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The email CMS

Your email templates, editable by your whole team.

Modular Mail turns your custom HTML templates into a locked editor. Your team builds campaigns from your modules and exports finished HTML to Salesforce Marketing Cloud, Braze or any other ESP. The design stays exactly as it was built.

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Book a demo and we'll show you one of your own recent emails, rebuilt in Modular Mail.

Exports to the ESP you already use

  • Klaviyo
  • Braze
  • Salesforce Marketing Cloud
  • Iterable
  • Bloomreach
  • HubSpot
  • Marketo
  • Customer.io
  • Mailchimp
  • and any platform that sends HTML email
The problem

Every content team has a CMS. Except the email team.

Your website team publishes without a developer. Your email team still waits for one.

01

Custom templates your ESP can't edit

Most ESP visual editors can't open hand-coded HTML, so every change happens in code.

02

A queue for every change

Even a new banner waits for a developer or an agency, so the campaign ships when they're free.

03

Copy, paste and hope

Someone edits last week's HTML by hand, until a missing tag breaks the layout in Outlook.

04

Feedback in multiple places

Notes arrive by email and Slack, and nobody's sure which version was signed off.

8.2 days

to get a single email out, on average. That's nearly three days longer than in 2018, and the survey puts it down to longer approval chains and more people checking each send.Really Good Emails survey of 1,677 email professionals, 2025

We used to wait three to five days for dev to update our email templates. Now my team builds campaigns in an afternoon. Same custom designs, zero technical dependency.

Hin ShahHead of CRM, Dr. Barbara Sturm
How Modular Mail fixes it

Developers set the structure once. Your team handles the rest.

Modular Mail separates what your emails look like from what they say. The look is locked inside the template, and the content becomes fields your team fills in.

Locked in the template

Written into the template's HTML once, and every campaign gets it unchanged.

  • Layout and structure
  • Fonts and type sizes
  • Spacing and padding
  • Brand colours
  • Fixes for Outlook and Gmail

Editable by your team

Each marked part becomes a field. Your team fills in the form and never sees the code.

How it works

Live in a couple of weeks. Every campaign after that starts here.

  1. 01

    Your templates, set up once

    Your developer, your agency or our team turns your designs into modules with content fields.

  2. 02

    Your team builds campaigns

    Drag modules from your library into order and fill in the fields. The preview updates as you type.

  3. 03

    Test it, then get sign-off

    Send a test to your inbox or Litmus, then ask reviewers to comment and approve.

  4. 04

    Export to your ESP

    Copy or download the approved HTML and add it to whichever ESP you send from.

Features

Room for your team to work, inside the lines you set

The layout can't drift

Your brand's styles are written into the template, and marketers can only edit the fields you've opened. Publish a change to the template and every new campaign picks it up.

AI that writes in your voice

The Copy Assistant rewrites any field and AI Alt Text describes every image. Both follow your brand voice and restricted-term rules.

Options without code

Offer approved button colours and layouts as dropdowns. Set them on a single field or across the whole campaign.

Limits where a field needs them

Set a character limit so a long headline never pushes your hero onto three lines. Make a field required and nobody can leave it empty.

Sign-off on the email itself

Comment on the whole email or on one part of it, and resolve the thread once it's sorted. Request a review and each reviewer approves the campaign when they're happy.

A history of every change

Each campaign is versioned, so you can see who changed what and roll back.

Who it's for

Built for the teams that make email every week

Ecommerce and CRM teams

Send several campaigns a week from custom templates, without a developer on call.

See how CRM teams use it

Agencies

Hand each client a workspace built from your templates. They build campaigns while your design stays intact.

Modular Mail for agencies

Email developers

Add a data-mm attribute to the HTML you already write, then build modules instead of campaigns.

Modular Mail for developers
FAQ

Questions teams ask first

Something else? Get in touch

Do I need a developer?

Not day to day. Templates are set up once by us, your agency or your developer. After that your team builds campaigns without touching code.

What if we don't have templates yet?

We build them from your brand guidelines, reference designs or Figma files, quoted as a one-off project. You can also start from a free template in our library.

Does it work with our ESP?

Yes. Modular Mail exports HTML for Klaviyo, Braze, Salesforce Marketing Cloud, HubSpot, Marketo, Iterable and any platform that accepts HTML. There's no integration to install, and your ESP still sends the email, so your lists and flows stay where they are.

How is it different from Stripo or Beefree?

They suit a different way of working. Stripo and Beefree are for designing each email from blocks. Modular Mail is for teams whose design already lives in a template: your developer decides which parts can change, and the team fills them in, gets sign-off and exports.

Can we use it for flows as well as campaigns?

Yes. Every email exports the same way, so welcome, abandoned basket and post-purchase emails can use the same modules as your campaigns.

Can people review and approve emails before they go out?

Yes. Request a review and each reviewer gets an email that opens the campaign. They comment on any part of it and click Approve when they're happy, and you can see who has approved.

Do reviewers need a paid seat?

No. Reviewers can see campaigns, comment and approve for free. You pay for editors, the people who build templates and campaigns.

What does it cost?

Starter is £149 a month for 2 editors, and Team is £360 a month for 10. Reviewers are free on every plan. Enterprise, for agencies and larger companies, starts at £10,000 a year. If you'd like help with setup and training, we quote it separately, from £1,000. See pricing

Can we try it first?

Yes. Start a free trial from the app, or book a demo and see one of your own emails rebuilt.

See your own email in Modular Mail.

Send us a recent campaign. We'll rebuild it before the call, so you can see exactly how your team would work.

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