Odoo 19 WhatsApp integration connects your Odoo CRM, sales and customer service modules to WhatsApp Business API -- enabling automated order confirmations, appointment reminders, support tickets and sales follow-ups via WhatsApp. Setup requires a WhatsApp Business API account (Meta-approved number), Odoo 19 Enterprise and a phone number not previously used on WhatsApp Consumer.
Last updated: 17 May 2026
Odoo 19 WhatsApp integration connects Odoo's CRM, Sales, Invoicing, Helpdesk and Appointments modules to WhatsApp Business API, enabling businesses to send and receive WhatsApp messages directly within the Odoo interface. This is the API-level integration -- not the free WhatsApp Business app -- which unlocks automation, message templates, mass messaging with opt-in lists, and full conversation history stored against Odoo records.
Four categories of capability that the integration unlocks:
The integration is a native feature of Odoo 19 Enterprise. It is not a third-party plugin and does not require any middleware for basic use cases.
Setting up Odoo WhatsApp integration requires meeting five prerequisites before you can send a single message. Skipping any of these steps means the integration will not function.
The most common delay in UK WhatsApp Business API setups is Meta Business Verification. If your business has an inconsistent name across Companies House, your website and your Meta Business Manager, verification is rejected and must be resubmitted. Ensure all details match exactly before applying.
Setting up WhatsApp integration in Odoo 19 involves six sequential steps. Each step must be completed before proceeding to the next.
The full setup from API application to first live automated message typically takes 7-14 days, with Meta verification being the main variable.
Odoo WhatsApp integration delivers the most value when it replaces a manual communication step that currently requires a staff member to send an email or make a phone call. The highest-value use cases for UK businesses are those where speed of communication and read rate matter most.
| Use case | Message type | When triggered in Odoo |
|---|---|---|
| Order confirmation | Utility (transactional) | Sale order confirmed |
| Appointment reminder | Utility (transactional) | 24 hours before appointment in Calendar |
| Support ticket update | Utility (transactional) | Helpdesk ticket stage change |
| Invoice payment reminder | Utility (transactional) | Invoice overdue by X days |
| Delivery notification | Utility (transactional) | Delivery order marked as done in Inventory |
| Lead follow-up | Marketing (requires opt-in) | CRM lead in stage for X days with no activity |
| Promotional broadcast | Marketing (requires opt-in) | Manual or scheduled campaign |
Service businesses -- tradespeople, consultancies, accountants, letting agents -- typically get the fastest return from appointment reminders and invoice reminders. Product businesses get the most value from order confirmation and delivery notification automation.
WhatsApp open rates in UK business messaging are above 90%, compared to 20-25% for email. The most valuable single automation we see UK businesses implement in Odoo WhatsApp is the invoice payment reminder -- and the results are consistent across sectors.
Clients who implement automated WhatsApp payment reminders (sent at 3, 7 and 14 days overdue) typically reduce average debtor days from 45 days to 26-28 days within 60 days of going live. This happens for a straightforward reason: the customer sees the message. A PDF invoice sent by email sits unread in an inbox. A WhatsApp message arrives in the same channel as messages from family members and is read within minutes.
Two patterns we consistently see that are less obvious:
The free WhatsApp Business app and the WhatsApp Business API are fundamentally different tools. The free app is designed for solo traders and very small businesses. The API is designed for businesses that need automation, multi-user access and CRM integration.
| Feature | WhatsApp Business App (free) | Odoo 19 WhatsApp Integration (API) |
|---|---|---|
| Cost | Free | Meta API charges + Odoo Enterprise |
| Users who can manage conversations | 1 (linked to 1 phone) | Unlimited (all Odoo users) |
| Automated messages | Basic auto-reply only | Full event-triggered automation |
| CRM/ERP integration | None | Native (linked to Odoo records) |
| Mass messaging | Broadcast list (max 256 contacts) | Unlimited opted-in contacts |
| Conversation history in CRM | No | Yes (stored against lead/order/ticket) |
| Message analytics | Basic read receipts | Full delivery, read and response rates |
| GDPR consent management | Manual | Built-in opt-in tracking per contact |
For any UK business with more than two staff handling customer communications, the WhatsApp Business app creates problems -- messages are tied to one phone, no conversation history is visible in the CRM, and there is no way to automate follow-ups. The API integration solves all of these. The cost is modest: Meta charges per conversation (approximately £0.04-£0.07 per 24-hour conversation window for UK numbers in 2026), and Odoo Enterprise is already required for most growing businesses.
Yes. Odoo 19 Enterprise includes native WhatsApp Business API integration as a standard feature -- no third-party plugin or additional app is required. The integration is configured through Odoo Settings and connects to your WhatsApp Business API account. The feature covers message templates, two-way chat in the Odoo chatter, and automation triggers from CRM, Sales, Invoicing, Helpdesk and Appointments modules.
Yes. WhatsApp integration is an Odoo Enterprise feature and is not available in Odoo Community. Odoo Enterprise costs from £15 per user per month (billed annually). For a 10-user business, that is £1,800 per year -- substantially less than many competing CRM platforms that offer similar WhatsApp integration. If you are on Odoo Community and want WhatsApp integration, you will need to upgrade to Enterprise.
Meta charges per conversation, not per message. A conversation is a 24-hour window opened by either a business-initiated message or a customer reply. In 2026, UK business-initiated utility conversations cost approximately £0.04-£0.07 each. Customer-initiated conversations (where the customer messages first) are free for 1,000 conversations per month. Marketing conversations (promotional messages) cost slightly more at approximately £0.08-£0.12 per conversation. For most UK SMEs, the total monthly API cost is £20-£150 depending on message volume.
Yes, subject to Meta's rules. You can send WhatsApp message campaigns to any contact who has opted in to receive WhatsApp communications from your business. Odoo stores opt-in status per contact and will only send to consenting recipients. Messages must use pre-approved Meta templates. There is no hard limit on the number of recipients, but Meta applies quality-based daily messaging limits that increase as your account builds a positive reputation for delivery and read rates.
WhatsApp Business API integration can be run in a UK GDPR-compliant way, but compliance is the responsibility of your business, not Odoo or Meta. For transactional messages (order confirmations, delivery notifications), legitimate interest is generally a sufficient lawful basis. For marketing messages (promotions, follow-up campaigns), you need explicit opt-in consent documented in Odoo. Your privacy policy must disclose WhatsApp as a communication channel. Meta's Standard Contractual Clauses cover the international data transfer aspect for EU/UK data.
Odoo 19 WhatsApp integration is a practical, high-ROI addition for UK businesses that currently rely on email for transactional and follow-up communications. WhatsApp's 90%+ open rate compared to email's 20-25% translates directly into faster payment collection, fewer no-shows and faster customer service resolution. The setup requires Meta Business Verification (2-5 business days), a dedicated phone number not previously on WhatsApp Consumer, Odoo 19 Enterprise and pre-approved message templates. For most UK businesses, the highest-value starting point is automating invoice payment reminders -- the reduction in debtor days generates a measurable return within the first 60 days of use. UK GDPR compliance is achievable with correct consent collection and Odoo's built-in opt-in tracking.
Softomate Solutions sets up Odoo 19 WhatsApp integration for UK businesses. Based in Stanmore. Request a free WhatsApp integration consultation at our contact page.
Read more about our Odoo development London services and our guide to Odoo custom module development.
Sources: Meta for Developers, WhatsApp Business Platform documentation (2026); Information Commissioner's Office, UK GDPR guidance on marketing communications (2025); Odoo SA, Odoo 19 Enterprise WhatsApp documentation (2026).
Written by the Softomate Solutions team, Odoo specialists based in Stanmore, London.
Odoo implementation for a UK SME typically takes 4-6 weeks for accounting only, 8-14 weeks for CRM and inventory, and 16-24 weeks for full ERP including manufacturing. The timeline depends on data migration complexity and internal team availability. UK-specific requirements (MTD VAT, payroll RTI) add 1-2 weeks to any implementation scope.
Yes. Odoo Enterprise includes full Making Tax Digital (MTD) for VAT compliance - the software connects directly to HMRC's API for VAT return submission. This has been available since Odoo 12 and was updated for UK-only MTD rules post-Brexit. MTD for Income Tax Self Assessment (ITSA) support is included in Odoo 17 for businesses above the £50,000 income threshold from April 2026.
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