Bulk SMS, WhatsApp and Voice Messaging for Hospitals and Clinics in India

Confirm appointments, cut OPD queues, share report-ready links, send billing receipts and follow up after discharge from one account, with the right -T, -S or -P header on every SMS and WhatsApp or voice fallback for patients who miss a text.

-S patient reminders, 24/7Whitelisted report linksWhatsApp & voice fallbackISO 27001 & SOC 2

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24/7-S reminders incl. DND numbers

2-6 secTypical SMS delivery time

99.9%Uptime SLA

Since 2009Serving Indian businesses

Quick Answer

Bulk SMS for hospitals is automated patient messaging for appointment confirmations, OPD token updates, report-ready links, bill receipts and discharge follow-ups. In India, reminders to existing patients go as service SMS with a -S header and reach DND numbers 24/7, while OTPs and payment receipts use -T. SMSGatewayHub connects your HIS to SMS, WhatsApp, RCS, voice and email, with a 99.9% uptime SLA and Pay As You Go pricing.

Hospital messaging at a glance

Every patient touchpoint mapped to the right channel and DLT category. Pick the category before you register the template; operators add the suffix to your header, for example VM-CITYHS-S.

Message	Channel	Category & suffix	When to send
Patient portal or teleconsult login OTP	OTP SMS, WhatsApp authentication template	Transactional -T	Instantly, when the patient requests it
Appointment booked or rescheduled	SMS + WhatsApp utility template	Service -S	Right after the booking is saved in the HIS
Appointment reminder	SMS, with voice SMS for elderly patients	Service -S	The day before and on the morning of the visit
OPD token and queue update	SMS	Service -S	On registration and as the queue moves
Bill payment receipt	SMS + email with the invoice	Transactional -T	Within 30 minutes of the payment
Lab or radiology report ready	SMS with whitelisted link, WhatsApp utility template	Service -S	When the report is released, without test names or results in the text
Insurance pre-authorisation or claim status	SMS + email	Service -S	At each TPA or insurer update
Discharge instructions and follow-up visit	WhatsApp utility template, SMS, voice call	Service -S	At discharge and before the review date
Health check-up packages and camps	Promotional SMS, WhatsApp marketing, RCS rich card	Promotional -P	Only to consenting or non-DND numbers, within the promotional time window, with an opt-out
Staff on-call and emergency broadcast	SMS + voice call	Service -S	Immediately, to registered staff numbers

Adding a discount or package offer to a reminder turns it into promotional SMS. Keep offers in separate -P templates. For the full product overview see healthcare SMS solutions; for end-to-end workflow scenarios see the healthcare case study.

Every SMSGatewayHub product your hospital can use

One account, one wallet and one API for every patient and staff channel.

Transactional & service SMS

Appointment confirmations, OPD tokens, report-ready alerts and receipts on -T and -S headers that reach DND numbers around the clock. Transactional SMS

OTP SMS

WhatsApp Business API

Booking confirmations, discharge notes and follow-up reminders as utility templates, plus a shared inbox for patient queries. WhatsApp Business API

RCS Messaging

Verified hospital branding with buttons to book, call or get directions in the native Android messages app. RCS messaging

Voice SMS & IVR

Recorded reminders in the patient's language for those who do not read texts, and IVR menus for appointment desks. Voice SMS · Cloud IVR

Missed call & toll-free

Let patients request a callback or confirm a visit with a missed call, and run a 1800 helpline for appointments. Missed call service · Toll-free number

Bulk Email

Itemised invoices, insurance documents and health newsletters to patients and corporate clients. Bulk email

Developer API & SMPP

Trigger every message from your HIS, LIS or clinic software through HTTP API, webhooks or SMPP. Developer API · SMPP API

What changed for hospital messaging

Four rule changes that now decide whether a patient message is delivered, labelled correctly and handled lawfully.

Header suffixes show the message type

Operators now append -T, -S, -P or -G to every SMS header. Reminders and report alerts to registered patients belong under -S; register them there or patients will see them labelled as promotional.

Typed variables and whitelisted links

New DLT templates tag each value as {#numeric#}, {#alphanumeric#}, {#url#}, {#urlott#}, {#cbn#} or {#email#}. Report links and helpline numbers must be registered CTAs. See the DLT sample templates.

Service explicit merged into promotional

Health camp invites, check-up packages and pharmacy offers now travel as -P promotional: consent or non-DND numbers only, the promotional time window, and an opt-out in every message.

DPDP Rules now notified

The Digital Personal Data Protection Rules are in force with a phased compliance period. Hospitals need clear consent notices, purpose-limited use of patient contact data and prompt breach intimation. Keep diagnoses out of message text.

Why SMSGatewayHub

Why hospitals and clinics choose SMSGatewayHub over other providers

Patient messaging needs reliable delivery, careful data handling and a team that understands DLT. Here is what you get.

Certified security for patient data

ISO 27001, ISO 9001:2015, SOC 2 and VAPT tested, so your compliance team can review us before go-live. Trust Center

Pay only for delivered SMS

Reminders to switched-off phones are not billed. How delivery-based billing works

DLT templates registered for you

Our team drafts -S and -T hospital templates with typed variables and registers report links and helpline numbers as CTAs. DLT priority support

Fallback across channels

If an SMS is not delivered, retry on WhatsApp or a voice call so critical reminders still reach the patient.

Hindi and regional languages

Send reminders and voice messages in the language your patients read and speak. Unicode regional SMS

Trusted since 2009

10,000+ registered businesses, 2,000+ enterprise clients, a 99.9% uptime SLA and 24/7 support on 1800 102 1822.

Question to ask any provider	SMSGatewayHub
Which security certifications do you hold?	ISO 27001, ISO 9001:2015, SOC 2 and VAPT tested.
Will you register our -S reminder and report templates?	Yes, our DLT team drafts, registers and maps them, including URL and callback CTAs.
Am I billed for undelivered reminders?	No. You pay only for delivered SMS.
Can a failed SMS fall back to WhatsApp or voice?	Yes, from the same account and API.
Do we get real operator delivery reports?	Yes, live reports in the panel and by API. Live delivery reports
Can we test before committing?	Yes, with 1,000 free SMS credits. Create a free account

Security questionnaire from your IT team? Start at the secure messaging provider page and our ISO certifications.

Ready-to-register DLT templates for hospitals

Copy these patterns into your DLT portal. Amounts go without commas so they pass {#numeric#}; every link and phone number must be a whitelisted CTA. Never place a diagnosis or test result in the text.

Message (what the patient sees)	DLT template (typed-variable format)	Suffix
Your appointment with Dr. Mehta at City Hospital is confirmed for 14 Oct, 11:00 AM. Token OPD24. - City Hospital	Your appointment with Dr. {#alphanumeric#} at City Hospital is confirmed for {#numeric#} {#alphanumeric#}, {#numeric#}:{#numeric#} {#alphanumeric#}. Token {#alphanumeric#}. - City Hospital	-S
Reminder: your visit with Dr. Rao is tomorrow at 10:30 AM. To reschedule call 18001234567 - City Hospital	Reminder: your visit with Dr. {#alphanumeric#} is tomorrow at {#numeric#}:{#numeric#} {#alphanumeric#}. To reschedule call {#cbn#} - City Hospital	-S
Dear Asha, your report for sample LAB58213 is ready. View securely: https://cityhosp.in/r/58213 - City Hospital	Dear {#alphanumeric#}, your report for sample {#alphanumeric#} is ready. View securely: {#url#} - City Hospital	-S
482913 is your OTP to view reports on the City Hospital patient portal. Valid for 10 minutes. Do not share it. - City Hospital	{#numeric#} is your OTP to view reports on the City Hospital patient portal. Valid for {#numeric#} minutes. Do not share it. - City Hospital	-T
Payment of Rs.1850 received for bill BIL40721. Receipt sent to asha@example.com - City Hospital	Payment of Rs.{#numeric#} received for bill {#alphanumeric#}. Receipt sent to {#email#} - City Hospital	-T
Full body check-up packages now at City Hospital, Sunday camps on 20 Oct. Book: https://cityhosp.in/camp - City Hospital	Full body check-up packages now at City Hospital, Sunday camps on {#numeric#} {#alphanumeric#}. Book: {#url#} - City Hospital	-P

Promotional templates must also carry the opt-out your operator specifies. More patterns on sample templates and the DLT template registration process.

Patient journey on SMSGatewayHub

Discover
Invite consenting patients to check-ups and camps by promotional SMS, WhatsApp marketing or an RCS rich card with a Book button.
Book
Take bookings on a toll-free number, IVR or missed call, verify the mobile with an OTP and confirm on SMS and WhatsApp (-S).
Visit
Send reminders the day before, then OPD token and queue updates on arrival. Use voice SMS for patients who prefer a call.
Diagnose and pay
Share report-ready alerts with a whitelisted link, payment receipts on -T, and invoices or insurance papers by email.
Discharge and follow up
Send discharge instructions and review-visit reminders on WhatsApp, with SMS or voice fallback for patients without a smartphone.
Feedback and care
Collect feedback over two-way SMS and invite patients back for preventive care once they have opted in.

Hospital messaging resource map

Everything a hospital or clinic needs on SMSGatewayHub, grouped by what you want to do next.

I want to…	Go to
Check prices and estimate cost	All pricing · Transactional SMS pricing · WhatsApp pricing · SMS cost calculator
Get DLT-compliant	DLT registration · Sample templates · Sender ID & suffixes · Service explicit vs implicit
Connect our HIS or clinic software	Developer API docs · HTTP API · SMPP API
See healthcare workflows	Healthcare SMS solutions · Healthcare case study · Patient communication with SMS and OTP
Fix delivery problems	DLT error codes · Live delivery reports
Explore other industries	Banks & NBFCs · E-commerce · Education · Logistics

SMS vs WhatsApp vs RCS vs voice for hospitals: which to use when

Use SMS as the backbone for anything time-critical: OTPs, appointment confirmations, OPD tokens and report-ready alerts. It works on every phone, needs no app and, on -T or -S headers, reaches DND numbers at any hour. Use the WhatsApp Business API when the message benefits from a conversation or a document, such as discharge instructions or a follow-up the patient may want to reply to; Meta bills per delivered message, including service replies and utility templates inside the 24-hour window.

Choose RCS for branded, verified campaigns with Book, Call and Directions buttons, with SMS fallback for phones that do not support it. Use voice SMS for elderly or low-literacy patients and for urgent staff broadcasts. Most hospitals run all four from one SMSGatewayHub account; read RCS messaging for healthcare and service implicit vs explicit under the latest DLT rules before you plan templates.

Related Services & Guides

Healthcare SMS Solutions →

Overview of healthcare SMS products and alerts.

Healthcare Case Study →

Step-by-step hospital, lab and clinic workflows.

Transactional SMS →

-T and -S alerts delivered 24/7 incl. DND.

WhatsApp Business API →

Utility templates and a shared patient inbox.

Voice SMS →

Recorded reminders in any language.

Bulk SMS for Education →

Parent alerts and fee reminders for schools.

Frequently Asked Questions

Can hospitals send appointment reminders to DND numbers?

Yes. Appointment confirmations and reminders to registered patients are service messages under the -S header, which reach DND numbers 24/7. They must use a DLT-registered service template and contain no offers. SMSGatewayHub registers these templates for you and sends them through the API or panel.

Which DLT category should a hospital use for lab report alerts?

Report-ready alerts to existing patients are service (-S) messages. Include only the patient name, a sample or bill reference and a whitelisted {#url#} link, never the test name or result. SMSGatewayHub registers the link as a CTA so the message passes DLT scrubbing.

Is it safe to send lab reports by SMS or WhatsApp?

Send a notification, not the report itself. The SMS or WhatsApp message should point to a secure portal that asks for an OTP or login before showing the report. SMSGatewayHub is ISO 27001, SOC 2 and VAPT tested, and its OTP SMS can protect the report download.

Can a hospital promote health check-up packages by SMS?

Yes, but only as promotional SMS with a -P header. It goes to non-DND numbers or patients who gave consent, within the promotional time window, and every message must carry an opt-out. Since service explicit was merged into promotional, there is no longer a service route for offers.

How does the DPDP Act affect hospital patient messaging?

Under the DPDP Act and the now-notified DPDP Rules, a hospital must give a clear consent notice, use a patient's number only for the stated purpose and report personal data breaches promptly. In practice, keep diagnoses out of message text and honour opt-outs. SMSGatewayHub supports this with certified security and purpose-specific templates.

Should a hospital use WhatsApp or SMS for patient reminders?

Use both. SMS reaches every phone and DND number on a -S header, while WhatsApp utility templates suit richer messages such as discharge notes and allow replies. SMSGatewayHub can send on WhatsApp first and fall back to SMS or a voice call automatically.

Can SMSGatewayHub integrate with our HIS or clinic software?

Yes. Any hospital information system, LIS or clinic app can trigger messages through the SMSGatewayHub HTTP API, webhooks or SMPP, with sample code in PHP, Python, Node.js, Java and .NET. Delivery reports flow back in real time so you can retry on WhatsApp or voice.

What does hospital SMS cost with SMSGatewayHub?

SMSGatewayHub uses Pay As You Go pricing: you buy credits as needed and pay only for delivered SMS; exact rates depend on volume and route, see https://www.smsgatewayhub.com/pricing or talk to sales on 1800 102 1822. WhatsApp is billed per delivered template by Meta category.

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