How many companies use Constant Contact vs ConvertKit?

43,920 companies use Constant Contact and 4,548 companies use ConvertKit in our database. Constant Contact is more widely adopted with 9.7x more companies than ConvertKit.

Can I get a list of companies using both Constant Contact and ConvertKit?

Yes. AgentData tracks companies using both tools. Sign up free to access the full list with emails, tech stacks, and contacts via CSV or API.

Constant Contact vs ConvertKit

Constant Contact is used by 43,920companies — 9.7x more than ConvertKit (4,548).

43,920 use Constant Contact4,548 use ConvertKit

Side-by-side comparison

	Constant Contact	ConvertKit
Companies	43,920	4,548
Category	Marketing automation	Marketing automation

Company adoption

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48,468 companies with emails, tech stacks, and contacts

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