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SendFox is email marketing software built for people who write newsletters rather than run marketing departments. It does not try to be Mailchimp. There is no CRM, no landing page builder with forty templates, no lead scoring. There is a list, an editor, automations, and a send button.
That narrow scope is the whole point, and it is also the reason it costs $29 once instead of $300 a year. Whether that trade works for you depends on two things most reviews skip: a sending limit that never refreshes, and a branding footer you cannot remove on the cheap plan.
Pricing and plan details checked: October 2026. Figures come from SendFox’s pricing page and its official help centre — the $29 Lifetime send pool and Pro tier comparison, both last updated 30 September 2026. This is desk research against published documentation, not hands-on testing, and we say so rather than implying otherwise. See How We Review Tools.
Quick verdict
Buy SendFox if you write a newsletter to fewer than about 2,000 people, you want to stop paying monthly for something simple, and a small footer on your emails does not bother you. At $29 once, it is close to unbeatable for that profile.
Skip it if you need your emails fully unbranded, your list is near 5,000 and you send often, or you want segmentation, A/B testing and reporting depth. SendFox does not have those, and is not pretending to.
The one thing to check before buying: the Lifetime plan gives you 300,000 emails in total, forever — not per month. For a 500-person list sending weekly that is about eleven years. For a 5,000-person list sending twice a week, it is under a year. Do that sum before you decide.
Quick facts
| SendFox | |
|---|---|
| What it is | Simple email marketing for newsletter writers and creators |
| Cheapest paid plan | $29 one-time (Lifetime, via AppSumo) |
| Subscription option | Pro, $19 to $399 per month |
| Free plan | Yes — 1,000 contacts, 3,000 sends a month |
| Best for | Solo writers, creators, small lists |
| Weakest at | Branding removal, segmentation, heavy sending |
| Lifetime deal | Yes, genuinely one-time |
What SendFox actually does
The feature set is deliberately short, so it is worth listing honestly rather than padding it out.
- Contacts and lists with a drag-and-drop email editor
- Automations — unlimited on paid plans, one on free
- Smart Pages — simple hosted landing pages for sign-ups
- Forms to embed on your own site
- An AI email writer (two drafts on free, included on Lifetime and Pro)
- Full API access on Lifetime and Pro
- Paid newsletters via Stripe — Pro only
- MCP access for connecting an AI assistant — Pro only
What is not there matters just as much: no advanced segmentation, no A/B testing, no detailed analytics suite, no visual automation branching. If your email strategy depends on any of those, SendFox is the wrong tool and no amount of price advantage fixes that.
Plans and what each one costs
| Plan | Price | Contacts | Sending |
|---|---|---|---|
| Free | $0 | 1,000 | 3,000 per month |
| Lifetime | $29 one-time | 5,000 | 300,000 total — never refreshes |
| Pro 1 | $19/mo or $190/yr | 5,000 | 100,000 per month |
| Pro 2 | $39/mo or $390/yr | 15,000 | 200,000 per month |
| Pro 3 | $79/mo or $790/yr | 50,000 | 400,000 per month |
| Pro 4 | $149/mo or $1,490/yr | 100,000 | 800,000 per month |
| Pro 5 | $399/mo or $3,990/yr | 250,000 | 2,000,000 per month |
Annual billing on Pro charges ten months for twelve. Every Pro tier has identical features — only contacts and monthly sends change — so you pick the tier that matches your list, not the one with the features you want.
The Lifetime plan is sold through AppSumo. Pro is bought directly from SendFox. We cover the full breakdown, including the arithmetic on how long the send pool lasts, in our SendFox pricing guide.
Decided already? Check the current SendFox Lifetime price on AppSumo.
The free plan is more usable than most
SendFox’s free tier gives you 1,000 contacts and 3,000 sends a month, plus one Smart Page, one form and one automation. You also get two AI email drafts to try.
For a list under 750 people sending weekly, that is a working product rather than a teaser — you can run a real newsletter on it indefinitely. What you give up is API access, MCP access, and SendFox branding stays on your emails.
Our view: start here rather than on the paid plan. If you outgrow 1,000 contacts or 3,000 monthly sends, you will know within two months, and $29 will feel like an easy decision instead of a gamble.
What we would flag before you buy
1. The send pool is finite, and that is unusual
Most email tools give you a monthly allowance that resets. SendFox’s Lifetime plan gives you one pool of 300,000 emails that never refreshes. Newsletters and automations both draw from it.
SendFox warns you by email at 90% and 100%, and shows usage on the Emails page once you pass 80%. When it runs out, sending stops until you add a Pro tier — your contacts and campaigns stay intact.
2. You cannot remove the branding on Lifetime
A small SendFox footer stays on every email. Whitelabel is a Pro feature. If you email clients under your own business name, that footer is a $19-a-month problem rather than a cosmetic one, and it is the single most common reason a Lifetime buyer ends up subscribing anyway.
3. One Lifetime deal per account
You cannot buy two to double the pool. If 300,000 sends is not enough, the answer is Pro, not a second purchase.
4. Older lifetime deals are not unlimited either
If you bought a SendFox lifetime deal years ago on the understanding that sending was unlimited, SendFox’s current documentation says otherwise: accounts sending more than their one-time purchase covers are asked to move to a Pro tier. Worth knowing before you plan a large campaign on an old deal.
5. SendFox points you at Pro, not Lifetime
On its own pricing page SendFox labels Pro as “Most creators pick this” and states plainly on the card that Pro “sends refresh every month” against Lifetime’s “pay once, 300K sends, forever”. The vendor is not hiding the trade-off. Most reviews simply skip it.
Pros and cons
What SendFox does well
- Price. $29 once against $190+ a year for comparable contact limits elsewhere.
- A genuinely usable free plan — 1,000 contacts and 3,000 monthly sends, not a 14-day trial.
- Unlimited automations, Smart Pages and forms on paid plans.
- Full API access on Lifetime, which many cheap tools reserve for top tiers.
- It is simple. For a newsletter, that is a feature.
- Limits act as a floor. If your Lifetime deal gives more contacts than the Pro tier you later add, you keep the higher number.
Where it falls short
- Branding stays on Lifetime — whitelabel is Pro only.
- The 300,000 pool never refreshes, which catches people out.
- No advanced segmentation, A/B testing or deep analytics.
- Paid newsletters and MCP access are Pro only.
- Lifetime caps at 5,000 contacts — growth means subscribing.
Who should use SendFox
- Newsletter writers with a list under about 2,000
- Creators and solo operators who want to stop paying monthly
- Anyone starting an email list from zero
- People who already outgrew a free tier elsewhere and want out of subscriptions
- Writers who value a simple editor over a feature matrix
Who should avoid it
- Anyone who needs emails fully unbranded on a budget plan
- Lists near 5,000 contacts sending more than once a week
- Businesses running segmented campaigns or A/B tests
- Agencies sending on behalf of clients under their own name
- Teams expecting to pass 5,000 contacts within the year
Alternatives worth knowing about
We have not price-verified these for this article, so treat them as pointers rather than recommendations — check current pricing on each vendor’s own page before deciding.
- MailerLite — the usual step up when you need segmentation and better reporting
- Buttondown — similar minimalist philosophy, subscription only
- Beehiiv and Substack — publishing platforms rather than email tools, worth comparing if monetising the newsletter is the goal
- ConvertKit (now Kit) — heavier and more expensive, built for creators selling products
The honest framing: SendFox is not competing with these on capability. It is competing on being cheap and finished.
Frequently asked questions
Is SendFox any good?
For a simple newsletter to a small list, yes — it does the core job for a fraction of the usual cost. For segmented marketing campaigns, no, because it does not have those features.
How much does SendFox cost?
Free for up to 1,000 contacts. The Lifetime plan is $29 once via AppSumo. Pro runs $19 to $399 a month depending on list size.
Does SendFox have a free plan?
Yes, permanently. It covers 1,000 contacts and 3,000 sends a month, with one Smart Page, one form and one automation.
Is the SendFox lifetime deal unlimited?
No. It includes 300,000 emails as a one-time pool that never refreshes. Only Pro tiers give a fresh monthly allowance.
Can I remove SendFox branding?
Only on Pro. The Lifetime plan keeps a small SendFox footer on emails.
Is SendFox better than Mailchimp?
Cheaper and simpler, not more capable. If you need Mailchimp’s segmentation, automation branching and reporting, SendFox will feel thin. If you send a weekly newsletter and never touched those features, you are paying for software you do not use.
Can I take payments or run a paid newsletter?
Paid newsletters through Stripe are a Pro feature, not included on Lifetime.
Final verdict
SendFox is one of the few lifetime deals where the maths genuinely works, provided you are honest about your list. At $29 for 5,000 contacts and 300,000 sends, a writer with 800 subscribers and a weekly newsletter is buying close to a decade of email marketing for the price of one month on most platforms.
The two things that turn it from bargain to false economy are both predictable: a list large enough to burn the pool quickly, and a business that cannot carry someone else’s footer on its emails. Neither is a flaw in the product — they are just the edges of what $29 buys.
Start on the free plan. If you are still using it in a month and bumping against 1,000 contacts, the $29 is an easy yes.
Sources checked
- SendFox — pricing page (checked October 2026)
- SendFox Help Centre — $29 Lifetime send pool (updated 30 September 2026)
- SendFox Help Centre — Which Pro tier should I choose? (updated 30 September 2026)
Pricing and plan limits change. Confirm current figures on the vendor’s own page before you buy.
