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Bulk SMS Service for HR & Recruitment in India

Run every message of the hiring and employee journey from one account: interview invites and reschedules, offer and onboarding alerts, candidate verification OTPs and consented job broadcasts, each on the right DLT category with pay-only-for-delivered SMS billing.

Interview invites (-S)Candidate OTP (-T)Offer & onboarding alertsSMS, WhatsApp & email
Start Free — 1,000 SMS CreditsSee Pricing
Pay As You GoPay only for delivered SMS
2-6 secTypical delivery time
99.9%Uptime SLA
8 channelsSMS, WhatsApp, email, voice & more

Quick Answer

Bulk SMS for HR and recruitment is the automated messaging a company sends across the hiring journey: interview invites and offer and onboarding alerts as service (-S) or transactional (-T) SMS, candidate verification codes as transactional (-T) OTP, and job-opening broadcasts as promotional (-P) SMS or WhatsApp marketing with consent. Each message maps to a DLT template. SMSGatewayHub runs SMS, WhatsApp, email and voice from one account on Pay As You Go pricing.

HR and recruitment messaging at a glance

Which channel and DLT category each hiring message belongs to. Alerts a candidate or employee expects because of a process they are in are service or transactional; broadcasting open roles to a cold list is promotional and needs consent.

MessageChannelCategory & suffixWhen to send
Candidate profile or portal verification OTPOTP SMS, WhatsApp authenticationTransactional -T; WhatsApp authentication templateInstantly when the candidate signs up or logs in
Application received acknowledgementService SMS, emailService -SRight after an application is submitted
Interview invite with date, time and venueService SMS, WhatsApp utility, emailService -S; WhatsApp utilityWhen an interview slot is scheduled
Interview reminder and rescheduleService SMS, WhatsApp utility, voice reminderService -SA day before, and whenever a slot changes
Offer letter and joining-date alertTransactional or service SMS, WhatsApp utility, emailTransactional -T / Service -SWhen the offer is released or the date is set
Onboarding and document-submission reminderService SMS, WhatsApp utility, emailService -SBefore the joining date, as documents fall due
Payroll, attendance and leave alerts for staffService SMS, emailService -SOn payroll runs and policy events
Open-role broadcast to a consented talent poolPromotional SMS, WhatsApp marketing, RCSPromotional -P with consentWithin the promotional time window, to opted-in candidates
Walk-in drive and job-fair invitesPromotional SMS, WhatsApp marketingPromotional -P with consentAhead of the event, to opted-in candidates
Candidate query and callback lineMissed call or toll-free number, WhatsApp chatCustomer-initiated; replies in the 24-hour window are billed per messageWhenever a candidate reaches out

Keep an interview invite or offer alert free of any job-promotion line to a cold list: a broadcast to people who did not apply or consent is -P. See how categories work on transactional SMS and service explicit vs service implicit SMS.

Every SMSGatewayHub product your HR and recruitment team can use

One account, one wallet and one set of DLT templates for the whole hiring and employee lifecycle.

Transactional & service SMS

Interview invites, offer and onboarding alerts and payroll updates that reach every candidate and employee, DND included. Transactional SMS

OTP SMS

Candidate portal, profile and e-sign verification codes on priority routes, with a voice OTP fallback. OTP SMS service

WhatsApp Business API

Utility interview and offer updates with Accept and Reschedule buttons, plus two-way chat for candidate questions. WhatsApp Business API

RCS Messaging

Branded, verified cards for walk-in drives and employer-brand campaigns in the native Android inbox, with SMS fallback. RCS messaging

Voice SMS & IVR

Pre-recorded interview reminder calls and an IVR line that routes candidates to the right recruiter. Cloud IVR

Missed call & toll-free

Give candidates a missed-call or toll-free number to request a callback or confirm attendance. Toll-free number

Bulk email

Offer letters, onboarding packs and employer newsletters from authenticated sending domains. Bulk email

Developer API & SMPP

Wire your ATS, HRMS or payroll system to send alerts and OTPs automatically. Developer API

What changed for HR and recruitment messaging

Four rule and platform changes every HR and staffing team in India should plan around now.

-T, -S and -P now visible to recipients

Operators add a suffix to every header, for example AB-ABCHRX-S. Interview and onboarding alerts to people in a process are -S, verification codes are -T, and cold job broadcasts are -P. Service explicit has been merged into promotional.

Typed variables and whitelisted links

Each value must be tagged {#numeric#}, {#alphanumeric#}, {#url#} and so on, and every application link, meeting link or callback number must be a whitelisted CTA on DLT. See converted templates

WhatsApp bills per delivered message

Meta charges per delivered message by category. Service replies and utility templates inside the 24-hour customer service window are billed per message too, and an interview update that adds a job pitch can be recategorised as marketing.

DPDP Rules on candidate data

The Digital Personal Data Protection Rules are notified and phasing in. Plan clear consent when you collect candidate numbers, purpose-limited use, and an easy way to withdraw from a talent pool.

Why SMSGatewayHub

Why HR and recruitment teams choose SMSGatewayHub over other providers

Hiring moves fast and a missed interview text costs a candidate. These are the things that decide whether alerts arrive, comply and stay affordable.

Pay only for delivered SMS

Drives and offer rounds send in bursts; you are billed for SMS that reach the handset, not every submission. Delivery-based billing

DLT templates done for you

Our team writes interview, offer and onboarding templates with typed variables, registers your meeting-link CTAs and maps the IDs. DLT priority support

Connects to your ATS and HRMS

Trigger alerts and OTPs from your ATS, HRMS or payroll software through the HTTP API and webhooks, no manual uploads.

Failover routing you can rely on

Multi-operator routing with automatic failover gives 2-6 second typical delivery and a 99.9% uptime SLA so interview alerts land on time.

SMS, WhatsApp, email, voice and RCS

Fall back from WhatsApp to SMS automatically and send in Hindi and regional languages from one wallet.

Certified, secure and trusted

ISO 27001, ISO 9001, SOC 2 and VAPT tested, which matters for candidate and employee data. Trust Center

Question to ask any providerSMSGatewayHub
Am I charged for undelivered interview alerts and OTPs?No. You pay only for delivered SMS.
Will you register my meeting links and callback numbers as CTAs?Yes. Our DLT team whitelists them and maps your templates.
Can it connect to my ATS or HRMS?Yes, through the HTTP API and webhooks. See the HTTP API
Do I get real operator delivery reports?Yes, live delivery reports in the panel and API. See delivery reports
Can I test before I buy?Yes, start with 1,000 free SMS credits. Create a free account

Moving from another provider? Compare on our MSG91 alternative page or estimate monthly spend with the SMS cost calculator.

Ready-to-register DLT templates for HR and recruitment

Copy, adjust the brand name and submit. Every changing value carries a typed tag, amounts go without commas, and every link must be a whitelisted CTA.

Message (what the candidate sees)DLT template (typed-variable format)Suffix
482913 is your OTP to verify your profile on ABC Careers. Valid for 10 minutes. Do not share it.{#numeric#} is your OTP to verify your profile on ABC Careers. Valid for {#numeric#} minutes. Do not share it.-T
Hi Rahul, your interview with ABC Tech is on 14 Oct at 11:00 AM. Details: https://abc.in/i/58213 - ABC HRHi {#alphanumeric#}, your interview with ABC Tech is on {#numeric#} {#alphanumeric#} at {#numeric#}:{#numeric#} {#alphanumeric#}. Details: {#url#} - ABC HR-S
Reminder: your ABC Tech interview is tomorrow at 11:00 AM. Reply to reschedule. - ABC HRReminder: your ABC Tech interview is tomorrow at {#numeric#}:{#numeric#} {#alphanumeric#}. Reply to reschedule. - ABC HR-S
Congratulations Rahul! Your offer from ABC Tech is ready. View and accept: https://abc.in/o/58213 - ABC HRCongratulations {#alphanumeric#}! Your offer from ABC Tech is ready. View and accept: {#url#} - ABC HR-T
Welcome to ABC Tech! Please submit your documents before 30 Oct. Upload: https://abc.in/d/58213 Help: 18001234567Welcome to ABC Tech! Please submit your documents before {#numeric#} {#alphanumeric#}. Upload: {#url#} Help: {#cbn#}-S
ABC Tech is hiring! Walk-in drive on 20 Oct, 10 AM to 4 PM. Register: https://abc.in/d/drive Reply STOP to opt outABC Tech is hiring! Walk-in drive on {#numeric#} {#alphanumeric#}, {#numeric#} AM to {#numeric#} PM. Register: {#url#} Reply STOP to opt out-P

More examples on DLT sample templates. Register templates under your brand with DLT registration and follow the template registration process.

HR and recruitment candidate journey on SMSGatewayHub

Map each stage of the hiring and employee lifecycle to the channel that fits it best.

  1. Apply and verify

    Verify candidate numbers with OTP SMS or a missed call OTP and acknowledge each application as a service message with consent captured for your talent pool.

  2. Shortlist and interview

    Send interview invites and reminders as -S SMS with a whitelisted meeting link, or as WhatsApp utility templates with Accept and Reschedule buttons.

  3. Reduce interview drop-offs

    Add a voice reminder call for candidates who have not confirmed, and offer a toll-free line to reconfirm or reschedule.

  4. Offer and onboarding

    Send the offer and joining-date alert on SMS and email, then onboarding and document reminders as -S messages before the joining date.

  5. Engage your talent pool

    Send consented open-role and walk-in-drive broadcasts on RCS, WhatsApp marketing or promotional SMS.

  6. Measure and refine

    Track every message in live delivery reports and compare channel cost and response on one dashboard.

HR and recruitment messaging resource map

Where to go next on SMSGatewayHub, grouped by what your team needs to do.

I want to…Go to
Check prices and estimate costAll pricing · WhatsApp pricing · SMS cost calculator
Get DLT-compliantDLT registration · Sample templates · Sender ID & suffixes
Connect my ATS or HRMSDeveloper API docs · HTTP API · SMPP connectivity
See it in actionAgency use cases · OTP SMS service · OTP API for startups
Fix delivery problemsDLT error codes · DLT SMS not delivered: fixes · Live delivery reports
Explore other industriesBanks & NBFCs · Education · Insurance · Hotels

SMS vs WhatsApp vs email for HR and recruitment: which to use when

Use SMS for anything time-critical that must arrive. Interview invites, reschedules, verification OTPs and offer alerts need to reach every candidate on any phone, including DND numbers. Transactional (-T) and service (-S) SMS do that around the clock with no app or data connection needed, which is why they remain the backbone of recruitment communication and the best defence against interview drop-offs.

Use WhatsApp for conversation and rich updates. Utility templates can carry a location pin, a meeting link or quick-reply buttons such as Accept or Reschedule, and candidates can reply with questions. Open-role broadcasts to a talent pool go as marketing templates to opted-in candidates only. See the WhatsApp Business API for how templates work.

Use email for documents and formal records. Offer letters, onboarding packs and policy documents belong in bulk email from an authenticated domain, with an SMS pointing to them. Most HR teams run all of it from one SMSGatewayHub account: SMS as the guaranteed layer, WhatsApp for conversation, email for documents, and RCS or promotional SMS for employer-brand drives. New to the rules? Start with the bulk SMS overview.

Related Services & Guides

OTP SMS Service →

Priority routes for candidate verification OTPs.

WhatsApp Business API →

Utility interview updates and marketing templates.

Bulk Email →

Offer letters and onboarding packs from one domain.

Bulk SMS for Banks & NBFCs →

Alerts and OTPs for financial back-office teams.

Transactional SMS →

-T and -S alerts that reach DND numbers.

DLT Sample Templates →

Templates in the typed-variable format.

Frequently Asked Questions

Use a service (-S) SMS for an interview invite, reminder or reschedule, because it updates a candidate who is already in your hiring process. Service SMS reaches DND numbers around the clock. SMSGatewayHub registers your interview templates as service messages and whitelists any meeting link as a CTA so they are not blocked.

Yes. Because an interview reminder is a service (-S) message to a candidate in an active process, it is delivered to all numbers, including DND, at any hour, as long as it carries no job-promotion or offer line. SMSGatewayHub keeps these templates offer-free so they retain 24/7 delivery.

When a candidate registers on your careers portal or e-signs a document, your system triggers an OTP SMS and asks them to enter it. Because it responds to the candidate's own action, it is a transactional (-T) message. SMSGatewayHub delivers OTPs on priority routes and can add a voice OTP fallback for candidates who do not receive the SMS.

Only with consent. A job-opening or walk-in-drive broadcast to a talent pool sells your roles, so it is promotional (-P): it goes to non-DND numbers or candidates who opted in, within the promotional time window and with an opt-out. SMSGatewayHub can send these as promotional SMS, WhatsApp marketing or RCS cards to consented candidates.

Yes. Interview invites, reminders and offer alerts go as WhatsApp utility templates, which can carry a meeting link and Accept or Reschedule buttons, and Meta bills them per delivered message. SMSGatewayHub provides the WhatsApp Business API and can fall back to SMS automatically if WhatsApp is not delivered.

An offer alert triggered when the candidate accepts or completes a step is often registered as transactional (-T), while a later joining-date or onboarding reminder is a service (-S) message. Both reach DND numbers. SMSGatewayHub's DLT team checks that each template sits in the right category before you send.

Yes. You can trigger interview, offer, onboarding and payroll alerts and candidate OTPs directly from your ATS, HRMS or payroll system through the SMSGatewayHub HTTP API, HTTPS API or SMPP, with webhooks for delivery status, so no one uploads lists by hand.

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, so see https://www.smsgatewayhub.com/pricing or talk to sales on 1800 102 1822, and test first with 1,000 free SMS credits.

Keep every candidate in the loop

Get 1,000 free SMS credits, free DLT guidance and ready-to-register recruitment templates. Go live on SMS, WhatsApp and email from one account.

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