Vonage API Help Center

Vonage API Help Center

SMS

SMS

Generic SMS KB articles

Vonage Opt-Out Assist

Toll-Free Number Changes Oct 1, 2022 (FAQ)

Sprint/T-Mobile Network Changes

SMS Verizon Pass-through Fees

Setting a Validity Period (TTL) for SMS/MMS

What encoding standards does Vonage support?

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Country-Specific Features and Restrictions

Central America

Outbound SMS

SMS Best Practices During COVID-19 for Users Sending Traffic to North America

Troubleshooting SMS Delivery

Global Sender ID Portal - FAQs

Global Sender ID Registration Guide

Recommended Sender ID option for A2P Alert and Transactional Messages to US Virtual Numbers

Partner Quota Violation Error

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Inbound SMS

Vonage inbound reach for receiving SMS to our virtual numbers

How long does Vonage retry inbound SMS/DLRs via SMPP connection?

How does Vonage prevent spam inbound messages being sent to Vonage rented LVNs?

Are inbound SMS LVN available all over the world?

Are inbound SMS free of charge all over the world?

Can I only receive inbound SMS without sending outbound SMS?

Why are Verification Codes not received on my virtual number?

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US Short Codes

US Short Code Registry Leases – Brand & Content Provider Vetting Requirements

How-To Complete the US Short Code Program Brief

Can I add a template to my active Alerts shared short code campaign?

Why did my PIN code get sent from a phone number?

Can you receive inbound SMS on dedicated US short codes?

How are STOP requests handled on the Alerts pre-approved short code?

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SMPP

How do I send concatenated messages via SMPP?

“Window of time” to submit a multipart SMS over SMPP

TLS certificates for SMPP nexmo.com

TLS certificates for SMPP vonage.com

Why are SMPP concatenated messages not delivered?

How to Read a Vonage SMPP Delivery Receipt

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US 10 DLC

10DLC - Update - Reseller ID requirements (Jan 2025)

10DLC - Update - Brand Authentication+ verification (Oct. 2024)

10DLC - Update - Introducing campaign updates reviews (Oct. 2024)

10DLC - Update - New campaign requirements (January 2024)

10DLC - Campaign requirements

10DLC - T-Mobile - Traffic Violation Fines (Jan 1st, 2024)

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