DM
Marketing
Digital Marketing Mastery
Strategy, content, ads and analytics for beginners.
Made for learners in Bangladesh
Learn practical skills.
Build your future.
Short, practical online courses with secure bKash and Nagad payment through KaroPay.
৳ BDT pricingSigned callbacksIdempotent access
Integration status● Demo online
Gateway mode—
Callback verificationMD5 signature verified
Course unlockAfter verified payment
Secrets stay on the server and never enter browser code.
Popular courses
Skills you can use immediately
Start with one live test course. More courses can be connected to the same checkout system later.
UI
Design
UI Design Foundations
Layouts, typography and modern product design essentials.
EC
Business
E-commerce Launchpad
Build, launch and grow an online store in Bangladesh.
Demo course
Complete the full purchase flow
Real KaroPay Bangladesh PAY-IN with a server-verified callback.
↗
DIGITALGROWTH
BEST FOR BEGINNERS
Digital Marketing Mastery
Campaign strategy, content planning, analytics and practical projects for Bangladesh-based learners.
- 24 practical lessons
- Lifetime demo access
- Completion certificate
Demo price৳120.00One-time payment
Validated architecture
How access is granted safely
01
Create order
Server creates a unique pending order in BDT.
02
Gateway checkout
Learner completes payment outside the course page.
03
Verify callback
Server checks signature, amount and currency.
04
Unlock course
Access activates only after verified success.
Security checklist
Built to prevent fake success redirects
- Server-only AppKey and Secret
- Constant-time MD5 signature comparison
- Amount and BDT validation
- Idempotent duplicate callback handling
Payment verified