Quantivex Ltd delivers secure, compliance-first messaging infrastructure and API-first communication gateways for SaaS platforms, financial institutions, and enterprise software providers across the United Kingdom and Europe.
Founded in 2021, Quantivex Ltd is a London-based data and communication infrastructure provider specialising in resilient SMTP routing, API gateway architecture, and compliance-led transactional messaging systems.
Registered Office: 52 Lime Street, London, EC3M 7AF, United Kingdom
Company Number: 13976428
VAT Number: GB458293716
Telephone: +44 20 3978 6624
Email: support@quantivex.co.uk | sales@quantivex.co.uk
We support SaaS platforms, financial services organisations, FinTech providers, enterprise software vendors, and regulated professional services requiring secure, auditable communication infrastructure.
From £289 per month
Up to 1.4 million messages
Custom contractual agreements
Dedicated IP allocation & compliance review
Comprehensive API references, SMTP configuration guidance, authentication setup instructions, and structured compliance onboarding documentation are provided following approval.
No unsolicited bulk email is permitted under any circumstances.
| Domain | Status |
|---|---|
| clientservices.co.uk | Authenticated |
| enterpriseapp.io | Pending Verification |
Daily API call volume trend (simulated)
| Date | Activity |
|---|---|
| 24 Feb 2026 | Compliance audit completed |
| 23 Feb 2026 | Domain authentication verified |
| 22 Feb 2026 | IP reputation monitoring check passed |
Quantivex Ltd processes personal data in accordance with UK GDPR requirements and maintains appropriate technical and organisational safeguards to ensure confidentiality, integrity, and lawful processing.
All accounts are subject to manual compliance review and identity verification prior to activation. Clients must adhere to all applicable UK and international communication regulations.
Unsolicited messaging, purchased contact lists, and unauthorised bulk distribution are strictly prohibited. Quantivex enforces immediate suspension for policy violations.