Services
Digital messaging solutions on every channel your customers answer.
Unique Digital Outreach (UDO) provides digital messaging solutions on four channels — WhatsApp Business API, RCS, bulk SMS and outbound voice — run on one communication infrastructure layer, with OTP, transactional messaging and CRM integrations built on them. Alongside, we run SEO, social media, performance marketing and website development.
Official Meta Tech Provider · 600M+ messages delivered · Trusted by 1,000+ Businesses Worldwide
Messaging channels
Which digital messaging solutions does UDO provide?
UDO provides four digital messaging solutions: WhatsApp Business API, RCS messaging, bulk SMS and outbound voice, all run from one platform and one API. Each reaches a different customer in a different moment, and you can run two or more together, with fallback between them.
WhatsApp Business API
A verified, two-way channel for order updates, support, win-backs and campaigns, wired into the systems your teams already use. UDO is an Official Meta Tech Provider.
- Shared team inbox and a no-code chatbot builder
- Catalogues, carousels and interactive buttons
- Marketing, utility and authentication templates
RCS messaging
Branded rich cards, carousels and tap-to-action buttons in the phone's own messaging app, under your verified logo and name. Nothing for the customer to download.
- Reaches about 95% of Android handsets in India via Google Messages
- Supported on iPhone from iOS 18
- Automatic SMS fallback for handsets without RCS
Bulk SMS
The channel that reaches every handset, with or without mobile data. Promotional and transactional routes, with every sender header and template DLT-registered.
- Promotional SMS to non-DND numbers, 10 AM–9 PM
- Transactional and OTP SMS at any hour, DND numbers included
- Regional languages in Unicode, at 70 characters per SMS
Outbound voice & bulk voice calls
Automated outbound calls for the customers no message reaches: announcements, reminders and voice OTP, on any phone with no internet needed.
- Bulk pre-recorded voice campaigns
- Automated IVR flows on outbound calls
- Billed per pulse, not per minute
Solutions
The jobs the channels do for you.
OTP, transactional and promotional messaging, CRM integrations, a developer API and a click-to-chat tool, all running on the same four channels.
OTP & authentication
Sign-up, login and payment codes over SMS, WhatsApp and voice, on DLT-registered transactional routes that reach DND numbers.
Transactional messages
Order, payment and account updates fired by your own systems, at any hour, to every number.
Promotional messages
Offers and launches across RCS, WhatsApp and SMS, to opted-in audiences and, for SMS, to non-DND numbers inside the permitted hours.
CRM integrations
Salesforce, HubSpot, Zoho, Freshdesk, CleverTap and MoEngage, or any custom system via the REST API.
Developer API
A REST API for SMS, OTP, WhatsApp and RCS, with webhooks for delivery status and the messages customers send back.
WhatsApp QR & link generator
A click-to-chat link or QR code for packaging, ads and storefronts, made in the browser.
Why one layer
Reach is bought once. Retention is earned in every message after.
Running every channel on one layer means each customer hears from you on the channel they actually answer.
Fallback, not four campaigns
A message that cannot land on WhatsApp or RCS drops to SMS automatically, so one send reaches everyone.
Infrastructure, not a middleman
Direct operator connectivity and automatic rerouting when a route degrades, across 600M+ messages delivered.
A named account manager
One person who knows your templates, routes and sending patterns across every channel.
Marketing services
The demand side, run by the same team.
For brands that want acquisition and retention under one roof: search, social, paid media and the website they all land on.
SEO
Technical audits, keyword research matched to buyer intent, content and local SEO, with monthly reporting.
Social media marketing
Content calendars, platform-native creative and community management across Instagram, Facebook, LinkedIn, X and YouTube.
Performance marketing
Google Ads and Meta Ads campaigns — search, Performance Max, YouTube, retargeting and lead generation — run against your business goals.
Website development
WordPress business websites, landing pages and redesigns, built mobile-first with on-page SEO in place.
Choosing a channel
Which channel should you use for which message?
Use SMS for codes and alerts that must reach every phone, WhatsApp for conversations, RCS for rich offers in the native inbox, and voice for customers no text reaches.
| Message | Channel | Why |
|---|---|---|
| OTP and login codes | SMS, with voice fallback | The transactional route reaches DND numbers at any hour, and a call reads the code if the text cannot land. |
| Order and delivery updates | WhatsApp or RCS, with SMS fallback | A status card with a tracking button, and plain text for handsets that receive neither. |
| Offers and launches | RCS and WhatsApp | Images, carousels and buttons for opted-in audiences. |
| Support conversations | Two-way threads in a shared inbox, with chatbot handover to an agent. | |
| Reminders for customers without data | Voice | An automated call works on any phone, with no internet needed. |
Questions
Frequently asked.
Unique Digital Outreach (UDO) is a communication infrastructure company: it carries WhatsApp Business API, RCS, bulk SMS and outbound voice traffic for businesses, and runs digital marketing services alongside.
More than 1,000 businesses use it, and it has delivered 600M+ messages. More about UDO.
Yes. UDO sends bulk SMS on DLT-registered promotional and transactional routes, and runs automated outbound voice campaigns: pre-recorded announcements and reminders, automated IVR flows on outbound calls, and voice OTP, billed per pulse.
Calls reach any phone, with no internet needed. How the voice dialer works.
Yes. WhatsApp, RCS, SMS and voice run from one platform and one API, so a message can fall back from a rich channel to SMS when a handset cannot receive it.
Yes. UDO is an Official Meta Tech Provider, with direct access to the WhatsApp Business Platform.
Messaging is billed per delivered message, with no account opening fee and no subscription. Voice is billed per pulse.
Every channel's rates are on the pricing page. For marketing services, tell us the scope you have in mind.
Yes. Salesforce, HubSpot, Zoho and Freshdesk are supported, CleverTap and MoEngage have documented setup guides, and any other system connects through the REST API.
Tell us what you send, and to whom.
Share your channels, volumes and the systems you work in. We'll show you how it runs on UDO, and which channel fits each message.