Developer platform

Build on Nigeria’s verified mailbox.

One API to deliver legally binding documents to identity-anchored recipients, sealed at the source and provable on demand.

POST /sender/tenants/{id}/contents
curl https://api.keepable.co/sender/tenants/ten_01HXP/contents \
  -H "Authorization: Bearer $KEEPABLE_TOKEN" \
  -H "Keepable-Version: 2026-05-29" \
  -d '{
    "recipient": { "identifier_type": "nin", "identifier": "012•••••91" },
    "subject": "Statement of account",
    "content_type": "statement",
    "parts": [{ "name": "march-2026.pdf", "media_type": "application/pdf", "data": "JVBER…" }]
  }'

# → 201 Created
{ "content_id": "cnt_3Fk…", "status": "delivered" }