The verdict in three sentences
A native or iPaaS connector (Zapier, Make, Workato) sets up in a few days for €20-800/month and covers standard flows at moderate volume. A custom API integration (€8,000-25,000) becomes necessary once you handle 300-1,200 contacts/day, complex business rules or real-time two-way sync. Either way, the goal is the same: remove up to 90% of double data entry between CRM, ERP and billing.
Native vs iPaaS vs custom
Native links two tools that already know each other; iPaaS orchestrates flows through a visual platform; custom codes your exact rules.
| Criterion | Native connector | iPaaS (Zapier/Make/Workato) | Custom API |
|---|---|---|---|
| Upfront cost | €0-1,500 | €500-3,000 (setup) | €8,000-25,000 |
| Monthly cost | €0-90 | €20-800 | €350-700 (support) |
| Volume/day | Low | Medium (up to ~1,000) | High (>1,200) |
| Real-time two-way | Rare | Partial | Yes |
| Complex business rules | No | Limited | Full |
| Setup time | 1-3 days | 1-2 weeks | 4-8 weeks |
CRM licences and per-user cost
The CRM cost itself weighs on the decision. 2026 orders of magnitude for professional editions.
| Item | HubSpot | Salesforce |
|---|---|---|
| Pro edition | ~€90/user/month | ~€150/user/month |
| API included | Yes (quotas) | Yes (quotas) |
| Native connector cost | €0-50/month | €0-90/month |
| Integrator day rate | €550-750 | €600-850 |
Reducing double data entry
Two-way lead/order sync removes manual re-keying. 2026 estimates.
| Synced flow | Before | After (estimate) |
|---|---|---|
| Website leads → CRM | Manual entry | Automatic, real time |
| CRM orders → ERP | Re-keying | -90% double entry |
| ERP invoices → CRM | Manual import | Auto sync |
| Contacts handled/day | 300-1,200 | 300-1,200 effortless |
Mini case study
Thomas, marketing director of a B2B software vendor in Singapore, runs HubSpot Pro (18 users ≈ €1,620/month) and loses 15 h/week to double entry between HubSpot, the ERP and billing. An iPaaS at €300/month covers 60% of flows; he ultimately chooses a custom API integration at €16,000 + €500/month support to sync 900 contacts/day two-way. Gain: 13 h/week recovered (≈ €2,300/month loaded cost), payback in under 8 months.
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FAQ
iPaaS or custom: how to decide?
iPaaS fits under ~1,000 contacts/day with standard flows; above that, or for complex business rules and real-time two-way sync, custom is more reliable and cheaper at scale.
How much does a connector cost in 2026?
From €20 to €800/month on iPaaS depending on volume, or €8,000-25,000 one-off for custom, plus €350-700/month maintenance.
How much double-entry reduction can I expect?
Up to 90% across lead/order/invoice flows, freeing several hours per week per team.
Is HubSpot or Salesforce more expensive to integrate?
Salesforce is often slightly costlier (higher day rates and licences), but both expose full APIs; the gap depends mostly on your flow complexity.
Must I rebuild the integration on every CRM update?
No, if it uses official APIs: €350-700/month support is enough to track changes and fix incidents.
Let's scope your project. Give us your tools (Salesforce/HubSpot, ERP, billing), your contacts/day volume and the flows to sync: we quote native, iPaaS and custom. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
