The short answer
- Choose Litmus if your problem is rendering: seeing an email in 100+ email clients and dark mode, spam testing, and native connections to platforms such as Klaviyo, Salesforce and HubSpot.
- Choose Mailfois if your problem is the process: the plan by market, mock-ups, translation, brand checks, sign-off with a record, and a library of everything sent.
- Many teams use both: Mailfois for plan, translate and sign off; Litmus for the final rendering test.
Who’s writing this: I’m Liam Kane and I built Mailfois, so I’m not neutral. I’ve tried to be fair about where the other tool is the better choice. Facts and prices come from each company’s own website and help pages, checked on 18 October 2026.
Side by side
| Litmus | Mailfois | |
|---|---|---|
| Built for | Email testing and QA, plus a builder and analytics | The email workflow: plan, mock up, translate, check, sign off, archive, report |
| Email client previews | 100+ email clients, including dark mode | Phone and desktop preview, simulated dark mode and images off; no real email-client screenshots |
| Spam and pre-send tests | Spam filter tests, link, image and tracking checks | Brand Guard: your brand kit, accessibility, Gmail clipping, Outlook problems, dark mode, preview text, spam phrases and risky links, each shown in the email; link and landing-page checks. No spam filter (seed) tests |
| Review and approval | Litmus Proof, with unlimited reviewers and no account needed; Litmus says it’s available on Enterprise plans | Sign-off rounds with outside approvers by private link on every plan, including Free |
| Campaign planning | Not built in | Email calendar by market |
| Translation | Not built in | Copy Bank with translator links |
| ESP connections | Native: Klaviyo, Salesforce Marketing Cloud, HubSpot, Mailchimp, Marketo and more | None, by design: Mailfois never holds a log-in to your email platform. Emails come in by preview link or HTML |
| Price | Not published: Litmus’s pricing page asks you to contact sales (Core reported at $500 a month for 5 users) | Free; Pro £12 a month; Team £24 per seat a month, published |
Where each one wins
Litmus is better for
- Seeing exactly how an email renders across 100+ email clients and dark mode.
- Spam filter testing before a big send.
- Native connections to many email platforms.
- Developers who build and test email code all day.
Mailfois is better for
- Getting emails agreed: rounds, outside approvers and an approval record on every plan.
- Planning by market and translating copy.
- Checking every email against your own brand rules and what inboxes need, in the same place it gets signed off.
- Teams that want clear, published pricing from free.
What a team of five pays
| Litmus | Mailfois | |
|---|---|---|
| Five people | Core reported at $500 a month (not published by Litmus); review and approval (Proof) on Enterprise, price on request | £120 a month (Team, 5 seats at £24); outside approvers free |
See also our Litmus alternatives page, which covers testing tools such as Email on Acid.
Comparing more tools? See the best email approval software for 2027, with 12 tools side by side.
Frequently asked questions
Is Mailfois a Litmus alternative?
Partly. Mailfois doesn’t take real screenshots in dozens of email clients, which is Litmus’s core. Its Brand Guard does run the code checks teams use Litmus for (Gmail clipping, Outlook problems, dark mode, accessibility, preview text, spam phrases and risky links), with a phone, desktop, dark mode and images-off preview, and it replaces the review, approval and planning that teams often bolt onto Litmus.
How much does Litmus cost?
Litmus no longer publishes prices; its pricing page asks you to contact sales. Third-party reports put its Core plan at $500 a month for five users from August 2025.
Can I use Litmus and Mailfois together?
Yes. Plan, mock up, translate and sign off in Mailfois, then run the final rendering and spam tests in Litmus before sending from your email platform.
Liam Kane is an email and marketing automation specialist with over ten years in marketing and seven in email, planning and building campaigns on Marketo, Bloomreach and Silverpop. He founded Mailfois, so read his take on it with that in mind. More about Liam.
Sources, checked 18 October 2026: Litmus pricing, Litmus collaboration, Litmus: review your email, Litmus email testing, emailexpert.com on Litmus’s 2025 prices (third party). Prices are in the currency each company publishes and change over time, so check before you buy. Spotted something out of date? Tell us.