Keap vs Sellsy 2026

Sellsy wins this 3.4 to 2.8, and the gap starts before either product loads. Keap requires every new customer to pay a mandatory ~$500 onboarding package before first login. That is not optional and not refundable if you decide the platform is not for you. Sellsy has no mandatory fee: initial setup runs 2-3 hours to configure pipelines, custom fields and document templates, and basic invoicing is usable within a day.

Inside the product, Keap's campaign builder is powerful but complex. Reviewers consistently flag a learning curve of several weeks before feeling productive, a dated email editor with no undo button, and limited emoji support. Sellsy's interface is not cutting-edge either, and navigation between modules takes some adjustment, but the invoicing workflow and pipeline view land quickly for anyone familiar with professional SaaS tools. One G2 reviewer clocked it at about a week to feel comfortable.

The honest blemish on Sellsy: automated subscription invoices have been reported failing to send without visible error feedback. On Keap: the mobile app is restricted to US, Australia, Canada, UK, and New Zealand, so any non-English-speaking market immediately loses mobile access. That is a functional gap, not a UX preference.

Sellsy wins this 3.2 to 2.2, and the arithmetic is blunt. Two users on Keap annual: $2,988/year plus the mandatory ~$500 onboarding equals ~$3,488 in Year 1. The same two users on Sellsy Standard annual: 2 users x €49 x 12 = €1,176/year, no onboarding fee. Sellsy is roughly 57-63% cheaper in Year 1 at the minimum configuration.

Keap's pricing problem runs deeper than the entry number. A Trustpilot score of 1.3/5 from 480+ reviews documents recurring price hikes without feature improvements, unauthorized card upgrades, and customers describing cancellation as nearly impossible. One reviewer of 20 years left citing annual price increases and dismissive account reps. A $299 early termination fee on annual contracts adds another financial risk layer.

Sellsy's pricing model changed too: it migrated customers from monthly to annual billing over 2023-2025, and the sole 1-star G2 review explicitly cites this policy shift as a trust breach. That is a real transparency issue to flag. But Sellsy's community score (4.3/5) versus Keap's (3.1/5) tells the broader story: one platform's billing practices generate far more distrust than the other's.

Sellsy also includes PA-certified e-invoicing in all plans at no extra cost. For a French SMB that would otherwise pay a separate invoicing SaaS, that adds real value the sticker price does not show.

A clean tie at 4.2 each, because the tools cover different feature territory with similar depth scores. Keap's strengths are on the automation and marketing side: a visual campaign builder with conditional logic, lead scoring, multi-step nurture flows, AI Agents for SMS lead qualification (launched late 2025), AI Plays for automated workflow generation, send-time optimization, Keap Pay native payment processing, Google Reviews automation and recurring billing. For a US-market CRM that runs the full customer lifecycle from lead capture to invoice, that stack is genuinely hard to beat at the SMB level.

Keap's real weaknesses: documented automation bugs including duplicate email sends and segmentation exclusion failures, shared sending IPs with reported 5%+ bounce rates in some configurations, and no native helpdesk ticketing. These are not edge cases; multiple Capterra and Trustpilot reviewers hit them.

Sellsy's strengths are on the commercial operations side: PA-certified e-invoicing (all structured formats, all plans), 360-degree client database with 15+ configurable custom fields, electronic signature tested under 10 minutes with 5 clients, multi-pipeline tracking, Aircall telephony integration with click-to-call logging, and Tiime pre-accounting. Sellsy's weaknesses: marketing automation is basic compared to Keap, social media integrations are limited, and AI features are at an early, less-documented stage.

This is the most decisive gap in the comparison: Sellsy wins 4.1 to 2.5. Keap's stated support stack is extensive: 24/7 live chat, US phone, Keap Academy, community forums, dedicated CSM. The community evidence is the opposite of that promise. A Trustpilot score of 1.3/5 from 480+ reviews includes broken callbacks, account reps who interrupted customers and could not resolve billing disputes, debt collection referrals for subscriptions that could not be canceled, and at least one 20-year customer who left after a support interaction that turned adversarial.

Sellsy support was tested: 4-6 hours by email, under 10 minutes on live chat (Evolution and Elite plans), all in French with advisors who gave relevant solutions. Personalized onboarding is available on upper tiers. The Capterra dataset (67 reviews, updated June 3 2026) shows 78% positive sentiment, with support consistently praised even by reviewers who criticize other aspects of the tool.

The honest caveat on Sellsy: Standard plan customers get email support only, no phone and no live chat. For a small team on the entry tier, response time of 4-6 hours can feel slow when a configuration issue blocks a workflow. But 4-6 hours of relevant help beats 24/7 chat that, in practice, cannot stop an unauthorized charge.

Sellsy wins 3.9 to 3.5, and the reason is ecosystem fit rather than raw count. Keap's extensibility runs primarily through Zapier (5,000+ apps) with a thin native layer of around seven confirmed connectors: Stripe, QuickBooks, Calendly, Gmail, Google Calendar, Outlook, and Google Reviews. Keap's v2 REST API achieved full feature parity in November 2025 and a certified developer partner network handles custom builds, but the native marketplace is genuinely limited compared to any of its main competitors.

Sellsy ships 100+ integrations including Aircall (call logging and click-to-call directly from contact cards, tested with a 6-person team with immediate adoption), Tiime (pre-accounting bank synchronization), and Order Invoicer (Shopify, WooCommerce, PrestaShop orders become structured invoices automatically). Zapier and Make are also available. Sellsy's API requires technical skills for custom work, which is a real friction point for teams without a developer.

The market-fit dimension matters here: Keap's Zapier path is better suited to US marketing stacks, while Sellsy's native integrations map directly to French SMB workflows. For a Paris-based team that uses Aircall for telephony and Tiime for accounting, Sellsy's native connectors are not replaceable via Zapier with the same depth.