Plunk 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.

Plunk

See full pricing history

USD · US · source: www.useplunk.com

Plan	Pricing	Charged by	Offer type
Free forever	Free 1,000 emails / mo	Flat · 1,000 emails / mo	Standalone · Free
Pay as you grow	USD 0 per email $0.001 / email	Usage · email	Standalone · Usage based

SendFox

See full pricing history

USD · US · source: sendfox.com

Plan	Pricing	Charged by	Offer type
Free	Free $ 0 forever, no card	Flat · forever	Standalone · Free
Pro Highlighted	USD 19 monthly · USD 15.83 / month with annual commitment $19/mo. Save $38 a year. Monthly Annual 2 months free. First year $190	Flat · /mo	Standalone · Starting at
Custom	Contact sales Let's talk custom pricing, dedicated IPs, and migration help.	Other	Standalone · Contact sales

What each plan includes

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

Plunk

Free forever

Highlights No credit card required: Included
Highlights Transactional emails: Included
Highlights Workflow automation: Included
Highlights Campaign broadcasts: Included
Highlights Custom domains: Included
Highlights Click & open tracking: Included
Highlights Unlimited contacts: Included
Highlights Plunk branding on emails: Included

Pay as you grow

Highlights Everything in Free: Included
Highlights No Plunk branding: Included
Highlights Monthly spend cap: Included
Highlights Unlimited emails: Included

SendFox

Free

Highlights Contacts: 1,000

Included
Highlights Sends: 3,000 / month

Included
Highlights Smart pages: 1

Included
Highlights Forms: 1

Included
Highlights Automations: 1

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

Limited
Highlights API access: Excluded
Highlights MCP access: Excluded
Highlights SendFox branding: Included

Pro

Highlights Contacts: 5K–250K

Included
Highlights Sends: 100K /mo

Included
Highlights White label: 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: Included

Custom

How their prices changed

Each date shows when a public price was observed, not when it took effect. An archived region or currency can differ, so a currency change is not necessarily a price increase.

Plunk

September 21, 2026
Official pricing page
- Free forever: Free
- Pay as you grow: USD 0 per email
August 27, 2026
Official pricing page
- Free — Free: Free
- Paid — Pay as you grow: $0.001 per email

SendFox

September 21, 2026
Official pricing page
- Free: Free
- Pro: USD 19 monthly · USD 15.83 / month with annual commitment
- Custom: Contact sales
August 27, 2026
Official pricing page
- Free — Start your list: Free
- Pro — Grow it like a business: USD 19 monthly · USD 19 / month with annual commitment