Klaviyo, Brevo or custom marketing automation: what to choose in 2026?
SaaS platforms like Klaviyo or Brevo are fast to launch but bill as you grow and keep your data. A custom approach (n8n/Make + WhatsApp) costs more to build but is yours and unlocks channels like WhatsApp, decisive in West Africa. Choose based on your volume, channels and need for control.
Klaviyo, Brevo or custom marketing automation: comparing costs, data ownership and the right choice for an SME in 2026.
Marketing automation is no longer reserved for large companies. The real question is no longer "should we automate?" but "with which tool?". On one side, turnkey SaaS platforms like Klaviyo or Brevo. On the other, a custom approach assembled with tools like n8n or Make. Here is how to decide without making a mistake.
SaaS platforms: fast but billed as you grow
Klaviyo and Brevo (formerly Sendinblue) are built to launch within hours: email templates, segmentation, pre-built flows, analytics. That is their strength. Their limit lies in the pricing model and data ownership.
- Growth-based pricing: Klaviyo charges by number of contacts (from around $45/month for 1,500 contacts, and the bill climbs fast beyond 10,000 contacts). The more you succeed, the more you pay.
- Your data lives with the vendor: segments, history, flows. Migrating elsewhere becomes expensive — that is deliberate lock-in.
- Channels limited to what the platform offers: mainly email and SMS. WhatsApp is often absent, partial or billed as an add-on.
Custom: more effort upfront, full ownership afterwards
Assembling your own stack with n8n (open-source, self-hostable) or Make lets you connect your store, CRM, emails and WhatsApp in fully controlled flows. The upfront investment is higher, but the recurring cost is marginal and the data stays with you.
- Low recurring cost: a self-hosted n8n server runs for a few tens of euros per month, regardless of the number of contacts.
- Data ownership: everything stays in your database — you can audit, export and cross-reference freely.
- Open channels: WhatsApp Business API, local SMS, transactional email, webhooks — anything you can connect via an API.
The WhatsApp argument for West Africa
Across much of French-speaking Africa, email has limited reach while WhatsApp is the default communication channel, with open rates far above email. Platforms designed for the North American or European market handle this channel poorly. A custom stack connected to the WhatsApp Business API lets you send order confirmations, cart reminders and support messages where your customers actually are.
How to choose in practice
- Low volume and a non-technical team? A SaaS platform (Brevo is often cheaper than Klaviyo to start) will save you time.
- Fast growth or a large contact base? The SaaS cost becomes penalising: a custom build pays off.
- WhatsApp central to your market (West Africa)? Custom is almost unavoidable.
- Need to cross-reference CRM + store + invoicing? Custom offers orchestration that closed platforms do not allow.
There is no universally wrong choice — there is a choice suited to your stage. Many SMEs start on a SaaS platform, then switch to a custom stack when the monthly bill exceeds the cost of a system they own.