Sign.Plus Review 2026: Swiss eSignature, Fax.Plus & Legal Validity Test

🧭 AI MAESTRO HUB • INDEPENDENT EDITORIAL AUDIT

Sign.Plus (Alohi) とは？（概要と即答）

Sign.Plus (Alohi) (電子署名・PDF文書セキュリティ): Developed by Swiss security firm Alohi, Sign.Plus (and companion Fax.Plus) is a highly secure, legally binding electronic signature platform compliant with eIDAS, ESIGN, HIPAA, and SOC 2 Type II. It enables teams to send, sign, and archive legally binding documents with zero friction and enterprise-grade encryption.

実機テスト済み主要機能：

✓ Legally Binding Global eSignatures

✓ Cryptographic Audit Trail

✓ Swiss-Grade Data Encryption

✓ Integrated Cloud Fax (Fax.Plus)

⚡ 主な業務自動化・実務機能

✓ Legally Binding Global eSignatures

Compliant with US ESIGN Act, European eIDAS, and international electronic signature statutes.

✓ Cryptographic Audit Trail

Tamper-evident completion certificates logging signer IP addresses, timestamps, and identity verification.

✓ Swiss-Grade Data Encryption

Protected by AES-256 encryption at rest and TLS 1.3 in transit with Swiss data residency options.

✓ Integrated Cloud Fax (Fax.Plus)

Enables high-security digital cloud faxing alongside electronic signatures without physical hardware.

💰 料金プランと総保有コスト（TCO）

標準法人料金プラン

Free Plan (3 Docs) / From $7.99/mo

Verified introductory terms and active promotional access available via official gateway.

Sign.Plus (Alohi) の機能を見る →

🎯 導入判断マトリクス：おすすめの企業層

導入をおすすめする企業・チーム：

✓ Organizations seeking a secure, budget-friendly alternative to high-priced DocuSign and Adobe Sign tiers
✓ Legal and financial teams governed by strict European (eIDAS/GDPR) and Swiss data privacy standards
✓ Healthcare and enterprise companies that require both compliant e-signatures and digital cloud faxing

他社ツールを検討すべきケース：

✗ You only sign 1 or 2 documents per year and can use free built-in operating system tools
✗ You require deep CPQ enterprise contract generation embedded directly within Salesforce ERP

検索インテント分析実務検証済みFAQ • 2026年10月

Sign.Plus (Alohi) に関するよくある質問（料金・導入・機能）

What is the pricing for Sign.Plus and what does the free plan include? ▼

Sign.Plus provides a Free plan that allows you to sign up to 3 documents. Paid commercial plans start at $7.99/month (Personal) and $14.99/month (Professional, including reusable templates and advanced audit logs), with Business and Enterprise plans for teams.

Are electronic signatures created with Sign.Plus legally binding in court? ▼

Yes. Sign.Plus signatures comply fully with the European Union eIDAS regulation, the US ESIGN Act, and UETA, creating court-admissible, tamper-evident cryptographic audit certificates for every signed document.

How does Alohi ensure data privacy and Swiss security standards? ▼

Alohi is headquartered in Switzerland and maintains SOC 2 Type II and ISO 27001 certifications. All documents are encrypted with AES-256 at rest, and enterprise users can mandate Swiss data residency.

How do Sign.Plus and companion Fax.Plus work together? ▼

Both tools share a unified Alohi account and security infrastructure, allowing companies in legal, healthcare, and finance to execute digital contracts and send encrypted faxes from a single interface.