Two-Factor Authentication

Add an extra layer of security

Easily verify users by reaching their mobile device with SMS or voice codes. Make your customers feel completely secure.

9:41
Messages
SMSEdge

Your verification code is:

847291

Expires in 5 minutes. Do not share this code.

Just now
iMessage
How It Works

Three simple steps

Sign In
Email
john@example.com
Phone Number
+1 (555) 234-5678
Send Code
1

User inputs information

The user enters their phone number during login or registration.

9:41
Messages

Your code is:

847291

2

Verification code sent

A time-limited, single-use code is delivered via SMS or voice call.

Verified!
Identity confirmed successfully.
Redirecting to dashboard...
3

User verifies

The user enters the code to complete authentication. Access is granted.

Benefits

Why SMSEdge for 2FA

Layer 3: SMS OTP
Layer 2: Device
Layer 1: Password

Protect your business

Ensure safe access by delivering time-limited, single-use authorization codes with passwordless authentication.

Multiple layers of security -- device possession, time-limited codes, and single-use tokens -- work together to keep accounts safe.

Reach their device

With SMSEdge you can feel sure that your messages are going to reach the recipients across 195+ countries.

Direct carrier connections and intelligent route selection ensure maximum deliverability. Automatic failover between routes means codes always get through.

195+ Countries
Cost per Verification
Competitor A
~0.05
Competitor B
~0.04
SMSEdge
~0.02
Average cost in EUR per verification

Cost effective

Our verification solution costs almost the same as the price of one SMS message. Pay only for successful authentications.

No monthly fees, no setup costs, no minimum commitment. Top up your balance and start verifying users immediately.

Full API solution

From authentication management to message automation. Integrate in minutes with our REST API.

Minimize fraud

The second factor minimizes fraud with an extra layer of security tied to the user's device.

Time-limited codes

Authorization codes expire automatically, ensuring stale codes cannot be reused.

99.7%
Delivery Rate
<3s
Average Delivery
190+
Countries
24/7
Uptime
Developer API

Integrate in minutes

A single API call sends a verification code to any phone number worldwide.

Request
curl -X POST https://api.smsedge.com/v2/sms \
  -H "X-API-KEY: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+1234567890",
    "text": "Your verification code is: 847291. Expires in 5 minutes.",
    "sender_id": "Verify"
  }'
Response
{
  "success": true,
  "data": {
    "id": 98234571,
    "to": "+1234567890",
    "text": "Your verification code is: 847291...",
    "status": "sent",
    "cost": 0.008,
    "created_at": "2026-03-10T14:30:00Z"
  }
}
View full API docs

Unleash proprietary SMS technology

Multi-channel delivery ensures your verification codes reach recipients every time.

Global coverage in 195+ countries
SMS and voice code delivery
Full REST API
Real-time delivery reports
Time-limited codes
Pay per successful verification
Multiple route failover
Sub-second delivery
FAQ

Common questions

Ready?

Start using 2FA now

Sign up for a free account and add SMS verification to your app in minutes.

Create Free Account →