Twilio (SMS & OTP)
Pricing:
Twilio is a leading service provider for SMS and OTP validation.
SMS cost: Typically around $0.0075 per SMS for the US, but rates vary based on country and volume.
OTP: Twilio also offers two-factor authentication (2FA) services for OTPs with competitive pricing.
Pros:
Reliable, easy to use, and has extensive documentation.
Global reach with support for many countries.
Cons:
Can become more expensive as volume increases.
Nexmo (Vonage)
Pricing:
SMS cost: Starts around $0.0065 per SMS (USD).
OTP is supported by Nexmo’s 2FA API, which is cost-effective.
Pros:
Great for global SMS delivery.
OTP generation and validation is also supported.
Cons:
Some customers report occasional delays with messages.
Plivo
Pricing:
SMS cost: Around $0.0065 per SMS (USD).
OTP and 2FA services are available with competitive pricing.
Pros:
Reliable, with fast SMS delivery and good customer support.
Cons:
Slightly less popular than Twilio, but still offers a robust API.
TextLocal (UK-based, but global support)
Pricing:
SMS cost: Approximately $0.015 per SMS (USD), rates can vary by region.
Specializes in SMS marketing, but OTP services are also available.
Pros:
User-friendly interface and good for smaller volumes.
Cons:
Slightly higher cost compared to the others for small volumes.
Sendinblue (Email + SMS)
Pricing:
SMS cost: Around $0.01 per SMS (USD).
OTP and email services are included in their offerings.
Pros:
Best for businesses already using Sendinblue for email marketing.
Free tier available for small volumes.
Cons:
Limited reach compared to global services like Twilio.