Developer Cloud / DEB
FREEDesign HTML emails. Free.
The DUMO Email Builder designs and exports HTML emails — no plan needed. Save templates and send them through DES by template ID.
No plan needed
Template saved
id: tpl_welcome
blocks: header · hero · text · button · footer
export: welcome.html (inlined CSS)
Send it with DES →
POST /v1/des/send
{
"template_id": "tpl_welcome"
}What you get
Build emails people actually read.
Drag-and-drop blocks
Headers, text, images and buttons that work in every inbox.
Clean HTML export
Download HTML with inlined styles.
Send through DES
Save a template and send it by ID.
One plan
Comes with Developer Cloud.
One Developer Cloud plan — billed once a year — unlocks every API. Most usage is pay-as-you-go, from one credit wallet.
CMSHeadless content.LIVE
DESTransactional email API.LIVE
DEBDesign HTML emails. Free.FREE
FunctionsServerless functions.COMING SOONFAQ
Questions.
Yes. DEB is free on its own — no plan needed. Sending always goes through DES.
Yes. Save a DEB template and use its ID in Reach to build campaigns from your own HTML designs.
No. DEB is a browser tool — you design and export HTML without an API key. A key is only needed when you send through DES.
One sign-up. Every API.
Create an API key, verify your domain and send your first email today.
Billed once a year · usage pay-as-you-go