The operations layer for your email platform.
Your ESP sends the emails and holds your customers. Mailfois runs everything behind each send: email planning, mock-ups, brand checks, translation, sign-off, data upkeep notifications and results, in one place for everyone who touches email.
- Button colour isn't in your brand kit#FF6B2C used. Your primary button is #E8541A.
- No postal address in the footerAdd your company address: required under CAN-SPAM.
- 2 images have no alt textAdd a short description to each image.
- CSS that Outlook ignoresFlexbox layout found. Use tables for structure.
- Unsubscribe link foundCheck it points to the right list.
An example check. Every finding is a fact plus a fix: no AI guessing.
The email chaos, sorted.
An in-house team sending to five markets: the spreadsheet plan and the morning chasing, sign-off by reply-all, an email that says 25% off when the page says 20%, translation by copy and paste, and the results nobody can join up. And how Mailfois fixes each one.
No sound. The companies, people and emails in it are made up.
Your ESP sends the email. Mailfois runs everything around it.
Keep building and sending where you do today. Mailfois handles the rest: what goes out where and when, whether it meets your brand rules, who approved it, and afterwards, how it did and how you show it off.
Plan
A calendar by market, with owners and build, sign-off and send dates.
Mock up & build
Wireframe or mock it up in Studio, then build in your ESP.
Check & approve
Brand Guard checks, then sign-off from your team or your client.
Send
From your ESP, exactly as now.
Keep & present
Every approved email in the Library, ready to turn into a showcase.
Measure
Results by campaign and market, and a live hub for clients and bosses.
Mailfois covers Plan · Mock up · Check & approve · Keep & present · Measure. Your platform builds and sends.
Built for two kinds of email team.
One plan for every market, and approvals that don't live in your inbox.
For CRM and lifecycle teams at growing brands, often sending to several countries and languages. Give copywriters, legal and senior stakeholders a place to review and approve, without giving everyone a login to your ESP.
- Planner by market. Each market has its own stage and send date, on one calendar.
- Brand Guard before sign-off. Colours, fonts, buttons, footer and accessibility, checked against your own rules.
- Sign-off with a record. Versioned review rounds, and only named approvers can approve.
- A library of everything sent. Find what went out in Germany last March in seconds.
Client sign-off without the email chains.
For agencies running email for several brands. Stop sending clients preview links that expire and documents nobody can find. Each client gets their own workspace, and their approvers sign off from a private link.
- A workspace per client. Separate plans, brand kits and libraries, with one switcher.
- Client approvers don't need an account. They review, comment and approve from a link in your agency's name.
- Internal notes stay internal. Only comments you mark for the client are visible to them.
- Proof of approval. Who approved which version, and when, for every email.
Not another tool to learn. Fewer tools to juggle.
Mailfois replaces the workarounds around your ESP, not the ESP itself. Every team that touches email, from copy and design to legal, market leads and clients, works from the same place.
One roof, not a pile of tools
Planning, brand checks, approvals, the archive, showcases and results in one workspace, instead of spreadsheets, chat threads, decks and a shared drive.
Private by design
The free tools run in your browser and never upload what you paste. Workspace data is stored in the UK (London), with access controlled row by row.
A fraction of the price
A free plan to start, and paid plans priced for teams rather than enterprises. See pricing.
Everything around the send, in one workspace.
All live today, with no migration and no change to how you send.
Idea boards
LiveWhere campaigns start — brainstorm boards and a shared whiteboard (sticky notes, shapes, pen, images and your real emails) your team shapes together, then promote the winners straight into the plan.
Campaign Planner
LiveAn email calendar by market: each market's stage and send date, build and sign-off deadlines, and a phone-friendly agenda.
Sign-off & approvals
LiveVersioned review rounds, comments and change requests, approved only by the people who should, with a full history.
Client approvers
LiveClients review, comment and approve from a private link, with no account and no seat, and see only the notes you share.
Brand Centre
LiveYour colours, type, spacing, buttons and footer rules made machine-readable — one source of truth Brand Guard enforces.
Brand Guard
LiveChecks every email against your brand kit and the basics: colours, fonts, buttons, footer, unsubscribe, alt text and CSS that Outlook ignores.
Email Library
LiveEvery signed-off email kept as a live, clickable preview — searchable by board, builder, month and theme, and it never expires.
Studio: mock-ups & modules
LiveCut reusable modules from your real emails, stack them into mock-ups and team templates, or sketch a wireframe. Check it, send it for sign-off, copy the code.
Journeys
LiveMap welcome series, abandoned basket and winback flows with the real emails, the waits and splits between them, and team comments.
Automations
LiveA register of your always-on emails: each flow's emails and their sign-off, weekly landing page checks, results per step and a reminder when it's due a review.
Specialist sign-off
LiveLegal, Pricing or a market reviewer signs off just their part of an email, highlighted for them. Approved wording such as footers is remembered for next time.
Upkeep
LiveList hygiene, domain renewals, access reviews and data request deadlines: each recurring job with an owner, reminders and a record you can show.
Showcase
LiveTurn approved emails, or any preview link, into a short video with your campaign results alongside. Share it as a link or download an MP4 for the slide deck.
Email results
LiveImport your ESP's export or add results by hand. Rates worked out for you, matched to the campaigns you planned, by market and month.
Client hubs
LiveOne live, password-protected link for a client or your boss: results, the emails behind them and your showcases, always up to date.
Documents
LiveGuidelines, how-to guides and reference docs, stored in folders and previewed in-app — no more digging through desktops or Teams.
Workspace search
LiveYour team's memory. Search everything you've ever planned, sent, discussed or saved — campaigns, ideas, links and files — from one box.
Shareable board links
LivePublish a read-only, password-protected view of any plan for stakeholders or your translation team — and retract it anytime.
Deliverability & reputation
LiveAudit SPF, DKIM and DMARC and monitor sender reputation, so the work you approve actually lands in the inbox.
Insights
LiveVolumes, approvals, turnaround and team workload, broken down by board, builder, theme and month.
Brand Intelligence
ComingDrift detection and performance memory that learns your brand and what actually works.
The tools you keep in other tabs, under one roof.
Every workspace comes with the everyday jobs around an email build, next to the plan and the approvals. Each one opens in its own tab when you want it beside your ESP.
Image resizer & cropper
Exact sizes for your template, alt text as you go, one ZIP out. Images never leave your browser.
Text on an image
Headlines and buttons on a picture in your brand style, with contrast measured against the picture behind them.
Translation brief
Paste a preview link and get every word to translate, in reading order, as a sheet for translators.
Build checklist
Your team's build steps, ticked off per campaign and shown to the approver at sign-off.
ESP cheat sheets
What Klaviyo, Braze, Salesforce and nine others call things, in plain English, as a PDF.
Deliverability Auditor
SPF, DKIM, DMARC, MX, MTA-STS and BIMI, with the exact fix for anything wrong.
Handy links
The ESP login, brand assets and dashboards in one searchable list for the whole team.
Not ready for a workspace? Start with the free pre-send tools.
A dozen checks that run in your browser: no account, nothing uploaded. When you want them on every campaign, with sign-off attached, that's the workspace.
Subject line tester
LiveLength, spam words, emoji and cut-off points.
Subject line bank
Live50+ subject ideas — swap in your brand and test.
Preheader optimizer
LiveThe most underused space in the inbox, done right.
Inbox preview
LiveSee it across Gmail, Outlook and Apple Mail.
Read time & readability
LiveWord count, reading ease and read time.
Plain-text generator
LiveClean plain-text version of any HTML email.
Spam checker
LiveScore trigger words, caps and links in your content.
Send-time optimizer
LiveThe right window for your audience and email type.
List & data cleaner
LiveDedupe, normalize and validate your list.
Case converter
LiveBulk lowercase, UPPERCASE, Title and Sentence case.
First & last name splitter
LiveSplit full names into first and last name.
UTM builder
LiveTrackable links with email best-practice defaults.
Get it right, not just sent.
Practical guides for email teams in any market: planning, approvals, compliance and getting it right before it sends.
Email marketing calendar template
Free downloadExcel and Google Sheets, one row per campaign per market.
Email marketing calendar 2027
Key datesEvery date that matters in 2027, country by country.
The email campaign workflow
GuideFrom brief to send, and approvals that don't stall.
The complete pre-send email checklist
GuideThe 12 checks to run before every send.
Canadian email marketing law: CASL
GuideConsent that expires, sender details and unsubscribes under CASL, in plain English.
Questions teams ask first.
What is Mailfois?
Mailfois is the operations layer for your email platform, for in-house teams and agencies. Your ESP sends the emails and holds your customers; Mailfois covers the work around the send: planning campaigns by market, mapping journeys, mocking emails up from reusable modules, checking emails against brand rules, team and client sign-off, a permanent library of approved emails, showcases of the work, and campaign results with live client hubs. You keep building and sending in your own ESP.
Does Mailfois replace my ESP?
No. Mailfois works alongside Klaviyo, Braze, Bloomreach, Salesforce Marketing Cloud, Mailchimp, HubSpot and any other ESP. You build and send there as you do now; Mailfois handles the planning, checks, approvals, archive and reporting around it.
How is Mailfois different from Litmus?
Litmus is mainly an email testing tool, known for inbox previews across email clients. Mailfois doesn't render emails in dozens of clients. It runs the rest of the process: the plan, brand checks, sign-off with a record, the library, showcases and results, for a fraction of the price.
Who is Mailfois for?
In-house email and CRM teams, especially those sending to several markets or languages, and agencies running email for several clients. Copywriters, designers, legal, market leads and clients can all work in the same place, and outside approvers don't need an account.
How do I report email results in Mailfois?
Import your ESP's campaign export (CSV, Excel or pasted cells) or add results by hand. Mailfois matches results to the campaigns you planned and signed off, works out the rates for you, breaks them down by market and month, and can share them with a client or stakeholder as a live, password-protected hub.
Is there a free plan?
Yes. The free plan includes one planner board with up to 15 campaigns, three sign-offs a month, brand checks, Showcase, email results and the free tools. Paid plans lift the limits for one person, a team or an agency.
Where is my data stored?
Workspace data is stored in the UK (London), with access controlled row by row. The free browser tools never upload what you paste.
More on plans and billing on the pricing page.