Disclosure: We may earn affiliate commissions when you enroll in courses through our links at no extra cost to you. This helps us keep Grab4Free free.
When you see a free coupon code on Grab4Free, you can trust it actually works. We don't just copy and paste coupon codes from anywhere—every single one goes through our verification process. Here's exactly how we do it, from collection to expiry.
Why Verification Matters
Expired coupons are frustrating. Students visit our site excited about a free course, click the link, and find out the deal expired months ago. That's a bad experience. We verify coupons to ensure:
- ✓ The coupon code is actually valid and works
- ✓ The link points to a real Udemy course
- ✓ The course description and instructor are authentic
- ✓ Expired coupons are removed promptly
- ✓ No phishing or malicious links sneak through
Our 4-Step Verification Process
Step 1: Collection & Candidate Queue
Coupon candidates come from multiple sources:
- Instructor promotional posts on social media
- Udemy course announcement emails
- Community submissions from students
- Partner coupon feeds and APIs
- Our own scanning tools monitoring instructor pages
Each coupon gets entered into our review queue with a source attribution and candidate status.
Step 2: Automated HTTP & Link Checks
Before any human looks at a coupon, our automated system runs several checks:
- HTTP Status Check: Does the link return a valid response (200 OK or 302 redirect)?
- Redirect Following: If redirected, does the final destination land on a real Udemy course page?
- Coupon Detection: Can we find evidence the coupon code is active on the course page?
- Metadata Extraction: We extract course title, instructor name, rating, student count, and original price
- Security Scan: Is the domain legitimate? (No phishing domain spoofing)
This automated step filters out broken links and obvious fakes instantly. We also check for SSL certificates and HTTPS to ensure the links are secure.
Step 3: Manual Verification for Edge Cases
Not everything can be automated. If our automated checks find inconsistencies—a missing enroll button, rate-limiting, or unusual redirect patterns—a human reviewer steps in:
- They click the link personally
- They attempt to apply the coupon code
- They verify the course details match what's expected
- They check the coupon expiry date if visible
- They add notes about what they found (e.g., "Expires Jan 15, 2026")
This step catches nuances that automation misses and ensures we're only publishing legitimate coupons.
Step 4: Publication & Ongoing Monitoring
Once verified, the coupon is published with:
- A ✓ "Verified" badge so users know we checked it
- The expiry date (if known)
- Affiliate link tracking
- Metadata like course rating and student count
But verification doesn't end at publication. We continuously monitor active coupons:
- Daily automated re-checks to confirm coupons still work
- Automatic archival when a coupon expires
- User reports flag potentially broken coupons for immediate review
- Seasonal updates for instructor promotions
What We Check For (In Detail)
Link Integrity
We verify the link actually leads to a Udemy course and doesn't redirect to phishing sites or malicious content. We check HTTPS security, SSL certificates, and domain legitimacy.
Coupon Validity
We look for signs the coupon is active: visible discount percentage, ability to add to cart, presence of coupon code in URL or page, or explicit mention of "Free" pricing.
Course Authenticity
We verify:
- The course title hasn't been changed or removed
- The instructor is legitimate (checking for instructor impersonation)
- The course preview and rating are authentic
- The course isn't suspended or under review
Expiry Detection
When possible, we note the coupon expiry date. Even if it's not displayed, suspicious patterns (very old coupon links, rarely-refreshed courses) signal upcoming expiry.
How Often Do Coupons Expire?
Most Udemy free coupons last 2-4 weeks, though some last longer. Instructors rotate them frequently to maintain promotion effectiveness. Our daily re-checks catch when coupons expire and remove them within 24 hours.
What Happens If A Coupon Dies?
If you click a coupon and it doesn't work, several things might have happened:
- Expired naturally: Most likely. The instructor's promotion window closed.
- Limit reached: Some coupons have a maximum enrollment limit (rare on Udemy).
- Technical glitch: Udemy platform issue. Try again later.
- Not in your region: Some coupons are region-specific.
If you find a broken coupon on our site, please report it using the feedback button. We'll investigate and remove it if expired.
Our Quality Commitment
Our reputation depends on providing working coupons. A bad experience (expired or fake coupon) costs us more than any commission. That's why we invest in both automated systems and human review.
Published January 5, 2026 | Updated Daily
Have you had a bad coupon experience? Help us improve—report it at info@grab4free.com