

CUSTOMER STORY – IPSIP × MAILJET
Infrastructure migration and 24/7 operations for a system processing billions of emails
IPSIP Vietnam worked with Mailjet to advise on Cloud architecture, migrate infrastructure, and establish NOC and SOC teams, enabling the R&D team to focus more on product development.
Cloud Architecture
Infrastructure Migration
NOC 24/7
SOC 24/7

Business Context and Requirements
Infrastructure operations and security monitoring requirements were defined around the specific demands of a global email platform.
CUSTOMER PROFILE
M
Founded in 2010, Mailjet is a comprehensive Email Service Provider (ESP) that helps businesses send marketing and transactional emails.
120+
Employees
Global Team
17M€+
Funding
Successfully Raised
27 B+
Processed and Sent
Challenges to address
3 challenges directly affecting business operations
With large volumes of data and emails to process, Mailjet faced technical challenges involving operations and R&D resources.
Service disruptions
The system frequently became unavailable for several hours, disrupting operations and causing direct revenue loss.
Diverted R&D resources
Nearly 50% of the R&D engineering team had to assist with incident resolution. Operating costs increased from 30% to 45%, while each incident could take several days to resolve.
Delayed product development
Operational issues diverted the R&D team’s time, delaying the release of new features and resulting in significant commercial losses.

IPSIP Vietnam’s mission and solution
The solution combined Cloud infrastructure migration with a specialized operating model, helping Mailjet address both system challenges and R&D resource constraints.

01
Cloud architecture and infrastructure
Provided Hybrid architecture consulting and carried out the infrastructure migration.
Starting Point
Legacy Network
Mailjet’s existing network infrastructure.
Transition Architecture
Hybrid Architecture
Combined the existing infrastructure with the Cloud environment.
Destination
Google Cloud
The environment receiving the entire system.
01
Architecture consulting
Designed a Hybrid Cloud architecture combining the Legacy Network with Google Cloud.
02
Infrastructure migration
Safely migrated the entire system to Google Cloud while minimizing downtime.

02
SOC/NOC operations team structure
Specialist technical resources were organized by responsibility.
Coordination Center
IPSIP Operations Team
MONITORING
NOC team
Network operations center
ADMINISTRATION
Senior Administrator
Senior system administration
SUPPORT
IT Helpdesk
L1–L3 technical support
WORKSTREAM 1
Customer support
Received and resolved operational incidents reported by end users on Mailjet’s behalf.
WORKSTREAM 2
Infrastructure engineering
Managed and proactively monitored the system 24/7 while handling incidents affecting the underlying infrastructure layer.

Key metrics and Outcomes
Results were recorded across three areas: system stability, incident resolution time, and the R&D team’s ability to focus on product development.
SYSTEM AVAILABLE
100%
Email delivery system uptime SLA
A 100% Uptime SLA was recorded for the email delivery system within the scope of the project results.
INCIDENT HANDLING
A FEW MINUTES
Incident resolution time
Incident resolution time was significantly reduced compared with the period before the new operating model was implemented.
Before: Several days
After: A few minutes
R&D FOCUS
100%
R&D team focused on development
Mailjet’s entire R&D team was freed from operational incident handling to focus on developing new services.

Why did Mailjet choose IPSIP Vietnam?
The project required a partner capable of advising on architecture, migrating infrastructure, and establishing continuous system operations. IPSIP Vietnam met these requirements through an end-to-end delivery model covering Cloud infrastructure and technical support.
Cloud architecture and implementation expertise
IPSIP Vietnam advised on Hybrid Cloud architecture, connected Mailjet’s existing network to Google Cloud, and directly carried out the infrastructure migration. Explore IPSIP’s Cloud Capabilities
Support from migration to operations
IPSIP Vietnam not only performed the migration but also continued to monitor, administer, and support the system after the transition.
Multi-tier technical team
The delivery model combined the NOC team, senior system administrators, and L1–L3 IT Helpdesk, assigning the appropriate resources to each type of issue.
Continuous 24/7 operations and support
The IPSIP team proactively monitored infrastructure 24/7 while receiving and resolving end-user operational issues on Mailjet’s behalf.
Strong and trusted cybersecurity protection
IPSIP combines the expertise of its security team with a solution ecosystem from SentinelOne, CrowdStrike, Fortinet, and Sekoia. Based on the required scope, suitable solutions are selected to support security monitoring and the detection and management of threats to business systems.
This approach strengthens data protection, supports stable operations, and improves response capabilities when security risks emerge.

TELL US ABOUT YOUR PROJECT
...And our team will:
Review your request within 1–2 business hours.
Provide a detailed proposal based on your project’s specific scope and requirements.
Arrange an in-depth call to discuss your project and finalize the most suitable approach.
Sign the service agreement and officially launch the project with you.
Don’t have specific requirements yet but want to learn more about our capabilities? Visit About IPSIP Vietnam to discover more about our team’s expertise.
