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Nexsend

nexwinds.com · public beta by contact

Every send, stamped.

Email, SMS, and DMARC in one tenant — one API envelope, full audit trail. Built for developers who answer for deliverability.

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{ data, error, meta }X-Request-ID on every route

POST /api/v1/emails → 202● sample:req_01
curl -X POST $BASE/api/v1/emails \
  -H "Authorization: Bearer re_live_…" \
  -H "Idempotency-Key: once" \
  -d '{"to":"ada@example.com"}'

202 · Location: /api/v1/emails/em_01
{ "data": { "id": "sample:em_01" },
  "error": null,
  "meta": { "requestId": "sample:req_01" } }
X-Request-ID: sample:req_01Idempotency-Key: sample:once

Live envelope — copy, send, trace. Contact nexwinds.com for public beta.

The ledger rule

One envelope. Zero silent drops.

Every response uses one shape. Every send is traceable.

One envelope
{ data, error, meta }
Same shape on every route
Traceable
X-Request-ID
Stamped on all responses
Idempotent
Keys kept 7 days
Retry without double-send
Fail-closed
Redis limiter
Retry-After, never silent drop

Three channels

One tenant, every path stamped.

Integration hub

Email

Transactional queue with retries, suppression gate, and SES/SMTP providers. Poll status by ID, cancel by Idempotency-Key.202 + Location

SMS

Your Android devices as gateways. HMAC-signed pull, 3-minute backoff ×3, one message per minute per device.HMAC ±5 min

DMARC

Aggregate XML lands in a dedicated inbox, gets DNS-validated, blacklist-checked, and exported to PDF. The report is the proof.XML → PDF

DMARC, answered

The report is the proof.

No invented deliverability scores. Nexsend shows the aggregate XML it ingested, what DNS said, and the PDF you can forward to the domain owner.

How DMARC ingestion works

  1. IMAP poll → parse XML

    Aggregate mail lands in a dedicated inbox. Parsed, deduped, retained 60 days.

  2. DNS validate + blacklist check

    SPF/DKIM disposition checked live. Domains screened against blacklists.

  3. Alerts + PDF report

    Failures alert. Export the report itself — no invented scores.

Public beta · by contact

Ship your first stamped send.

Read the integration hub, copy the envelope pattern, and contact nexwinds.com for beta access.

Read docsOpen dashboard