- Germany, Munich
- United States, Texas, Austin
- Shopify
- Shopify Plus
- North America
- Europe
- Implementation & Onboarding (Platform migration, Klaviyo implementation.)
- Strategy & Consulting (Technology roadmapping, system integration planning, and Klaviyo + digital strategy.)
- Technical Development & Design (Custom integrations, site development, and platform-specific design.)
- Omnichannel Messaging (Lifecycle marketing across Email and Mobile Messaging (SMS, MMS, RCS, WhatsApp, Mobile Push)
- Data & Analytics (Advanced Klaviyo Data Platform (AKDP/CDP) implementation, Marketing Analytics, and data/segmentation strategy.)
- English
- German (Deutsch)
- Retail: Apparel & Beauty
- Retail: Food & Beverage
- Retail: Home & Electronics
- Retail: Outdoor & Automotive
- Retail: Subscriptions & Digital Goods
- $1M - $10M
- $10M - $30M
- $30M - $100M
- $100M - $500M
- Managed Services (Retainer): For brands looking for an outsourced team to handle ongoing, month-over-month execution
- Project-Based (One-time): For brands looking for a defined scope of work with a specific start and end date
- Consulting / Hourly: For brands that need expert advice or technical troubleshooting on an ad-hoc basis
RELAIN is a certified Klaviyo partner
RELAIN is a Klaviyo-first retention agency for 7–9 figure DTC brands. We grow repeat revenue through Email, SMS, WhatsApp, and Direct Mail – built as one connected CRM system, not isolated channels.
What makes us different: we replace discount-driven email with consumer psychology. Every campaign is built on behavioral data and proven triggers – scarcity, commitment, identity, effort justification – not templates and promo codes.
After 10+ years of CRM experience and 100+ brand partnerships, our clients see an average 14x ROI in 3 months, a 41% repurchase rate, and 34% of total revenue generated through CRM.
The full system: Email, SMS, WhatsApp, and Direct Mail layered with loyalty programs, referrals, subscription models, and financial analytics that tie CRM performance directly to LTV and contribution margin.
Our goal is simple: the right offer, at the right moment, through the right channel – every time.
Trusted by Foot Locker, Sony Music, SNOCKS and many more. Offices in Munich and Austin. We work with a maximum of 10 brands at a time.
"“RELAIN reviewed all of our CRM, email, and loyalty activities, provided extremely valuable recommendations for optimization, and transferred that knowledge directly to our team.”"