for typos. Usernames are case-sensitive. If you've forgotten your password, contact your administrator — they can reset it for you from the Admin Dashboard.

Frequently Asked Questions

How long are files kept?

Files are stored for 30 days by default, after which they are automatically deleted. Your administrator or professional contact can adjust this period for specific files if needed.

Is there a file size limit?

There is no hard-coded file size limit in Send2Pro itself. However, very large files may be limited by your server's configuration or available disk space. Contact your administrator if you need to upload unusually large files.

Can other people see my files?

No. Your files are only accessible to you, your administrator, and any professional account that has been assigned to you by the admin. Other regular members cannot see or access your files.

Are my files encrypted?

Files are transferred over HTTPS (encrypted in transit) and stored on the server. The connection between your browser and the server is encrypted using TLS/SSL.

Can I use Send2Pro on my phone?

Yes. Send2Pro's interface is responsive and works in mobile browsers. Simply navigate to your Send2Pro URL on your phone's browser, sign in, and you can upload, download, and manage files just like on a desktop.

What happens if I don't scan a file?

Nothing — scanning is optional. However, it's strongly recommended to scan any files received from external sources (e.g., via share links) before opening them on your computer.

Can I get back a deleted or expired file?

No. Once a file is deleted (manually or by expiration), it is permanently removed from the server and cannot be recovered.

Does the person who receives an emailed share link need a Send2Pro account?

No. Emailed share links work exactly like links you copy-and-paste yourself — the recipient clicks the button in the email, lands on a branded upload page, and can upload files without signing up for anything. They can't see or download existing files in the account, only upload new ones.

How many people can I email a share link to at once?

Up to 25 recipients per send. Duplicate addresses are ignored automatically. If you need to reach more than 25 people, just click Send Email again with a fresh batch.