Deliver your messages with military-grade encryption and 99.99% uptime guarantee. JSMailbox provides the robust infrastructure that powers thousands of businesses across the UK and beyond, ensuring every communication reaches its destination securely and instantly.
Get StartedOur multi-layered security stack employs real-time AI filtering to block 99.97% of phishing attempts and zero-day malware before they reach your inbox. Every message undergoes SPF, DKIM, and DMARC authentication verification, while our sandboxed attachment scanning isolates suspicious files in secure virtual environments. We maintain continuous threat intelligence feeds from leading cybersecurity agencies to ensure your organization stays protected against emerging attack vectors.
JSMailbox operates Tier III+ data centers across London, Manchester, and Frankfurt, featuring N+1 redundancy on all critical systems including power, cooling, and network connectivity. Our anycast DNS routing automatically directs traffic to the nearest healthy node, reducing latency to under 45ms for European users. Each facility maintains ISO 27001 certification and utilizes enterprise-grade Dell EMC storage with RAID-10 configurations and battery-backed write caches to prevent data loss during power events.
Seamlessly synchronize email, calendars, and contacts across all devices using native Microsoft ActiveSync, modern IMAP4 with IDLE support, and open standards including CalDAV and CardDAV. Our proprietary sync engine resolves conflicts intelligently, ensuring that changes made offline propagate correctly when connectivity resumes. We support Outlook 2016+, Apple Mail, Thunderbird, and all major mobile platforms with dedicated configuration profiles that enforce TLS 1.3 encryption for all data in transit.
Manage your entire organization through our comprehensive web-based control panel, featuring role-based access controls that allow delegation of specific permissions to department managers. Implement organization-wide email policies including retention schedules, attachment size limits, and acceptable content filtering with regex-based rules. Our administrative API enables automation of user provisioning through SCIM 2.0 protocol, allowing seamless integration with your existing identity provider and HR management systems.
Meet regulatory requirements with our immutable WORM (Write Once Read Many) archiving system that maintains tamper-proof copies of all communications for durations you specify, supporting GDPR, FCA, and MiFID II compliance mandates. Our eDiscovery portal allows legal teams to perform complex Boolean searches across millions of messages in seconds, with export capabilities to PST or EDRM XML formats. All archived data is encrypted at rest using AES-256 keys stored in hardware security modules with FIPS 140-2 Level 3 certification.
Access our Manchester-based support team around the clock through phone, live chat, and priority email ticketing with guaranteed 15-minute response times for critical issues. Our engineers hold industry certifications including MCSE, RHCE, and CISSP, bringing deep expertise in mail server architecture and DNS troubleshooting. We provide proactive monitoring of your domain's reputation and deliverability metrics, alerting you immediately to any blacklisting issues or authentication configuration problems that could impact your business communications.
Join thousands of organizations that trust JSMailbox for their critical email infrastructure. Upgrade your email experience with enterprise-grade security, guaranteed uptime, and expert support that keeps your business connected around the clock.
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