Messaging & A2P SMS
Direct-to-operator A2P SMS, wholesale SMS termination, OTP delivery and rich channels - with delivery you can prove.
800+
Operator connections
< 3 s
Median OTP delivery
220+
Countries reachable
Messaging, delivered as one portfolio.
Dollu's messaging platform sits on direct and premium-grade SMPP/HTTP connections into mobile operators worldwide. We route each message on the connection that gives it the highest delivery probability for the destination, sender type and content class - not the cheapest.
For enterprises we offer registered sender IDs, templated transactional and OTP traffic, two-way messaging and rich channels including RCS and WhatsApp Business. For carriers and aggregators we offer wholesale SMS termination with hubbing, real-time DLRs and revenue-share models.
Every route is protected by our SMS firewall and monitored for grey-route leakage, spoofing and SIM-farm patterns, so your brand and your customers stay safe.
Everything in Messaging.
Each service has its own detailed page - overview, capabilities, onboarding, use cases, specifications and FAQs.
A2P SMS (Enterprise Messaging)
A2P SMS for OTPs, alerts and promotions over 800+ direct operator routes, with sender ID registration, DLT/10DLC compliance, SMPP/HTTP APIs and a campaign portal.
Wholesale SMS Termination
Wholesale SMS termination and hubbing for aggregators, carriers and OTTs: SMPP binds, per-country rate decks, verified DLR quality, route testing and high-TPS capacity.
International SMS
International SMS to 220+ countries over direct operator routes, with local sender ID rules applied, Unicode and concatenation support and per-country analytics.
OTP & Verification Messaging
High-priority OTP and verification messaging with sub-3-second delivery, failover to voice OTP and flash call, AIT/fraud protection and end-to-end conversion tracking.
RCS & WhatsApp Business Messaging
RCS Business Messaging and WhatsApp Business API on one platform: verified senders, template approvals, chatbots, rich media, MMS and automatic SMS fallback.
SMS Firewall & Messaging Security
SMS firewall and messaging security for operators and enterprises: grey-route, spoofing, smishing and SIM-farm/AIT detection, content filtering and A2P monetisation.
Promotional & Bulk SMS Campaigns
Bulk and promotional SMS to 200+ countries with a self-serve campaign portal, segmentation, scheduling, short links, click tracking and DLT/TCPA/GDPR consent controls.
Two-Way SMS & Conversational Messaging
Inbound and conversational SMS on virtual mobile numbers, long codes and short codes in 60+ countries, with keyword routing, webhooks, agent inbox, chatbots and surveys.
SMS Hubbing & Interconnection
SMS hubbing for MNOs and MVNOs: A2P and P2P interworking with 800+ operators over SS7/SIGTRAN or SMPP, with MNP resolution, revenue assurance and A2P monetisation.
What sets our messaging apart.
Direct operator routes
800+ direct and premium connections; sender ID and template pre-registration handled per country.
Delivery intelligence
Per-route conversion tracking, adaptive routing and real-time delivery receipts down to handset-level status.
Compliance & consent
DLT (India), 10DLC (US), TRAI/GDPR/TCPA controls, opt-out management and audit trails built in.
Fraud protection
SMS firewall, AIT (artificially inflated traffic) detection and velocity controls on every account.
Built for the sectors that depend on communications.
- Banking & Financial Services
Carrier-grade OTP messaging, secure contact-centre voice and private connectivity for banks, insurers, NBFCs and fintechs - built for regulated traffic, audited networks and zero tolerance for downtime.
- Contact Centres & BPO
CLI-guaranteed outbound termination, inbound toll-free and DIDs in 100+ countries and a CCaaS stack that scales from 20 seats to 20,000 - for operators who live by answer rates and cost per minute.
- Carriers, MNOs & MVNOs
Wholesale voice and SMS, bilateral interconnection, roaming and signalling, A2P monetisation and number hosting - from a carrier that operates 600+ direct interconnects and 800+ SMS operator connections.
- Healthcare & Life Sciences
Appointment reminders that cut no-shows, telehealth voice and video APIs, number masking that protects patient privacy and connectivity built for clinical uptime - with GDPR- and HIPAA-aligned controls.
- E-commerce & Retail
Order OTPs and shipping notifications at peak-season scale, WhatsApp and RCS engagement, delivery number masking, omnichannel support and store connectivity - one carrier across the whole customer journey.
- Travel, Hospitality & Logistics
Booking and gate-change alerts in any country, local numbers for every property and hub, IoT SIMs and fleet tracking across borders, and a contact centre that follows the sun.
- Media, Broadcast & Gaming
Contribution and distribution circuits for broadcasters, CDN and live-event connectivity, a low-latency 1.4 Tbps backbone, DDoS protection for game servers and voice and chat APIs for in-game communities.
- SaaS, ISVs & Startups
Voice, SMS, verify and video APIs on a carrier's own network, numbers in 110+ countries, white-label reselling and usage-based pricing - from your first sandbox call to your first hundred million.
Messaging - common questions.
The questions customers and carriers ask us most often before they interconnect. If yours is not here, our team answers within one business day.
Still have a question?
Ask our solutions teamOther service areas.
- Voice & Wholesale Carrier Services
Global A–Z voice termination, SIP trunking, carrier interconnects and voice-quality management over Dollu's own switching core, with direct routes to 600+ carriers.
- Global Numbers & DIDs
Virtual numbers, DIDs, toll-free, mobile and cloud calling numbers across 110+ countries with regulatory-compliant KYC, porting and inbound routing.
- Communication APIs (CPaaS)
Voice API, SMS API, Verify (OTP) API, Video/WebRTC API and Email API with SDKs, webhooks and carrier-grade delivery - build communications into any application.
- Unified Communications & Contact Centre
Cloud PBX, UCaaS, omnichannel CCaaS, Microsoft Teams Direct Routing/Operator Connect, IVR and conversational AI - delivered on Dollu's carrier network with global numbering.
- Network & Connectivity
Enterprise WAN and internet: MPLS/IP-VPN, dedicated internet access, SD-WAN, Ethernet private lines, managed WAN/LAN/Wi-Fi, cloud and data-centre connectivity, and private 5G.
- Cloud & Hosting
Cloud infrastructure, private and hybrid cloud, managed hosting, cloud migration, backup and disaster recovery, and edge/GPU compute - with private connectivity built in.
- Cyber Security
Network-integrated security: DDoS mitigation, managed next-gen firewall, SASE and Zero Trust access, managed detection and response, and security assessments.
- Mobile, Roaming & IoT
IoT connectivity with eSIM and multi-carrier SIMs, international roaming and steering, SS7/Diameter signalling services, and fleet & asset tracking solutions.
- Media & Content Delivery
Global video transmission for contribution and distribution, live-event and remote-production connectivity, and content delivery network services for OTT and gaming.
Talk to our messaging team.
Share your requirements - destinations, countries, sites, volumes - and we will come back with a design and commercial proposal within one business day.
