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WhatsApp Business API

Singapore's WhatsApp Broadcast software. Empower customer communication with rule based automation. Send bulk messages through WhatsApp and manage WhatsApp messages easily with a reliable business profile using API technology.

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whatsapp business API features
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OFFICIAL whatsapp bSP

Drive customer engagement through WhatsApp Business solutions

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Send WhatsApp bulk messages quickly

Import your existing customer data and segment contacts using labels to send targeted promotional messages. Blast messages to thousand of users instantly, and personalize your content with variables that automatically insert customer details into the message.

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Multiple WhatsApp logins

Connect with customers via multiple agents and bots using the same WhatsApp Business number.

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Scan QR code to learn more about the official WhatsApp API

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Trusted by brands worldwide

SleekFlow is a great platform for CRM.

SleekFlow is very convenient and easy to use. It’s very useful especially if you need CRM.

Tak Fai

Customer Relationship Management Admin


Very easy to use and easy to organize

What I like best is how easy the format is and how visually pleasing the dashboard is. SleekFlow helps manage large amount of workflow.

Chase P



Lots of channels choices and great integration

Lots of channels can choose, such as WhatsApp, Facebook Messenger, WeChat, LINE, Live Chat, SMS, and Emails. Great integrating with eCommerce platforms and payment gateways

Eric C

Software Engineer


Seamless migration from other BSPs

Migrate your existing WhatsApp Business Account (WABA) to SleekFlow and maintain your verified status, display name, quality rating, messaging limits, and pre-approved message templates.

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Transparent pricing model

WhatsApp Business API charges businesses per 24-hour conversation, which includes all messages exchanged between a business and the customer. Rates vary depending on the category and region. Estimate your monthly charges using SleekFlow's calculator.

Calculate Your Cost
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Programmable API for software vendors

Connect your enterprise system to WhatsApp using SleekFlow’s programmable messaging API. Build a native experience with WhatsApp, such as sending OTPs and 2FA messages.

See Documentation
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Frequently Asked Questions

Automate your growth with SleekFlow

Get started for free and supercharge your customer engagement.