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Bulk SMS

82

What Are Service Explicit SMS and Service Implicit SMS?
Why do I get a DND error when sending Transactional or OTP messages?
Why should businesses choose SMSGatewayCenter for SMS services?
What are the benefits of using an SMS Gateway for bulk messaging?
What does Promotional SMS mean?
What is meant by Transactional SMS?
How do International Long Distance Operator (ILDO) routes work for SMS to India?
General
SMPP
Send SMS
Integrated OTP SMS
Two-way SMS
- How do Long Codes and Short Codes compare?
- What’s the distinction between Dedicated and Shared Long Codes?
DLT
Sender ID
Scheduled SMS

WhatsApp Business API

62

What are the different message types available on the SMSGatewayCenter UI for WhatsApp Business API, and how can I send them?
How do I understand and use the MO response format when setting up a webhook for WhatsApp Business API with SMSGatewayCenter?
How do I set up and use the WhatsApp Message Sequencer to send messages in a specific order with SMSGatewayCenter?
How do I get opt-in consent from customers and manage them for WhatsApp messaging using SMSGatewayCenter?
How do I set up a WhatsApp retargeting campaign using the Retarget Users feature on SMSGatewayCenter?
Does SMSGatewayCenter support WhatsApp for specific industries?
Can I send low balance alerts via WhatsApp Business API?
How can WhatsApp Business API help with transactional updates?
Can I use WhatsApp Business API for marketing campaigns?
How can I use WhatsApp Business API for customer support?
What are the benefits of using WhatsApp Business API with SMSGatewayCenter?
Can I broadcast messages to multiple customers at once?
How can I track the performance of my WhatsApp messages?
Can I integrate WhatsApp Business API with my existing systems?
What should I do if my WhatsApp Business API account gets banned?
Does SMSGatewayCenter support two-way communication on WhatsApp?
How can I avoid getting banned from WhatsApp Business API?
What is the 24-hour Customer Care Window, and how does it work?
How do I create and use message templates for WhatsApp?
Can I send rich media like images or PDFs through WhatsApp?
Does SMSGatewayCenter support WhatsApp chatbots?
Can I send messages in multiple languages?
Can I send personalized messages to my customers?
Can I automate messages with the WhatsApp Business API?
What types of messages can I send using the WhatsApp Business API?
Do I need a verified business profile to use the WhatsApp Business API?
What’s the difference between the WhatsApp Business API and the WhatsApp Business App?
How do I sign up for WhatsApp Business API with SMSGatewayCenter?
What is the WhatsApp Business API, and how does SMSGatewayCenter support it?
Agents Chat
Template Messages
Troubleshoot

OBD Voice Call

10

How can I use SMSGatewayCenter to send multi-language voice messages through Bulk Voice Call and OBD services?
What steps should I take to ensure compliance with regulations when using SMSGatewayCenter’s Bulk Voice Call service for promotional messages?
What advantages does SMSGatewayCenter’s Bulk Voice Call and OBD services offer to businesses in India?
How can I use SMSGatewayCenter’s Voice Call API to automate Bulk Voice and OBD campaigns, and what are the key parameters?
How do I schedule and manage Bulk Voice Call campaigns using SMSGatewayCenter, and what features are available?
What are the different use cases for Bulk Voice Call and OBD services offered by SMSGatewayCenter, and how can they benefit my business?
How does SMSGatewayCenter’s Text-to-Speech (TTS) feature work with Bulk Voice Call and OBD services, and what are its benefits?
How does SMSGatewayCenter ensure that transactional voice messages via OBD are delivered reliably, even with DND restrictions?
How can I leverage Bulk Voice Call service to run promotional campaigns in India?
What are Bulk Voice Call and OBD services, and how does SMSGatewayCenter support them for businesses in India?

Users

43

Why was Calculation Units Display feature introduced?
How does Calculation Units Display feature benefit my business?
Where can I see my wallet balance in calculation units?
Will the (Calculation Units Display) calculation account for different SMS types, like promotional or transactional messages?
How does the Calculation Units Display calculate my SMS units?
What does the Calculation Units Display feature do?
How Do I Check My Account Balance on SMSGatewayCenter?
What Types of Credits Does SMSGatewayCenter Offer?
What changes when I upgrade from Sandbox to a paid account?
Can I test DLT SMS compliance in the Sandbox Account?
Why test with a Sandbox Account before going live?
How do I verify SMS delivery in the Sandbox Account?
How do I send a test SMS from the Sandbox Account?
How can I add more mobile numbers to my Sandbox whitelist?
Are there restrictions when using the Sandbox Account?
What occurs after enabling my Sandbox Account?
What choices do I have when setting up the SMS Sandbox?
How do I activate my Sandbox Account on unify.smsgateway.center?
What is a Sandbox Account used for at SMSGatewayCenter?
Account
Rate Plan
API Key

Resellers

49

Will My Domain have SSL with SMSGatewayCenter, and is it Chargeable?
Does SMSGatewayCenter Charge for Reseller Setup?
What Domain Should I Point to SMSGatewayCenter?
How Can I Point My Domain to SMSGatewayCenter?
Can I customize the color theme of my email templates as a reseller?
Are there standard email templates for all alerts?
How do I send low balance alerts via WhatsApp Business API?
Can I include social site links in my email templates?
Is it possible to enable sandbox for all products as a reseller?
How do I add my own privacy, terms, and disclaimer content?
Can I customize the contact form page with my address and content?
What happens if I don’t customize email templates?
Can I disable WhatsApp low balance alerts after enabling them?
How do social site links in emails benefit my reseller business?
What products can I enable sandbox for, and why?
Can I add sender names for my users as a reseller?
How do I modify the status of my users’ sender names?
Is it possible to add DLT templates for my users?
Can I update the status of my users’ DLT templates?
How do I view whitelisted mobile numbers for sandbox users?
Where can I check pricing adjustments for my users?
Can I bulk import sender names for multiple users at once?
What happens if I disable a user’s DLT template?
How do pricing adjustments affect my reseller profits?
Can I remove all whitelisted numbers from a sandbox user?
Can I use my own email to send messages as a reseller?
How do I set my own OTP SMS template for downline users’ logins?
Will the Postman collection reflect my brand as a reseller?
How can I showcase my third-party CRM integrations to users?
Is it possible to disable the sandbox feature for new signups?
Can I set default credits or wallet amounts for sandbox users?
How do I benefit from SMTP connectivity as a reseller?
What happens to my downline users if I disable the sandbox?
Can I offer my own pricing with custom OTP templates?
How do third-party integrations enhance my reseller business?
What is the Bulk SMS Reseller Program at SMSGatewayCenter?
How can I join the SMSGatewayCenter reseller program?
What features does the reseller program offer?
What are the benefits of becoming a bulk SMS reseller with SMSGatewayCenter?
How does SMSGatewayCenter support its resellers?
Can I customize the reseller panel for my brand?
Who can become a reseller with SMSGatewayCenter?
What types of SMS services can I resell?
How secure is the reseller program for my clients’ data?
What tools help my customers manage SMS campaigns?
How does the reseller program compare to other SMS types?
What choices do I have when setting up the SMS Sandbox?
How do I activate my Sandbox Account on unify.smsgateway.center?
What is a Sandbox Account used for at SMSGatewayCenter?

API

20

How do I secure my API keys in a production environment?
What should I do if my API request times out?
Solving Common Verify OTP API Problems
Step-by-Step Guide to Using SMSGatewayCenter Verify OTP API
Troubleshooting Common OTP SMS API Issues
How to Integrate SMSGatewayCenter OTP SMS API
Developer API Types for Sending Messages via SMSGatewayCenter
How can I ensure my API Integration complies with DLT Regulations in India?
What are the Prerequisites for using the SMSGatewayCenter APIs?
How Do I Handle Bulk SMS Sending with the SMS API?
What programming languages can I use to Integrate SMSGatewayCenter APIs?
How do I debug if my API is not working?
How Can I Integrate the Voice Call API into My Application?
How Do I Send a “+” Sign in an SMS Using the API?
How Can I Integrate the WhatsApp Business API with SMSGatewayCenter?
How Can I Integrate the SMS API into My Application?
Why is my API key hidden, and how can I reveal it?
How do I regenerate an API key securely?
What should I do if my API key isn’t working?
How do I generate a new API key?

Reports

12

What management actions can I take on uploaded files in SMSGatewayCenter, and are there any limitations to these actions?
Why do I see ‘No records found’ in the Uploaded Files section on SMSGatewayCenter, and how can I resolve it?
What options are available for managing uploaded files on SMSGatewayCenter, and how can I use them?
What steps should I follow to search for uploaded files on SMSGatewayCenter, and what search criteria are available?
How does the Uploaded Files feature on SMSGatewayCenter help me send bulk SMS, and what does it include?
How do I receive delivery reports via SMPP?
What information is included in the Current Day’s Summary under the Delivery Report section?
What are Archived Reports?
How Can I Retrieve a Delivery Report for a Specific Phone Number?
What Do the Different Statuses in Delivery Reports Mean?
How Can I Export or Download Delivery Reports?
What is the difference between a Delivery Summary and a Delivery Report?

Security

3

Can I Disable Message Encryption at Any Time?
Can I Use the Same API Key or Secret Token for Message Encryption?
What Security Measures Can I take to Protect My SMSGatewayCenter Account?

Integrations

41

Contact Form Integration
Shopify Messaging

Groups & Contacts

2

How to Manage Contacts for Targeted Messaging in SMSGatewayCenter
How to Manage and Create Groups for Targeted Messaging in SMSGateway.Center

Troubleshoot

2

Why Am I Seeing the “Error: DLT Rejected” on SMSGatewayCenter?
Why Am I Getting the “Error: No Valid Phone Numbers Found!” on SMS Gateway Center?

Smart Links

7

How can I create a new Smart Link using the SMSGatewayCenter platform?
How do I view and understand the analytics data for a specific Smart Link on SMSGatewayCenter?
How can I check the analytical report for my Smart Links on SMSGatewayCenter?
What kind of attachments can be sent using Smart Links?
Can I use my own short domain for Smart Links?
Can I create a smart link while sending SMS using your system?
What is Smart Link?

Webhook

17

Is it possible to create multiple webhooks for the same product?
What HTTP methods are supported for sending webhook data?
What happens if my webhook URL is unreachable or fails to respond?
Can I use HTTPS for my webhook URL?
Is webhook support available for all plans?
Can I change the webhook URL after it’s saved?
What should I return from my endpoint after receiving the webhook?
Do you retry webhook delivery on failure?
What are the benefits of using webhooks with SMSGatewayCenter for SMS and WhatsApp campaigns, and how do they improve my workflows?
Why do I see ‘No entries found’ in the Manage Webhooks section on SMSGatewayCenter, and how can I resolve it?
What parameters must I specify when setting up a DLR webhook on SMSGatewayCenter, and are there additional parameters for WhatsApp?
What is the process to test a webhook configuration on SMSGatewayCenter, and how can I verify it works correctly?
What steps should I follow to add custom parameters and headers to a webhook on SMSGatewayCenter, and why are they useful?
What options are available for managing webhooks on SMSGatewayCenter, and how can I view or edit them?
What is the process to configure a webhook for receiving WhatsApp Mobile Originated (MO) responses on SMSGatewayCenter?
What steps should I follow to set up a Webhook for receiving SMS or WhatsApp Delivery Receipts (DLR) on SMSGatewayCenter?
What are Webhooks, and how can SMSGatewayCenter help me implement them for SMS and WhatsApp integrations?

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What HTTP methods are supported for sending webhook data?

What HTTP methods are supported for sending webhook data?

Updated on 16/05/2025

< 1 min read

We support:

POST
GET
JSON
XML

Updated on 16/05/2025

Is it possible to create multiple webhooks for the same product?What happens if my webhook URL is unreachable or fails to respond?

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SMSGatewayCenter

SMS Gateway Center is an experienced provider of Bulk SMS, Voice Call, and WhatsApp Business API solutions, allowing businesses to focus on servicing their customers. With years of experience in messaging technology, we serve various industries and guarantee exceptional technology enabled messaging services.

We provide unrivaled scalability, security, and delivery speed on our platform which is unmatched across the industry. Work with us to improve customer engagement, optimize communications, and rocket your marketing initiatives.

Your communication, simplified.

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