Clean & De-Duplicate Real Estate Lead Lists Faster
Clean Lead Lists Before Skip Tracing, Not After
GoSiftly is a Google Sheets add-on designed to be used before skip tracing.
It compares every new list against everything you’ve ever imported before so you don’t re-purchase owner data you already have and you can immediately see when a lead owns multiple properties, whether they’re new or already in your system.
That context lets you catch repeat ownership early, avoid paying for data twice, and approach true portfolio owners differently from single-property leads.
When You Should Use GoSiftly
Think of GoSiftly as your first stop after pulling any list and before you spend a dollar skip tracing it.
New list? Run it through GoSiftly first to remove duplicate owners and surface portfolio owners before exporting.
Old lists? Import them once to establish a clean historical baseline.
Every future list? Run The Import Detective to compare new data against everything you’ve imported before, keeping duplicates and repeat owners from quietly re-entering your workflow.
👉 The goal is simple:
Stop paying for the same leads repeatedly.
Stop re-uploading duplicates.
Stop letting messy data clog your CRM and inflate your marketing costs.
This one step protects your entire workflow and prevents wasted marketing spend.
The Costly Problems GoSiftly Eliminates
Most duplicate costs don’t come from obvious mistakes, they come from repeat ownership that’s easy to miss.
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The same owner appears on different lists months apart
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Portfolio owners resurface under slightly different property data
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Old contacts quietly re-enter new uploads
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CRM and dialers fill up with repeated records
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Skip tracing and marketing dollars get spent again without notice
GoSiftly adds historical awareness to your workflow so these issues are caught before data moves downstream, when mistakes are cheap to fix instead of expensive to undo.
How It Works
Install GoSiftly
Install GoSiftly from the Google Workspace Marketplace and create your workspace in Google Sheets.
Your file runs in your private Drive, and all data stays fully under your control.
Import Your Lists
Add your latest lists directly into GoSiftly.
Duplicates between your new and old data are automatically filtered upon import.
Run the Scan
Use 🕵️ The Import Detective to catch deeper duplicates across all past imports and instantly identify both new and known portfolio owners.
Features
📥 Import
Quickly add your latest lists into GoSiftly. Supports large files, just drop them in and let the tool do the heavy lifting.
🕵️♂️ Import Detective
Scan your new lists against all past imports.
Automatically detects repeat contacts and identifies both new and known portfolio owners.
Prevents wasted marketing time and paying to skip-trace the same leads repeatedly.
📤 Export
Download a perfectly cleaned, Deduped list ready for skip tracing, mailers, or your CRM as well as a Portfolio Report. Saves hours of manual cleanup.
🔄 Reset
Clear out old data with one click and reset your workspace for a fresh batch. No more messy leftovers between imports.
Let's Take a Quick Tour
See How Easy GoSiftly Makes It
Choose Your Plan
🆓 FREE
• 50 Detective scan tokens per month
• 500 imports per month
• Export cleaned data within your monthly limits
⭐ STARTER - $59 per year (Just $4.92 per month)
• 200 Detective scans per month
• 5,000 imports per month
• Export all cleaned data
🚀 PROFESSIONAL - $99 per year (Just $8.25 per month) * RECOMMENDED
• Unlimited Detective scans
• 15,000 imports per month
• Cross-property duplicate detection
• Export all cleaned data
💎 ENTERPRISE - $199 per year (Just $16.58 per month)
• Unlimited Detective scans
• Unlimited imports
• Cross-property duplicate detection
• Priority support
⚡ All plans include:
• Automatic duplicate filtering between new and old lists
• Secure Google Drive data handling
• Access to all future updates via the Marketplace
💡Comparable tools charge $50–$200 per month
That’s $600–$2,400 every year.
Instant ROI Guarantee:
One avoided skip trace on a big list could save you $50–$200 instantly.
GoSiftly often pays for itself the very first time you use it.
How GoSiftly Works With Google Marketplace
Using GoSiftly is simple. Here’s exactly how installation, activation, and licensing work together:
1. Install the GoSiftly Add-On
You’ll click the link we provide (or search “GoSiftly” in the Google Workspace Marketplace). Then install the add-on to your Google account.
2. Open a New Google Sheet
GoSiftly appears inside the Extensions menu of any sheet you open.
3. Create Your Workspace
Click Extensions → GoSiftly → Create Workspace.
This builds your full GoSiftly workspace (Start Here, Instructions, Old List, New List, Results, and all system tabs).
4. Purchase Your License Key
Choose the plan that fits your workflow on our website.
After checkout, you’ll instantly receive your license key.
(Keep your Google Sheet open, you’ll activate your key next.)
5. Activate Your License Inside GoSiftly
Go back to your Google Sheet and click:
Extensions → GoSiftly → Activate Pro License
Paste in your key to unlock your tier (Starter, Professional, or Enterprise).
6. Start Importing & Cleaning Your Lists
Once activated, all features are ready to use, imports, list-to-list filtering, deep duplicate scanning, and portfolio owner detection.
