Vonage API Help Center

Vonage API Help Center

Outbound SMS

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

Question When sending SMS to North America during the Covid-19 pandemic,...

Troubleshooting SMS Delivery

Symptom When sending SMS, the message is not delivered. Unsuccessful del...

Global Sender ID Portal - FAQs

What does the Portal do? You can view Sender ID Country requirements, an...

Global Sender ID Registration Guide

Vonage’s Self-Service Global Sender ID Portal Introducing Vonage’s self-...

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

Symptom Why are my A2P Messages towards Google Voice numbers rejected...

Partner Quota Violation Error

Symptom When sending SMS or making other API requests, you receive an er...

SMS Delivery Failure Error 95 - Unknown

Question When sending SMS, I received a delivery failure error 95 - Unkn...

Vonage SMS API will return Delivery Receipts (DLRs) for each SMS sent, w...

Is USSD supported via SMS for the SMS API?

Question Does Vonage provide support for USSD codes sent via SMS using t...

What countries require STOP management for recipient opt-out?

Question What country destinations require STOP management for recipient...

Sending Emojis in Outbound SMS

Question Can I send emojis in outbound messages? Applies To Outbound SM...

Message Content Truncated in Dashboard

Symptom Message content is truncated in the Dashboard. Applies To Accou...

How does Vonage investigate SMS delivery problems?

Question How does Vonage investigate SMS delivery problems? Applies To ...

Which webhook takes precedence in the Vonage API account dashboard?

Question Which webhook takes precedence in the Vonage API account dashbo...

What kind of Delivery Receipts (DLRs) does the Vonage API platform return?

Question What are the different Delivery Receipts (DLRs) the Vonage API ...

Do US short codes support Puerto Rico mobile networks?

Question Do US short codes support sending SMS to Puerto Rico? Applies T...

Can I send SMS to landline numbers?

Question Can I send SMS to landline, fixed line, or non-mobile numbers? ...

Does each part of a concatenated SMS count towards the throughput for an account?

Question Does each part of a concatenated SMS count towards the throughp...

How is opt-out managed when sending SMS from a US toll-free number?

Question What happens when a user sends STOP to my toll-free number? App...

How do I send SMS to France Overseas departments and territories?

Objective Sending SMS to French overseas territories. Applies To Outbou...

How to Integrate Vonage APIs with Zendesk

Objective Using Vonage APIs with Zendesk. Applies To Vonage Communicati...

Can I use a US toll-free number to send messages to Canada?

Question Where can I send messages using a US toll free number? Applies ...

What is Adaptive Routing?

Question What are the features and benefits of Vonage API's Adaptive Rou...

How will I be charged for concatenated SMS?

Question How are users charged when sending concatenated SMS? Applies To...

What is the difference between A2P and P2P traffic?

Question What is the difference between Application-to-Person (A2P) and ...

Can I send SMS to Premium Rate numbers?

Question What happens if an SMS is sent to a premium SMS number? Applies...

What types of Sender IDs are there?

Question What is a Sender ID and what variations of Sender ID are there?...

How can I integrate Vonage SMS API with Salesforce?

Objective Sending and receiving SMS messages and through the Vonage SMS ...

Can I schedule SMS to be delivered at a later time?

Question Is it possible to delay or schedule sending SMS? Applies To Ou...

Can Vonage APIs deliver SMS to roaming numbers?

Question Can I send SMS to roaming numbers? Applies To Vonage SMS API O...