Nusii Proposals provides a strictly B2B, compliant environment for generating, tracking, and executing legally binding business proposals. Engineered for speed, strict access control, and eIDAS compliance.
For authorized B2B entities only.
Infrastructure integrates seamlessly with enterprise stacks
Our platform ensures that critical business documents reach their destination securely, with zero tolerance for latency or data leakage.
System alerts and transactional notifications are processed through prioritized queues. We guarantee sub-second rendering for proposal views and immediate dispatch for cryptographic signature requests.
Every interaction is logged with precise timestamps and IP tracking. Electronic signatures capture intent and generate a secure SHA-256 hash, ensuring legal non-repudiation across the EU and US.
Maintain complete visibility over your document lifecycle. Access detailed webhooks regarding delivery events (bounces, drops, opens) to ensure SLA compliance with your own clients.
Configure custom domains, set up dedicated IP pools for transactional routes, and manage API keys for your CRM integration.
Nusii Proposals maintains a strict separation of concerns regarding external communications. Our MTAs are configured exclusively for high-priority transactional events triggered by direct user action.
Accepted Traffic Types:
Strictly Prohibited: Bulk marketing, cold outreach, promotional newsletters, and affiliate tracking. Accounts violating the Acceptable Use Policy face immediate suspension via automated heuristic analysis.
{
"event": "proposal_signed",
"timestamp": "2026-03-17T09:35:08Z",
"document_id": "doc_8f92a1b",
"parties": [
{"role": "sender", "entity": "Nusii Proposals S.L."},
{"role": "signer", "ip": "192.168.1.1", "verified": true}
],
"audit_trail": {
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"algorithm": "SHA-256"
},
"action": "trigger_transactional_email_receipt"
}