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Find the answer to any question, from the basics all the way to advanced troubleshooting.
Common reasons for message failures include:
Check delivery reports for specific error codes to identify and fix issues.
To improve delivery rates:
Contact support if issues persist despite following best practices.
DLT template errors occur when the sent message doesn't match the registered template. To resolve:
Always test new templates with small batches before bulk campaigns.
If your SMS template is approved under the Service Explicit or Promotional category on DLT, messages can only be delivered between 10:00 AM and 9:00 PM, and only to non-DND numbers.
Please verify your template category on the DLT portal and send messages within the permitted time window.
If your SMS template is approved under Service Explicit or Promotional category, delivery to DND numbers is not allowed.
For informational or OTP messages, please get your template approved under the Service Implicit category on DLT.
Service Implicit messages can be delivered to both DND and non-DND numbers, 24×7.
Message delivery may be delayed due to network fluctuations, poor mobile connectivity, active calls, dual-SIM usage, or if the recipient's device is connected to unstable Wi-Fi networks.
Such delays are generally temporary and depend on the recipient's network conditions.
If your mobile number is registered under DND and you are trying to send Service Explicit or Promotional messages, delivery will not be possible.
Please try testing with a Service Implicit category template, as Service Implicit messages are delivered to both DND and non-DND numbers.
When you try to send SMS using the SMSGATEWAYHUB API and receive the error message "Error code 7: Invalid login", it means that one or more of your login parameters are incorrect.
Error code 7 is generated when there is an issue with your login credentials. The login parameters include username and password or apikey. Please check the following:
If the error still persists after verifying the above details, please contact support@smsgatewayhub.com for further assistance.
If you have converted your account to Transactional and receive the error "Error Code 006: Invalid Template", it means the SMS content you are trying to send does not match any of your approved templates.
Transactional SMS can be sent only using pre-approved templates. Please ensure that your message format exactly matches one of the templates approved in your account.
To add a new template:
If the error still persists after using an approved template, please contact our support team at support@smsgatewayhub.com.
If you see the error "Nothing has been imported. Either there is no new data to import, or you have selected the wrong column headings" while uploading an Excel file, it usually means there is an issue with the file format or column mapping.
Please check the following before re-uploading your file:
After correcting the above points, upload the file again. If the issue still persists, please contact our support team at support@smsgatewayhub.com.
Bulk SMS is a service that allows businesses to send messages to many people at the same time using a single platform.
It is commonly used for sending offers, notifications, alerts, reminders, and OTPs. Messages are delivered through telecom operator networks within seconds.
Promotional SMS
Service Explicit SMS
Service Implicit SMS
Transactional Template Category
Transactional SMS is mainly reserved for banks and financial institutions. It is used for sensitive communications such as banking alerts and critical account information. Most businesses do not require transactional category SMS unless approved under regulated categories on DLT.
Choosing the correct DLT template category is important to ensure smooth delivery of your SMS messages.
Always ensure the approved DLT template content matches exactly with the message content while sending SMS to avoid delivery failures.
Complete your DLT registration → Get your Sender IDs and templates approved on DLT → Log in to the SMSGatewayHub portal → Map approved headers and templates under Resources → Go to Send SMS → Upload your contacts → Select your approved template and send.
DLT (Distributed Ledger Technology) is a government-mandated platform introduced by TRAI to regulate SMS communication and prevent spam.
DLT registration is mandatory for all businesses sending SMS in India. Without DLT approval, messages will be blocked by telecom operators.
The DLT process involves the following steps:
Business registration on a telecom DLT portal
Sender ID (Header) creation and approval
Message template creation and approval as per TRAI guidelines
Uploading and mapping approved Sender IDs and templates in the SMSGatewayHub portal
Once these steps are completed, you can start using sms service.
DLT registration charges and validity vary depending on the operator (Smartping, Vilpower, Bsnl, Airtel, Jio, etc.)
Generally all DLT operators charge 5000 + GST = 5900 INR, payable directly on the respective DLT portal.
SMSGatewayHub does not charge any additional fee for DLT registration unless separate DLT assistance or priority support services are requested.
SMS may get rejected due to: unapproved or inactive Sender ID, template mismatch with DLT-approved content, incorrect variable usage, sending messages outside allowed time slots, or DLT mapping not completed in the SMS portal.
A Sender ID (also called Header) is a 6-character alphabet name that appears as the sender of the SMS.
It must be approved on the DLT portal and mapped in SMSGatewayHub before usage.
Yes, you can send both promotional and transactional SMS from the same account, provided:
Separate headers and templates are approved on DLT
Correct message route is selected while sending SMS
SMS messages are generally delivered within a few seconds via direct operator routes. We have multiple high priority routes with a fallback system.
However, delivery time may vary due to network congestion, DLT validation, or operator level checks.
Yes, SMSGatewayHub provides HTTPs & API-based SMS integration for seamless message delivery from applications, CRMs, or websites.
A standard SMS is limited to 160 characters. If your message exceeds this limit, it is automatically split into multiple SMS parts and charged accordingly.
Certain special characters such as ~, ^, {, }, [, ], | consume two characters instead of one, which may reduce the total character limit.
Messenger allows sending long messages of up to 1000 characters. These are split into smaller SMS parts and reassembled on the recipient's device — each part is calculated at 153 characters, as 7 characters are used for concatenation.
An SMS Gateway is a service that allows computers, applications, or websites to send and receive SMS messages without using a mobile phone.
It acts as a bridge between software systems and mobile networks, enabling messages to be delivered using the same telecom networks used for regular SMS.
There are no long-term contracts or commitments required to use the Messenger platform. It operates on a pay-as-you-go basis.
You can purchase SMS credits and use them as needed. However, inbound messaging services may have a minimum term of one month, which is renewable.
SMSGATEWAYHUB services can be used by any Indian business, society, or community group to communicate with customers, staff, members, or contacts via SMS.
With multiple service levels available, it's suitable for organisations of all sizes — from small businesses to large enterprises.
Setting up your SMSGATEWAYHUB account is quick and simple. In most cases, your SMS campaigns can be up and running within minutes.
Once registration and basic verification are completed, you can start sending SMS immediately using the control panel or API.
No, you do not need a mobile phone to use the Messenger platform. All messages are sent and received through the web-based Messenger panel.
All you need is an internet-enabled PC, Mac, or tablet. The website is mobile-friendly, and you can also use the Android app to manage messaging on the go.
Yes, you can easily purchase SMS credits online through your SMSGATEWAYHUB account.
If you face any issues, contact support@smsgatewayhub.com.
No, your SMS credits will never expire. You can use your purchased credits at your convenience without worrying about validity or expiration dates.
You can send messages of up to 1000 characters using the Messenger platform (standard Latin/ASCII characters). Special or Unicode characters may reduce the number of characters per SMS part.
While composing, Messenger displays the character count and SMS credits it will consume.
A standard SMS is limited to 160 characters using Latin (ASCII) symbols. Unicode or special characters may affect the number of characters per SMS part.
Credit calculation works as follows:
Messenger clearly shows character count and credits consumed while composing long messages.
Once you upload all required documents in the proper format, our support team will typically convert your account within 12 business hours.
You'll receive a notification via email once conversion is complete.
No, hard copies are not required. Your account will be converted on receiving soft copies via email at support@smsgatewayhub.com in PDF or JPG format.
Contact: +91-9907922122 | support@smsgatewayhub.com
Yes, you can run promotional campaigns from the same account without creating a new one.
Transactional credits cannot be transferred to promotional credits, as each type has unlimited validity. Simply purchase promotional credits within your existing account.
Yes, SMSGATEWAYHUB supports Unicode SMS for Indian regional languages, using our transliteration tool.
Supported: Assamese, Bengali, Bodo, Dogri, Gujarati, Hindi, Kannada, Konkani, Maithili, Malayalam, Manipuri, Marathi, Nepali, Oriya, Punjabi, Sanskrit, Santali, Sindhi, Tamil, and Telugu.
A standard GSM message supports up to 160 characters; a Unicode message supports up to 70 characters.
Pricing follows the same credit system: 1 credit per message part. Max GSM = 1000 characters; max Unicode = 500 characters.
Your message may consume more than one SMS credit if it exceeds 160 characters (GSM) or 70 characters (Unicode), or if merge fields increase the total character count.
In such cases, the message auto-splits into multiple parts, each consuming one credit.
SMSGATEWAYHUB provides real-time delivery reports, viewable from the Reports section — categorized by Group SMS, Single SMS, API, and Email to SMS.
No, SMSGATEWAYHUB does not provide mobile number data. However, we offer Short Codes and Long Codes that are highly effective for collecting opt-in numbers from customers.
Your data is completely safe with SMSGATEWAYHUB. We do not share, sell, or pass on any customer data.
We use 128-bit encryption, offering security standards equivalent to online banking systems. Refer to our SLA for more details.
Yes, you can import mobile numbers via Excel or CSV, including up to five additional custom fields. For smaller lists, add numbers manually or by copy-paste.
Yes, create custom fields for each contact and upload them along with mobile numbers using Excel.
While composing your message, click on Insert merge fields and select the required field. Messenger automatically sends personalized messages to each contact.
An API key is an encrypted, secure identifier linked to your SMSGATEWAYHUB account, required to authenticate API requests.
Access it under: API Documents → API Codes in the panel.
DLT compliance is mandatory only for messages originating in India. International SMS can be sent after DLT registration, but note: it routes via your operator's international gateway, charges are higher, and delivery depends on carrier agreements.
In such cases, the cost to the sender is charged as per their standard mobile network rates.
Yes, subscribers on any mobile network, Indian or international, can send messages to a DIN/long code, since it uses a standard mobile number format with country code.
Short codes, in contrast, are country-specific.
Excel treats large numbers as scientific notation. Fix: select the column, then Format Cells → Number → Set decimal places to 0.
Yes. If you have a transactional account, you can request a custom Sender ID of your choice at no extra cost. The Sender ID must be 6 characters long and contain only Latin alphabets. Sender IDs help improve brand recognition and ensure professional communication.
Promotional messages, however, are sent using a 6-character numeric Sender ID that is randomly generated and assigned by telecom operators.
You can learn more about the differences between promotional and transactional SMS on our website.
Customers cannot directly reply to Promotional or Transactional SMS since these are sent using a Sender ID.
Yes, you can easily schedule your messages to be delivered at a later date and time. You may choose specific start times and dates, and even set an end date to stop messages from being sent after a certain point.
Staggered messaging is also supported, allowing you to manage responses efficiently instead of receiving all replies at once.
If you need to modify the scheduled time or date, this can be done anytime through the Reports section in Messenger.
SMS is a powerful and universal communication tool. Whether used for sales promotions, customer engagement, or transactional alerts, SMS marketing can be effectively applied across all business sectors.
From retail and healthcare to education, finance, travel, and e-commerce, SMS adapts seamlessly to various industries. Please refer to our case studies to learn how different businesses benefit from mobile marketing.
Bulk SMS messaging allows businesses to deliver text messages to thousands of customers at once using a secure, cloud-based platform. Campaigns are created in minutes by uploading contact lists or selecting saved groups.
Messages are routed through reliable telecom networks to ensure fast delivery, high open rates, and real-time delivery reports.
Sending bulk SMS for your business is simple and efficient. Start by uploading your customer database or capturing leads through forms and integrations. After obtaining customer consent, you can create message templates, schedule campaigns, personalize messages with dynamic fields, and track performance directly from the SMSGatewayHub dashboard.
Sign up for a business account with SMSGATEWAYHUB and either directly buy message bundles from your account or request an invoice directly from us.
Yes, the more messages you buy, the cheaper it gets. See our bulk SMS prices here.
Using our award winning Platform sending messages is a breeze, however if you would like help managing or sending your bulk SMS campaigns, then please consider using our Agency Services or contact our friendly support team for help .
Yes, our SMS gateway can be used reliably from any email software, server or CRM application. Access is free with unlimited recipients. Sign up for a free account, enable SMS, and send messages as emails to support@smsgatewayhub.com.
You can sign up for a free trial in just 30 seconds, no credit card required. Get 20 free texts on sign-up, and pay only for what you send afterward.
DND is a national 'Do Not Disturb' registry put into effect by TRAI to regulate unsolicited commercial calls and messages. Subscribers who don't wish to receive promotional messages can register for DND — effective within 7 days of the request.
Note: Transactional messages can be sent even if the subscriber is registered on DND, since these are solicited and contain no promotional content.
Customers who wish to send transactional messages can request a Transactional account by writing to support@smsgatewayhub.com or calling +91-9907922122. As part of the process, required documents such as an Undertaking of Indemnity and Letter of Consent must be submitted. Sender IDs and message templates also need approval.
Yes. If subscribers have opted in to receive messages from the same category as your business, promotional messages will be delivered to them as per TRAI regulations.
An attachment is an additional file you can send as a link in a text message.
Within the Messenger interface, select the file that you wish to attach in the same way that you would when composing an email. Messenger will convert the file into an easily accessible link within the body of the text message. The file will be hosted securely on our servers. If the document that you wish to attach is smaller than 2 MB in file size, you're good to go. So attaching a file to an SMS message is not only easy, but requires zero IT infrastructure on your end.
When on the 'Send SMS' screen, click to include attachment and we will host it online for you and add the short link in your text message..
There is no extra cost to include an attachment in your text message.
2 MB.
The end user incurs no cost to access files hosted on SMSGATEWAYHUB, apart from usual data charges paid to telecom operators.
We support over 35 popular file formats including AVI, BMP, CSV, DOC, DOCX, DOTX, GIF, JPG, MIDI, MPEG, MOV, MP3, MP4, OGG, PDF, PNG, POTX, PPSX, PPT, PPTX, QT, RA, RAM, TRF, SLDX, SVG, SWF, TIFF, TSV, TXT, VCF, WAV, XLAM, XLS, XLSB, XLSX & XLTX.
Yes, you can track the short link sent as an attachment. Results are tracked and updated in real time — including mobile number, date/time, device, browser and custom fields.
Yes. Use your free inbox to receive replies, or set up a new inbox by purchasing a reply number of your choice — a short code (6-9 digit extensions on 56161) or a 10-digit virtual mobile number (VMN/DIN). You may set up multiple keyword-inboxes with dedicated reply numbers, or a shared reply number per keyword.
Using an inbound text number or short code, you can receive messages at no extra cost. Messages appear in your Messenger inbox and can be forwarded to email automatically.
Short codes only work within the same country. SMSGatewayHub short code 56161 works only in India and supports personalised keywords.
All received messages appear in your SMSGATEWAYHUB inbox, similar to an email inbox.
It costs you nothing to receive replies. The sender is charged their standard network rate.
A keyword routes messages received on shared numbers to the correct inbox. The message must begin with the keyword so the system can identify the destination inbox.
A short code is a shortened phone number used in mobile marketing that allows customers to respond easily. SMSGatewayHub owns short code 56161 and all its extensions in India, enabling automated opt-ins and message routing.
No. Dedicated Inbound Numbers are exclusive to you, so no keyword is required, although optional keywords can still be created for campaigns.
Yes. Inbound messages can be automatically forwarded to up to 20 email addresses per inbox at no extra cost.
Yes. Inbound messages can be forwarded automatically to your handset. This costs 1 SMS credit per forwarded message.
An API allows the automatic sending of text messages, such as car insurance renewal reminders. SMSGATEWAYHUB provides its API free of cost, which can be integrated with your system to send real-time SMS to customers. Messages can be triggered based on events, schedules, or user actions.
It only takes around 10 minutes to get started. Visit our Developers page for documentation and ready-to-use code examples.
The SMS API is completely FREE to use. You only pay for the SMS credits consumed when messages are sent.
API stands for Application Programming Interface. In text marketing, it acts as a bridge between your software and the mobile network, translating your application data into SMS messages for seamless two-way communication.
We offer comprehensive support including:
Typical response time is under 30 minutes during business hours and under 2 hours for 24x7 support tickets.
Plan changes are simple and instant. Log into your dashboard, navigate to the billing section, select a new plan or add credits, make payment, and your account updates immediately with no service interruption. When upgrading, unused credits from the previous plan transfer to the new plan. Enterprise clients with custom requirements can contact our sales team for tailored solutions based on volume and features needed.
Yes, we support multi-user access with role-based permissions, and audit logs track all activities for accountability and security.
Bulk SMS proves valuable across industries: E-commerce and retail use it for order updates, offers, and abandoned cart recovery. Banking and fintech rely on it for OTP, transaction alerts, and payment reminders. Healthcare sends appointment reminders and health tips. Education shares exam schedules, fee reminders, and results. Real estate uses it for property alerts and site visit confirmations. Travel and hospitality send booking confirmations and itinerary updates. Logistics provides delivery tracking and ETA notifications.
E-commerce businesses leverage SMS for multiple use cases: Send order confirmation and tracking updates (transactional), abandoned cart recovery reminders with incentives, flash sale and limited-time offer alerts, back-in-stock notifications for waitlisted products, delivery date confirmations and delays, COD payment reminders, customer review requests post-delivery, and loyalty program updates. Combining transactional reliability with promotional engagement drives both conversions and customer satisfaction.
Reputable providers like SMS Gateway Hub operate with transparent pricing — mainly per-SMS charges based on route type and quantity. No hidden charges for delivery reports, dashboard access, or basic support.
Always verify pricing before purchasing — check for setup fees, platform fees, or mandatory minimum recharges some providers impose.
We accept online payment (credit/debit cards, UPI, net banking), bank transfer/NEFT/RTGS, digital wallets (Paytm, PhonePe, Google Pay), and for enterprise clients, invoice-based payments with credit terms.
All transactions are secure and generate instant GST invoices for your accounting records.
Yes. Messenger itself is free to use — you only need to purchase bulk SMS bundles to send messages. Platform maintenance, onboarding, and basic training are provided at no additional cost.
All listed prices are exclusive of tax. An additional 18% GST is applicable on every purchase as per government regulations.
Purchase SMS credit bundles of up to 1 million credits instantly online using a credit or debit card. For bulk purchases of 25,000+ credits, we can raise an invoice payable via bank transfer, cheque, or DD.
Purchase directly from the Inbox section in Messenger — click "Create a new inbox" and follow the on-screen steps.
No contracts required. You pay only for the SMS credits you need and for inbound numbers or inboxes for as long as you choose to use them.