The email pricing dataset
Fifteen providers, every published plan, as CSV and JSON. Free to use with attribution. This is the same dataset every price on this site renders from.
No email address, no form, no signup. Free to use with attribution to letterduck.com.
What is in it
One row per published plan, across fifteen providers: Google Workspace, Microsoft 365, Zoho Mail, Mailchimp, Kit, beehiiv, Substack, MailerLite, Constant Contact, Klaviyo, Brevo, Buttondown, Ghost, SendGrid, and us.
| Column | What it holds |
|---|---|
provider, slug | The company, and the stable key we use for it |
plan | The plan name exactly as the vendor publishes it |
monthly_usd | Month-to-month price, empty where the plan is quote-only |
annual_monthly_usd | Effective monthly price on annual billing, empty where no annual discount exists |
limits | What the plan actually includes, in the vendor's own terms |
as_of | When we last checked the figure |
pricing_url | The page we read it from |
The JSON carries more: the computed cost at one, five and ten seats and at 500, 1,000, 5,000 and 10,000 subscribers, plus the honest wins and losses we record for each provider.
How it was built, and where it is weak
Every figure was transcribed by hand from the vendor's own pricing page, not from a comparison blog. Where a page renders its prices in JavaScript, we read the data the page itself loads, which is how the beehiiv, Kit, Ghost, Brevo and MailerLite figures were captured exactly.
The weaknesses are worth knowing before you rely on it. Constant Contact returns HTTP 403 to automated requests, so its tiers are cross-checked against independent sources rather than read from source. Mailchimp publishes tier prices only inside its own calculator, so the mid-tier figures are the least certain numbers in the file. Google geo-serves a different structure in Europe. Prices are US list prices in USD and exclude introductory promotions, because month thirteen is the price you live with.
One of the fifteen products is ours and is labelled every time it appears. There are no affiliate links anywhere on this site.
Using it
Cite it as "LetterDuck email pricing dataset" with the check date from the as_of column and a link to this page. If you find an error, the editorial standards page explains how we handle corrections, and the fastest route is to mail news@letterduck.com with the vendor and the figure.
If you would rather not download anything, the email cost calculator runs the same data in your browser, and every comparison page renders from it directly.