SendFox vs Substack
Both are in Newsletter platforms. Here is how their plans, prices and features compare, taken from each vendor's own site.
The main differences
- Fees: SendFox From, at 5K contacts; price rises with contacts, $29 one-time; Substack 10% of paid-subscription revenue, plus credit card fees.
| SendFox | Substack | |
|---|---|---|
| Starting price | Free plan · from $19/mo | Not verified yet |
| Free plan | Yes | Not stated by the vendor |
| Free trial | Not stated by the vendor | Not stated by the vendor |
| Plans | Free ($0); Pro ($19/mo); Lifetime () | Revenue share () |
| Fees | From, at 5K contacts; price rises with contacts; $29 one-time | 10% of paid-subscription revenue, plus credit card fees |
| Best for | Creators | Creators |
| Key features | Drag-and-drop editor; Smart pages, forms and automations; AI email drafts and an AI email writer (Pro); Paid newsletters through Stripe (Pro) | Newsletters with free and paid posts; Paid subscriptions set up in minutes; You own your content and subscriber list |
| Checked on | 2026-10-03 | 2026-10-02 |
Prices change; confirm on the vendor's site before you buy. Full details and sources are on each tool's page.
SendFox
- Free forever plan with no card
- A one-time $29 Lifetime option with 300,000 sends
- Annual billing gives 2 months free
Trade-offs
- Free is limited to 1,000 contacts, 3,000 sends a month and SendFox branding
- Free has no API or MCP access
- Lifetime keeps a small SendFox footer and is limited to 5,000 contacts
Substack
- No monthly fee is listed on the page
- Writers keep 90% of subscription revenue before card fees
- Set free or paid access post by post
Trade-offs
- Substack keeps 10% of revenue, on top of credit card fees
- The page does not list a plan comparison or feature tiers