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Cheapest email marketing for 25,000 subscribers

Ranked by verified monthly price on the plan each tool page tracks. 2 tools still free at this size. Blank and contact-sales cells sort last and never invent a number.

Short answer. At 25,000 contacts, Brevo can still be $0 on the free plan we cite. Confirm live before buying.
All tools

Monthly cost at 25,000 contacts

# Tool Plan tracked Monthly Free covers? Note Visit
1 Brevo Starter $0 Yes Multi-channel (email/SMS); free plan is send-capped not contact-capped Visit
2 Substack Revenue-share $0 Yes Writer platform; 10% of paid sub revenue, no monthly ESP fee Visit
3 EmailOctopus Pro $94.50 No Budget ESP; free to 2,500 Visit
4 Systeme.io Startup $97 No Funnels + email + courses; strong free plan Visit
5 Sender Standard $149 No Budget ESP with generous free forever plan Visit
6 Moosend Pro $160 — Budget automation ESP; trial not free forever Visit
7 Flodesk Lite $162 No Design-first email; flat-ish pricing that now scales with list Visit
8 Ghost cheapest (Starter≤1k else Publisher) $169 — Open-source publishing + newsletters; hosted from $50/mo Visit
9 GetResponse Starter $174 — Email + funnels + webinars Visit
10 MailerLite Comfort $179 No Full-featured email + sites; Comfort is the value paid plan Visit
11 beehiiv Lite $199 No Newsletter platform with monetization, website, and ad network Visit
12 Kit Creator $199 No Creator email OS (formerly ConvertKit) — generous free broadcasts Visit
13 AWeber Lite $210 No Long-running small-business ESP Visit
14 Mailchimp Essentials $270 No Well-known ESP; free plan now very limited Visit
15 Constant Contact Lite $280 — SMB email + marketing toolkit Visit
16 Omnisend Standard $282 No Ecommerce email + SMS Visit
17 Drip Email $369 — Ecommerce CRM email Visit
18 Klaviyo Email $400 No Ecommerce CRM email/SMS; expensive per profile at scale Visit
19 HubSpot Marketing Hub Starter Contact sales No CRM suite; Marketing Hub email is seat + contact pack priced Visit
20 ActiveCampaign Starter See vendor — Deep marketing automation + CRM; no free plan Visit

How to read this table

Prices are monthly list prices on the plan named in each tool’s ListCost page (for example Mailchimp Essentials, Klaviyo Email, Kit Creator). Annual-equivalent discounts are on individual tool pages. Volume-billed or seat-pack tools may show honest blanks — we refuse to guess.

Want a single tool’s full ladder? Brevo · Substack · EmailOctopus · Systeme.io · Sender

FAQ — email cost at 25,000

What is the cheapest email marketing tool for 25,000 subscribers?

Among tools with a verified public price at 25,000 contacts, Brevo is $0 (free plan covers this size) on the Starter plan we track. Unknown and contact-sales cells are excluded from “cheapest.” Confirm live on the vendor page.

Which email tools are free at 25,000 subscribers?

Verified free coverage at 25,000: Brevo, Substack. Free does not always mean unlimited automations or branding removal — read each free-plan note.

How often does ListCost re-check prices?

Each tool page cites last_checked dates from vendor pricing pages. Site-wide desk update: 29 Oct 2026. See /methodology for how blanks and volume-billed tools are handled.