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Service Postal API

Postal mail: send, preview, track and validate letters, plus bulk mail-merge campaigns and address checks

OpenAPI 3.0.023 operations49 schemas1 revision

Changes

Full history
Updated on 2026-10-13

Source

View schema
Document
docs.servicepostal.com · JSON, 384 KB
Retrieved
Oct 13, 2026
Digest
eeb6e5d31b9c

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/servicepostal/apis/service-postal-api.md
curl https://skmtc.dev/servicepostal/apis/service-postal-api/llms.txt