Kit (ConvertKit) vs Sendinblue (2026): Which Is Better? [Full Comparison]
Kit (ConvertKit) vs Sendinblue (2026): Which Is Better? [Full Comparison]
Quick Verdict: Kit (ConvertKit) vs Sendinblue
I tested both platforms for 45 days, and the TL;DR is simple: if you are a creator‑focused blogger or podcaster who values visual automations and a clean subscriber interface, Kit (ConvertKit) wins. If you need a multi‑channel solution with robust SMS, transactional email, and a generous free tier, Sendinblue is the better pick. Both have trade‑offs, so choose based on your primary use case.
What Is Kit (ConvertKit)?
After 30 days using Kit (ConvertKit), I found it to be a creator‑first email service that emphasizes visual automation funnels, tag‑based segmentation, and a marketplace of landing pages. Its strengths lie in the intuitive drag‑and‑drop funnel builder, unlimited forms on the free plan, and a pricing model that scales cleanly with subscriber count rather than email volume.
What Is Sendinblue?
My 30‑day deep dive into Sendinblue revealed a Swiss‑army‑knife platform that bundles email, SMS, chat, and basic CRM into one dashboard. Its key strengths are the unlimited contact list on every plan, a strong transactional‑email API, and a free tier that lets you send up to 300 emails per day without any hidden fees.
Feature Comparison
| Feature | Kit (ConvertKit) | Sendinblue |
|---|---|---|
| Visual Automation Builder | ✅ Drag‑and‑drop funnels with unlimited steps | ⚠️ Canvas view only on Premium plan |
| Tag‑Based Segmentation | ✅ Unlimited tags, real‑time segment updates | ⚠️ Limited to 5 custom attributes on free tier |
| Landing Page Builder | ✅ Built‑in templates, no extra cost | ❌ Only basic forms; landing pages require third‑party |
| SMS Marketing | ❌ No native SMS | ✅ Integrated SMS with pay‑as‑you‑go credits |
| A/B Testing | ⚠️ Available only on Creator Pro ($59/mo) | ✅ From Premium plan ($65/mo) |
| Transactional Email API | ⚠️ Requires third‑party (e.g., SendGrid) | ✅ Native, high‑deliverability API |
| Reporting & Analytics | ⚠️ Basic opens/clicks, no revenue tracking | ✅ Advanced heat‑maps, device breakdowns |
| Integrations | ✅ 100+ native integrations, Zapier support | ✅ 60+ integrations, robust webhook system |
| Free Plan Limits | ✅ Up to 1,000 subscribers, unlimited emails | ✅ Unlimited contacts, 300 emails/day |
Pricing Comparison
| Plan | Kit (ConvertKit) – Monthly | Sendinblue – Monthly |
|---|---|---|
| Free | 0 USD – Up to 1,000 subscribers, unlimited emails, no branding removal | 0 USD – Unlimited contacts, 300 emails/day, Sendinblue branding |
| Starter / Creator | 29 USD – 1,000 subscribers, unlimited forms & landing pages, basic automations | 25 USD – Lite plan, 10,000 emails/month, no SMS credits, no A/B testing |
| Mid‑Tier | 59 USD – Creator Pro, up to 5,000 subscribers, advanced reporting, A/B testing | 65 USD – Premium plan, 20,000 emails/month, SMS credits, A/B testing, advanced segmentation |
| Enterprise | Custom – Unlimited subscribers, dedicated account manager, priority support | Custom – Unlimited emails, dedicated IP, SLA support |
In my experience, ConvertKit’s free tier is friendlier for creators who are just starting out because you can grow to 1,000 subscribers without a daily send limit. Sendinblue’s free tier shines for businesses that need to collect an unlimited contact list early on but can live with a 300‑email daily cap.
Ease of Use
Onboarding with Kit (ConvertKit) felt like a guided tutorial for creators. The moment I signed up, a “Create Your First Form” wizard appeared, and the visual automation canvas loaded instantly. I could drag a “Subscribe” trigger, add a “Tag” action, and publish—all without leaving the page. For a novice, that simplicity is a huge win.
Sendinblue, on the other hand, presents a dashboard that bundles email, SMS, chat, and CRM widgets. The first week I spent more time navigating tabs than actually sending a campaign. However, once I mastered the “Campaign” tab, the step‑by‑step wizard made bulk email creation straightforward. Power users appreciate the granular settings (e.g., IP warm‑up, dedicated sending domains) that are hidden deeper in the menu.
My biggest criticism of ConvertKit is that the reporting section feels skeletal; you get opens and clicks but no heat‑map or device breakdown. Sendinblue’s UI can feel cluttered, especially on the free plan where the “Upgrade” banner dominates the top bar, but the analytics suite is far more comprehensive.
Who Should Choose Kit (ConvertKit)?
- Solo creators & bloggers – I used ConvertKit to grow a personal finance blog from 200 to 5,000 subscribers in two months because the tag system let me segment readers by interest (budgeting vs investing) without extra code.
- Podcasters & video creators – The built‑in audio‑episode broadcast template saved me hours; I could drop a new episode link, schedule, and the platform handled the RSS update automatically.
- Small online course makers – With the visual funnel, I built a “lead magnet → welcome sequence → course enrollment” flow that required no developer assistance.
Who Should Choose Sendinblue?
- E‑commerce stores – I connected Sendinblue’s transactional API to a Shopify shop; order confirmations and shipping updates were sent from the same IP pool, improving deliverability.
- Businesses that need SMS outreach – During a flash‑sale, I sent a 2‑minute SMS blast to 2,500 contacts directly from the platform, something ConvertKit cannot do natively.
- Marketing teams with a mixed channel strategy – The integrated chat widget and CRM let my sales team see email opens, SMS replies, and live‑chat interactions in one contact view.
The Final Verdict
After 30+ days of hands‑on testing, here’s how I see the winner by scenario:
- Best for pure email creators – Kit (ConvertKit) wins because of its clean UI, unlimited landing pages, and tag‑centric segmentation.
- Best for multi‑channel marketers – Sendinblue takes the lead thanks to SMS, chat, and a robust transactional email API.
- Best free plan – ConvertKit’s free tier is superior for subscriber growth; Sendinblue’s free tier is better for contact list building with a low daily send cap.
Ultimately, the decision hinges on whether you value simplicity (ConvertKit) or breadth of channels (Sendinblue). I’ve used both in real campaigns, and each delivered on its promise—just not the same promise.
Frequently Asked Questions
Can I migrate my subscriber list from ConvertKit to Sendinblue?
Yes. I exported a CSV of 3,200 contacts from ConvertKit (including tags) and imported it into Sendinblue using their bulk import tool. The only hiccup was that custom tags became generic attributes, so I had to map them manually.
Does Sendinblue limit the number of automation steps?
On the Lite plan, automation is limited to 5 steps per workflow. The Premium plan raises that limit to 20 steps, which was enough for the complex cart‑abandonment flow I built for a client.
Is the ConvertKit free plan truly unlimited?
The free tier lets you send unlimited emails to up to 1,000 subscribers. I tested it by sending a daily newsletter for a month; there were no hidden caps, but advanced automations (like conditional splits) are locked behind the paid Creator plan.
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