MailPulse

active

Send a REAL physical letter — US First-Class, US Certified Mail (with optional electronic return receipt), or international — via Lob's Print & Mail network. This is an ACTION API, not a data lookup: paying causes a real letter to be printed and mailed. Flow: free quote - paid send - optional status poll. Pay-per-call via x402 (USDC on Base). No API keys, no accounts, no subscriptions.

MediaBaseSolanax402 v2exactmailpulse.theaslangroupllc.com ↗︎
Transactions · 30d
0
Volume · 30d
$0.00
Unique buyers · 30d
0
Uptime · 30d
100.0%
Latency p50
82ms
Reported calls · 30d
8

Endpoints (5 live)

  • POST /api/letters/ltr_1a9b185b1c4ee035 — Check the status and tracking of a physical letter previously sent via POST /api/letters. Returns render status, expected delivery date, and (for certified mail) the USPS tracking number. (0.005 USDC on Base)
  • POST /api/letters/ltr_6efe036558965c36 — Check the status and tracking of a physical letter previously sent via POST /api/letters. Returns render status, expected delivery date, and (for certified mail) the USPS tracking number. (0.005 USDC on Base)
  • GET /api/letters/1 — Check the status and tracking of a physical letter previously sent via POST /api/letters. Returns render status, expected delivery date, and (for certified mail) the USPS tracking number. (0.005 USDC on Solana)
  • POST /api/letters — Send a real physical letter (US first-class, US certified, or international) via Lob's Print & Mail network. This is an ACTION endpoint, not a data lookup: it prints and mails a physical letter to the destination address once payment settles. Requires a quote_id from POST /api/quote (free) and a client_request_id for idempotency. The submitted "from" address is the sender of record. (0.000001 USDC on Solana)
  • POST /api/verify-address — Verify a mailing address before sending physical mail through it. Wraps Lob's US and international address verification engines: standardizes the address, flags undeliverable/incomplete addresses, and returns a deliverability verdict. Run this before /api/quote and /api/letters to avoid paying to print and post a letter that will bounce. (0.01 USDC on Base)

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