Modular Mail is a CMS for email. Templates are set up once with locked modules and editable content fields. Your team builds every campaign and flow email by filling in the fields, then exports clean HTML to Klaviyo, Braze, Salesforce Marketing Cloud, Iterable, or any ESP.
Export clean HTML and drop it into the platform you already send from. No integrations, no vendor lock-in.
Your ESP's drag-and-drop builder is fine for basics, but the emails look like everyone else's. Custom designs mean HTML and dev support.
Every campaign needs someone technical to set up, tweak, or fix. You're stuck in a queue, waiting for changes that should take minutes.
Maybe you have HTML templates, but you're scared to edit them. One wrong click and the layout breaks, mobile is ruined, or Outlook gives up entirely.
Modular Mail solves this. Developers define the structure; marketers fill in the content.
Templates are configured for your team by us, your agency, or your developer. After that, your team owns the content.
Send your existing HTML, Figma files, or brand guidelines. We convert them into modules with defined content fields, the same way you'd configure a CMS theme. Your team logs in to a working system on day one.
Marketers see content fields (text, images, links, CTAs), not HTML. They select modules, fill in fields, reorder sections, and preview. It's content management, not code editing.
Export production-ready HTML and upload it to Mailchimp, Klaviyo, HubSpot, Salesforce, or wherever you already send from. Modular Mail is a CMS, not an ESP. Use the platform you want.
An email CMS isn't an ESP and isn't a builder. It's the layer that keeps templates protected and campaigns fast.
The template's layout, fonts, and spacing are locked. Content fields (text, images, links, CTAs) are open. Marketing edits what should change and nothing that shouldn't.
An email CMS manages content, not sending. Export clean HTML and upload it to Mailchimp, Klaviyo, Salesforce, or any platform you already use. No integrations, no lock-in.
A clear separation of concerns: your developer or agency builds the template, your team runs the campaigns. Every role does the work it's best at, nobody is the bottleneck.
Colours, fonts, and spacing live as tokens inside the template. Every campaign inherits them automatically, so the brand holds up across hundreds of sends without anyone policing it.
You don't need a developer to publish a blog post. You shouldn't need one to send a campaign. Once the structure is set up, your team owns the content.
You build templates for clients, then watch them get edited badly. With Modular Mail, your structure stays protected and the client edits content fields. Set up templates once; let clients self-serve. See how agencies use Modular Mail.
You've got perfectly good HTML templates sitting unused because nobody can edit them safely. Modular Mail makes them editable without rebuilding anything.
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.
Everything you need to know to get started.