Customer.io vs SendFox

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Customer.io

See full pricing history

USD · US · source: customer.io

Plan	Pricing	Charged by	Offer type
Essentials	USD 100 monthly Starts at $100/month billed monthly	Flat · per month	Standalone · Starting at
Premium Highlighted	USD 1000 / month with annual commitment Starts at $1,000/month billed yearly	Flat · per month	Standalone · Starting at

SendFox

See full pricing history

USD · US · source: sendfox.com

Plan	Pricing	Charged by	Offer type
Free — Start your list	Free $ 0 forever, no card	Flat · forever, no card	Standalone · Free
Pro — Grow it like a business Highlighted	USD 19 monthly · USD 19 / month with annual commitment $ 19 /mo	Flat · $19/mo	Standalone · Fixed

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Customer.io

Essentials

Plan card Profiles: 5,000

Included
Plan card Emails: 1 million/month

Included
Plan card Visual workflow builder: Included

Premium

Plan card Unlimited workspaces: Included
Plan card Advanced governance: Included
Plan card Dedicated implementation support: Included

SendFox

Free — Start your list

Highlights Contacts: 1,000 contacts

Included
Highlights Sends per month: 3,000 sends / month

Included
Highlights Smart pages: 1 smart page

Included
Highlights Forms: 1 form

Included
Highlights Automations: 1 automation

Included
Highlights Drag-and-drop editor: Included
Highlights AI email drafts: 2 AI email drafts to try

Included
Highlights API access: Excluded
Highlights MCP access: Excluded
Highlights SendFox branding on emails: Included

Pro — Grow it like a business

Highlights Contacts: 5,000 contacts

Included
Highlights Sends per month: 100,000 sends/mo

Included
Highlights White label: No SendFox anywhere

Included
Highlights MCP access: Included
Highlights AI email writer: Included
Highlights VIP sending IP: Included
Highlights Paid newsletters: Included
Highlights Single opt-in: Included
Highlights Full HTML editor: Included
Highlights Full-color social icons in emails: Included
Highlights Sends refresh every month: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Customer.io

August 27, 2026 Source
- Essentials: USD 100 monthly
- Premium: USD 1000 / month with annual commitment

SendFox

August 27, 2026 Source
- Free — Start your list: Free
- Pro — Grow it like a business: USD 19 monthly · USD 19 / month with annual commitment