StackVerify Works for
Every Business
From OTP verification to bulk marketing campaigns — discover how businesses like yours use StackVerify to communicate smarter across Email, SMS, and WhatsApp.
Powerful for every industry
Whether you're a startup, a growing business, or a large enterprise — StackVerify has a solution for you.
OTP & User Verification
Secure your sign-ups and logins with one-time passwords delivered instantly via the user's preferred channel.
Marketing Campaigns
Run targeted bulk campaigns to thousands of contacts across Email, SMS, and WhatsApp from a single dashboard.
Transactional Notifications
Send order confirmations, payment receipts, shipping updates, and account alerts automatically on every transaction.
Appointment Reminders
Reduce no-shows by automatically reminding your clients of upcoming appointments via SMS or WhatsApp.
Customer Support & Chat
Engage customers in real-time on WhatsApp. Handle support tickets, product enquiries, and follow-up efficiently.
E-commerce Updates
Keep shoppers informed at every step — order placed, shipped, out for delivery, and delivered — across all channels.
Financial Services & Fintech
Send transaction alerts, loan approvals, payment reminders, and fraud warnings instantly to your customers.
Healthcare & Clinics
Send appointment reminders, test results notifications, prescription alerts, and health tips to patients.
SaaS & Tech Platforms
Power your product's authentication, onboarding emails, usage alerts, billing notifications, and team invites.
See StackVerify in action
Send OTPs in milliseconds — on any channel
Your users expect instant verification. StackVerify's OTP API fires one-time codes via SMS, Email, or WhatsApp in under 300ms. Set custom expiry times, retry logic, and fallback channels automatically.
- ✓ Sub-300ms delivery with intelligent routing
- ✓ Automatic fallback: SMS → WhatsApp → Email
- ✓ Configurable expiry, length, and rate limits
- ✓ Simple REST API with SDKs for Node, PHP, Python
{
"phone": "+254712345678",
"channel": "sms",
"expiry": 300,
"length": 6
}
Run campaigns across every channel at once
Upload your contact list, pick your channels, personalise your message with dynamic tags, and hit send. StackVerify handles delivery, tracking, and reporting automatically so you can focus on results.
- ✓ Import contacts via CSV or API
- ✓ Dynamic tags: {first_name}, {company}, {code}
- ✓ Schedule campaigns in advance or send immediately
- ✓ Real-time delivery and open rate analytics
Built for your industry
Join businesses across Africa and beyond who rely on StackVerify every day.
Ready to transform how you communicate?
Join thousands of businesses using StackVerify to reach customers smarter.
