Multi-Channel User Verification. Simplified.
Verify users via SMS,Telegram, Viber, and more with asingle API.
Why Developers Switch to GetOTP
Smart Cost Control
Slash verification bills by prioritizing cheaper channels like Telegram or Email before falling back to SMS.
Traffic Monitoring
Spot AIT and bot attacks early. Real-time logs help you detect anomalies so you don't pay for fake traffic.
Reliable Delivery
Direct routing and simple API logic ensure your OTPs arrive fast, regardless of the user's location or device.
One API. Any Channel.
Stop relying solely on expensive SMS. Reach users reliably and affordably on the apps they actually use.
SMS
The universal channel. Works on every phone, no app required.
Security
Delivery
Cost
Most used for
Universal reach
Reliability
No app needed
Avg. Delivery Time
Price
< 5 seconds
from $0.007/message
Reaches 100% of phone numbers — the fallback every chain ends on.
SMS Docs
From cURL to Production in < 15 Mins
curl --request POST \
--url https://api.otp.dev/v1/verifications \
--header 'X-OTP-Key: {YOUR_API_KEY}' \
--header 'accept: application/json' \
--header 'content-type: application/json' \
--data '
{
"data": {
"channel": "sms",
"sender": "GetOTP",
"phone": "60123456789",
"template": "{YOUR_TEMPLATE_ID}",
"code_length": 4
}
}'Migrate in Minutes, Not Days
Our API is designed as a drop-in replacement for standard verification flows. Just swap your endpoint and API key. No complex refactoring required.
curl --request POST \
--url https://api.otp.dev/v1/verifications \
--header 'X-OTP-Key: {YOUR_API_KEY}' \
--header 'accept: application/json' \
--header 'content-type: application/json' \
--data '
{
"data": {
"channel": "sms",
"sender": "GetOTP",
"phone": "60123456789",
"template": "{YOUR_TEMPLATE_ID}",
"code_length": 4
}
}'Transparent, Usage-Based Pricing
No monthly fees. No hidden contracts. Pay only for successful messages across 190+ countries.
Estimate Your Cost
Select country
Currency
Select channel
Select monthly messages
1k
10k
20k
30k
40k
50k
_
Estimated Cost
Channel
Per message
Volume
SMS
$0
10,000
FAQ
What sender name will my users see?
By default, a shared pre-registered sender. Custom alphanumeric sender IDs are supported and may require registration or an extra fee depending on the country.
Why do SMS prices vary so much by country?
Is SMS OTP secure enough?
What happens if an SMS isn't delivered?
Do you support all countries?