Customer.io vs ConvertKit: Email Marketing Comparison (2026)

An independent side-by-side comparison of Customer.io and ConvertKit for email marketing buyers — pricing, features, integrations, and how often each is cited by major AI engines.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask email marketing questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Too early to call — probes still building data.
ChatGPT
Customer.io
Tracking…
No data yet
ConvertKit
36 / 56 probes
64%
Excellent
Perplexity
Customer.io
0 / 1 probes
0%
Invisible
ConvertKitLeads
31 / 56 probes
55%
Excellent
Gemini
Customer.io
0 / 1 probes
0%
Invisible
ConvertKitLeads
34 / 57 probes
60%
Excellent
Claude
Customer.io
0 / 1 probes
0%
Invisible
ConvertKitLeads
81 / 591 probes
14%
Below average
Copilot
Customer.io
0 / 1 probes
0%
Invisible
ConvertKitLeads
207 / 236 probes
88%
Excellent
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

Customer.io
Starting price
Free tier
customer.io
ConvertKit
Starting price
$0/mo
Free tier
Yes
convertkit.com

Key Features

Customer.io

Feature data is being indexed.

ConvertKit
  • 1 basic Visual Automation
  • Unlimited landing pages & forms
  • Unlimited email broadcasts
  • Audience tagging & segmentation
  • Sell digital products & subscriptions
  • Unlimited Visual Automations
  • Survey subscribers with polls
  • A/B test subject lines

When to choose Customer.io

Choose Customer.io if your team prioritizes its strengths over ConvertKit's. Full guidance populates as Customer.io's feature data is indexed.

When to choose ConvertKit

Choose ConvertKit if your team prioritizes its strengths over Customer.io's. Full guidance populates as ConvertKit's feature data is indexed.

AI visibility profiles

Is one of these your brand?

Get the full report by email: every email marketing buyer question we ask, which engines name you, and who gets named instead.

Customer.io

customer.io

ConvertKit

convertkit.com

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We ask the buyer questions in this market across ChatGPT, Claude, Gemini, Perplexity and Copilot, and show you who gets named.

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