No. 18 of 76 ·Transactional SMS Software

QuickAuth Transactional SMS API

Web · Android · iPhone · API

Freedom report

Two barsScore 5.4

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

QuickAuth Transactional SMS API is ranked #18 of 76 in transactional SMS software on Freedom251. It runs on Android, API, iOS, Web.

QuickAuth Transactional SMS API plans and pricing

All plans

Custom volume pricing Not published Quoted within 24 hours based on monthly volume, channel mix, template categorization, and fallback patterns Volume-based pricing · DLT registration included · authentication and bulk WhatsApp combined in one INR agreement quickauth.in · 4 Oct 2026

Compared on transactional SMS software

SMS API: Yes
Delivery status: Yes
Webhooks: Yes

Best QuickAuth Transactional SMS API alternatives

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One bar ClickSend SMS API Paid plans No. 1—6.5 Two bars Mailchimp Free tier No. 2Free6.5 No signal Bandwidth Messaging API Paid plans No. 3—6.4 No signal Telnyx SMS API Paid plans No. 4$500/mo6.4 One bar Textmagic Paid plans No. 5$0.05/mo6.4 One bar Bird Verify Free tier No. 6Free6.3

The record

Product: QuickAuth provides one API for authentication, WhatsApp, SMS, RCS, and email messaging.
OTP routing: OTP can be sent over WhatsApp first with DLT-registered SMS as an automatic fallback when WhatsApp does not deliver.
OTP autofill: Its SDK supports OTP auto-read or autofill on Android and iOS.
API and SDKs: The HTTP API supports webhooks, server-side retries, and fallback, with SDKs for web, React Native, iOS, Android, and Flutter.
Bulk messaging: Bulk WhatsApp campaigns can use a pool of WABAs, with sender and template health rechecked between waves.
Campaign analytics: The platform says it tracks WhatsApp template button taps per recipient and campaign and offers audience segmentation.
DLT setup: QuickAuth says its team handles DLT registration, sender IDs, and template approvals, usually within 24 hours, at no extra charge.
Fraud controls: The service describes suspicious-prefix scoring, velocity and ratio heuristics, per-IP and per-device quotas, and optional device fingerprinting to limit SMS-pumping fraud.
Data and compliance: QuickAuth says data is stored in Mumbai, phone numbers are hashed, OTPs are deleted five minutes after verification, and the service is SOC 2 Type II and aligned with India's DPDP Act 2023.
Support: The site offers human onboarding and says its team typically starts DLT, WABA, and Meta verification setup within a few hours, with a response within 24 hours.
Pricing limits: The company does not publish a fixed price list; quotes depend on monthly volume, channel mix, template categories, and fallback patterns.
Free tier: The site states that a free tier is included and no credit card is required.

Where it ranks on Freedom251

Best Transactional SMS Software in 2026#18 of 76

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Sources

quickauth.in· checked 4 Oct 2026