Is my phone number safe from bans?

Yes, by utilizing the official WhatsApp Business API with double opt-in consent, your number remains fully compliant.

Can I include rich media?

Yes, templates support high-quality images, PDFs, short videos, and call-to-action buttons.

What is the official WhatsApp Business API?

It is the official commercial interface engineered by Meta that enables companies to integrate WhatsApp into CRM, ERP, and customer support databases, allowing large-scale transactional alerts and chatbot automation.

How does the message template approval process work?

We submit message templates (structured notifications initiated by the company) directly through the Bulk SMS portal. Average Meta approval times range from 2 to 15 minutes.

How can my company secure the verified green badge on WhatsApp?

The green verified badge is awarded by Meta to notable brands after verification of their Meta Business Manager and official company credentials (CNPJ). We assist your team throughout this compliance process.

Can we transmit media files and PDFs via the WhatsApp API?

Yes. The official WhatsApp API supports sending and receiving rich media, including images (JPEG, PNG), PDFs (invoices, receipts), voice notes (audio), location coordinates, and video clips.

How does the human handoff (bailout) flow operate?

Our chatbot enables human handoff rules. If the NLP detects client frustration or if a complex query falls out of scope, the ticket routes immediately to a live agent in your CS desk, passing the complete transcript.

What is the opt-in policy required by WhatsApp?

Meta dictates that brands secure documented user consent (Opt-In) prior to initiating transactional or marketing alerts. Blasting unsolicited messages triggers immediate profile blocks.

What is the average latency and SLA of messages sent through the API?

Our dedicated high-scale gateway processes transactional alerts like Pix warnings and OTP codes in under 1.5 seconds, backed by a platform uptime SLA exceeding 99.99%.

Does the WhatsApp API support interactive buttons?

Yes. The API supports Meta's native interactive buttons, such as Quick Replies, Call-to-Action (open link or dial), and List Picker menus, dramatically boosting subscriber interaction rates.

WhatsApp Bulk Messaging Services

Why use WhatsApp Bulk Messaging?

WhatsApp is Brazil’s leading app. Compared to traditional email marketing, authorized WhatsApp API campaigns bypass spam filters to achieve immediate engagement.

We help you register, test, and broadcast pre-approved Meta message templates, preventing number bans and keeping compliance high.

Bulk WhatsApp Benchmarks

Average Read Rate:> 98%

Button Click Rate:18.4%

Throughput Speed:100 msgs/s

Bulk Messaging Capabilities

Approved Templates

Deploy verified utility and marketing templates safely.

Real-time Analytics

Track sent, delivered, read, and button click metrics instantly.

Audience Segmentation

Target specific user cohorts with structured custom fields.

Technical Integration

Step-by-Step Implementation

01

Number & Meta Account Setup

Link your business phone number to the Meta Business Manager console and secure carrier-verified profile status in few steps.

02

Message Template Registration

Create and submit utility, marketing, or authentication templates directly through our portal for quick automated Meta approvals.

03

Conversational Automation & Handoff

Deploy automated AI chatbot steps via webhooks, or route user chats to multi-agent human Zendesk panels.

Practical Use Cases

Industry-Specific Solutions

Banking & Fintech

Dynamic Pix QR and copy-paste invoice transfers, automated PDF monthly statements, multi-factor verification tokens, and secure verified chats.

Varejo & E-commerce

Cart abandonment recovery coupons, order tracking status, shipping alerts, and interactive product catalogs to boost mobile conversions.

Healthcare & Clinics

Medical appointment confirmations, dynamic booking systems, and secure end-to-end encrypted medical exam receipt deliveries.

Logistics & Shipping

Live driver location updates, customer-delivery driver chat channels, and automated shipping receipt issues.

Why Choose BulkSMS?

Carrier-Grade Local Telecommunications

Unlike legacy global aggregators that rely on unreliable third-party transit paths, BulkSMS owns carrier-grade direct pipelines with local network providers, keeping message latency low.

We host our physical core architecture in São Paulo datacenters. This keeps message compliance fully aligned with Brazilian data security standards (LGPD) for all audit needs.

Our engineering operations desk provides qualified support in Portuguese 24/7/365, giving your product and dev teams immediate developer-to-developer assistance.

Official BSP Partner

Direct authorized Meta API pipelines.

LGPD Sovereignty

São Paulo datacenters protecting user data.

24/7 Portuguese Support

Talk directly to local telecom developers.

99.9% Uptime SLA

Contractual uptime for critical transaction paths.

Real Customer Stories

What our customers say
about our services

"With the Official WhatsApp API, we automated 85% of our technical support tickets in a friendly conversational flow."

AF

Antônio Fagundes

São Paulo - SP

"We approved our message templates in minutes via the Bulk SMS dashboard. Swift and excellent workflow."

RD

Regina Duarte

São Paulo - SP

"The green verified badge brought immense credibility. The reported spam volume dropped to zero."

TR

Tony Ramos

Mato Grosso - MT

"Our e-commerce now automatically transmits order confirmations and tracking links via WhatsApp. Customers love it."

FM

Fernanda Montenegro

Rio de Janeiro - RJ

"Interactive quick-reply buttons increased our NPS survey engagement rates by 40%."

LR

Lázaro Ramos

Bahia - BA

"Excellent support for rich media, billing PDFs, and end-to-end encrypted transaction vouchers."

TA

Taís Araújo

Minas Gerais - MG

"The stability of Bulk SMS local servers in Brazil guaranteed real uptime above 99.99% for our core API."

RG

Reynaldo Gianecchini

Paraná - PR

"Seamless human handoff integration. When the AI bot cannot resolve, the ticket goes straight to our Zendesk agents."

GA

Giovanna Antonelli

Santa Catarina - SC

Resources & Insights

Bulk WhatsApp FAQ

99.9% SLA · 24/7 Support · LGPD Compliant

Launch Your First Broadcast

Reach your active clients directly on their phone screens with official API paths.

Contact Sales See Pricing

CPaaS Developer Hub

Operational Use Cases

Brazil Infrastructure

Bulk WhatsApp Messaging — Scale Your Communication