Case studies
Palmer Hargreaves GmbH
Palmer Hargreaves GmbH builds scalable communications for agency clients
Palmer Hargreaves GmbH is a B2B communications, PR, and AI agency that develops strategic campaigns for clients like Nissan, Bilstein, and the City of Cologne. Email is a core part of that work, whether for newsletters, product announcements, or individual campaigns.
With Sinch Mailjet, the agency builds templates that match each client’s look and feel, and sends emails to validated contact lists across up to 19 markets.
As the number of parallel client projects grew, it became clear that efficient processes behind the scenes were essential to maintaining quality, speed, and consistency across all email communications.
For our agency work, we need a scalable and reliable tool that flexibly adapts to our clients’ needs, especially real-time data, multilingual support, growing send volumes, automatic resending, extensive personalization, and flexible layout options.”
Challenge: growing complexity in agency life
As its client portfolio expanded, Palmer Hargreaves GmbH faced several operational challenges.
Time-consuming campaign creation
Without standardized email templates, new campaigns often had to be built from scratch. This increased resource demands and slowed down execution.
Maintaining brand consistency
Managing multiple clients across global markets required careful attention to brand design, especially for last-minute email campaigns or product announcements.
Structured contact and data management
Handling separate email contact lists across different client projects demanded a high level of organization. Clear structures reduce effort and help ensure data privacy and quality.
The solution: structured processes for efficiency and control
Palmer Hargreaves GmbH built a centralized email setup using Sinch Mailjet’s core features to run campaigns efficiently, consistently, and at scale.
Reusable email templates as a brand kit
For each client, the team built modular email templates with defined design elements – headers, content blocks, and footers. New campaigns can be put together quickly without rebuilding the design or structure from scratch.
Brand communication stays consistent across all email campaigns, which speeds up both newsletter creation and last-minute product announcements.
CMS integration and automation
The Palmer Hargreaves GmbH marketing portal is connected directly to Sinch Mailjet via an interface integrated into Kentico. Portal users can create their own email campaigns, add personalized recipient information like product discounts, and either send campaigns automatically or adjust them manually.
This makes it possible to run pan-European campaigns efficiently and at scale, enabling a send volume of over 3 million emails per year.
Structured and segmented contact management
Sinch Mailjet’s contact management serves as the central foundation for organizing email contacts across client projects. Contact lists stay clearly separated. Depending on the campaign type, segmentation is handled either directly in Sinch Mailjet or in the marketing portal, making outreach more relevant and reducing administrative effort.
GDPR compliance is ensured throughout, and specific audience segments can be created for tailored client email communications.
API integration and reporting
Through the Sinch Mailjet API, sending processes are integrated into existing agency and client systems. Recurring communications like product updates or project-related information can be prepared efficiently and triggered directly from those systems, without manually starting each send in the tool.
For performance tracking, Palmer Hargreaves GmbH builds reports from API data to continuously monitor open rates, click rates, and overall campaign performance.
“Sinch Mailjet gives us reliable reporting. Since we work on a performance model, the precision of the data is critical for analysis and reporting.”
Results: efficiency gains across the entire workflow
The structured use of email templates, contact management, and API integration led to clear operational improvements:
- Faster campaign execution: Reusable templates speed up internal project work – new campaigns can be set up and launched more quickly.
- Better campaign relevance: Segmented contact structures enable targeted email communication.
- High process reliability: Standardized email templates reduce errors and cut down on coordination effort.
- Scalable campaign production: Growing send volumes can be handled efficiently across multiple client projects.
- Continuous performance monitoring: API-based reporting gives real-time insight into key campaign KPIs, including open rates, click rates, penetration rate, and bounce rate.
Looking ahead
The partnership between Palmer Hargreaves GmbH and Sinch Mailjet is built for growth. Building on their existing processes, the agency plans to evolve its email communications through new channels and data-driven optimization.
A key focus is expanding into RCS (Rich Communication Services) to reach recipients through more interactive formats. At the same time, structured A/B testing will help build a deeper understanding of audience preferences with the goal of measurably improving campaign performance.
“We’re very interested in working with Sinch Mailjet to push forward our expansion into RCS. At the same time, we’re running extensive A/B testing – from subject lines and preheaders to images versus animations and personalized email content. Our goal is to sustainably increase open and click rates.”
Conclusion: a strategic partnership for agency growth
By combining reusable templates, CMS integration, structured contact management, and API-powered automation, Palmer Hargreaves GmbH has standardized and scaled its email communications operationally.
The agency can now handle growing client demands efficiently while maintaining consistent, on-brand communication across all projects.
