Go to the official Sendblaster website -> "Support" -> "License verification." Step 2: Enter your email and license key. Step 3: If it says "Invalid," the key is stolen or cracked.
In March 2024, a small e-commerce owner used a cracked Sendblaster 4 Pro license key found on a Russian forum. One week later, his SMTP credentials were stolen. Hackers used his Gmail account to send 500,000 phishing emails. Google permanently blacklisted his domain. He lost his legitimate business email forever. Sendblaster 4 Pro License Key