LE

Lettr API

Email: send transactional emails, manage templates, domains, webhooks, audiences and campaigns

Proprietary71 operations143 schemas1 revision

Changes

Full history

Source

View schema
Spec
OpenAPI 3.1.0
Document
docs.lettr.com · JSON, 451 KB
Retrieved
Oct 19, 2026, 16:17 UTC
Digest
48ef0dac1ebd

For agents

Every page here has a markdown twin. The overview is one fetch; the llms.txt lists every operation with a link to its own markdown.

curl https://skmtc.dev/lettr/apis/lettr-api.md
curl https://skmtc.dev/lettr/apis/lettr-api/llms.txt