Pak Sender SMS & Voice OTP

One-time passwords protect logins, payments and sign-ups. With Pak Sender you can deliver them over both SMS and Voice, so verification succeeds even when one channel fails.

SMS OTP

A short code arrives by text within seconds. It works on every phone with no internet, which makes it the broadest and most popular way to verify users in Pakistan.

Voice OTP

When a text is delayed or the user cannot read it, an automated call reads the code aloud. It is the perfect backup to guarantee delivery.

Automatic Fallback

• Set SMS as the primary channel.
• If it is not confirmed, a Voice call follows automatically.
• Your verification success rate climbs without extra work.

Built for Developers

Trigger both channels through one simple API with ready-made code examples. Add secure OTP verification to your website or app in an afternoon.

Get Started with Pak Sender

Pak Sender is an all-in-one business communication platform for Pakistan — Bulk SMS, Voice OTP, WhatsApp, Email marketing, automated invoices and a full REST API, all in one account. Create a free account, add balance, and send your first message in minutes.