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DupeGuard
- by Silver Shark OÜ
- Free plan available
- by Silver Shark OÜ
- Free plan available
Stop customers from reusing your one-time discounts under different emails. Includes a free audit showing how much abuse already cost you.
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About the DupeGuard
DupeGuard stops discount abuse by catching customers who reuse your one-time discounts under different emails. Install it to get a free audit of your recent orders that shows exactly how much discount abuse has cost you in dollars.
The app looks beyond email addresses to link accounts belonging to the same shopper — spotting Gmail aliases, disposable inboxes, and repeat phone numbers. Every flag includes a plain-language explanation with clear evidence, so you know exactly why accounts were linked. Shared addresses alone won't trigger a flag, keeping roommates safe.
You control how it works: monitor for insights, flag suspicious orders, or block repeat abusers. Auto-cancel is always opt-in, giving you full control over your discount protection.
Launched: August 13, 2026
Key features
- Audit of your recent orders - see what discount abuse already cost you
- Links one shopper's accounts by email alias or repeat phone number
- Every flag explained in plain language with the evidence behind it
- Roommates stay safe - a shared address alone never links two accounts
- Choose monitor, flag or block - auto-cancel is always opt-in
Integrations with:
- Checkout
Category:
Pricing of DupeGuard
Free
Free
- Free audit of your recent orders
- Ongoing duplicate-identity detection
- Plain-language reason on every flag
- Merge, split or allowlist households
- Records only - never cancels or blocks
- No credit card
Starter
$19 / month
- Everything in Free
- Turns repeat claimants away at checkout
- Auto-cancel and refund, off by default
- Pick which discount codes are protected
- Adjustable strictness
- Best under ~100 orders a month
Growth
$79 / month
- Everything in Free
- Turns repeat claimants away at checkout
- Auto-cancel and refund, off by default
- Pick which discount codes are protected
- Adjustable strictness
- Best for ~100-500 orders a month
Scale
$199 / month
- Everything in Free
- Turns repeat claimants away at checkout
- Auto-cancel and refund, off by default
- Pick which discount codes are protected
- Adjustable strictness
- Best above ~500 orders a month
