# CodeCrew Inc > CodeCrew is a full-service email and SMS marketing agency averaging 1,300% ROI > for clients. Klaviyo Silver Master certified. Platform-agnostic across Klaviyo, > Salesforce Marketing Cloud, HubSpot, Braze, and more. 100% focused on email, > SMS, and retention marketing — not a generalist digital marketing agency. Co-founded by Alex Marin, Alexander Melone and Andrei Marin. 40+ specialists globally. Based in Concord, California (San Francisco Bay Area). One Percent for the Planet member. Serves ecommerce, DTC, and B2B brands across health and wellness, beauty, CPG, food and beverage, home improvement, outdoor, and professional services. ## Essential Pages - [Homepage](https://codecrew.us/): Core value proposition, services, client testimonials, and case study highlights - [Services](https://codecrew.us/services/): Full overview of email and SMS marketing services - [About CodeCrew](https://codecrew.us/about-codecrew/): Founding story, values, team, and approach to email marketing - [Case Studies](https://codecrew.us/email-marketing-case-studies/): 28+ client case studies with verified revenue and ROI results - [Platforms](https://codecrew.us/platforms/): Email and ecommerce platforms CodeCrew works across ## Services - [Email Marketing Strategy](https://codecrew.us/services/email-marketing-strategy/): ESP selection, lifecycle architecture, segmentation, A/B testing, and reporting - [Full-Service Email Marketing](https://codecrew.us/services/full-service-email-marketing/): Strategy, custom design and coding, copywriting, automation, and reporting - [Email Marketing Audit](https://codecrew.us/services/email-marketing-audit/): In-depth analysis of email programs covering design, deliverability, coding, compliance, and automations - [Email Design and Coding](https://codecrew.us/services/email-design-agency/): Custom email design and HTML development, mobile optimization, 50+ client QA - [Email Marketing Automation](https://codecrew.us/services/email-marketing-automation/): Lifecycle flow builds, ecommerce integration, behavioral triggers, and optimization - [Email Campaign Management](https://codecrew.us/services/email-campaign-management/): List management, segmentation, A/B testing, scheduling, and KPI reporting - [Email Campaign A/B Testing](https://codecrew.us/services/email-campaign-a-b-testing/): Test creation, data tracking, performance analysis, and iterative optimization - [Email Deliverability Services](https://codecrew.us/services/email-deliverability-services/): Deliverability audits, inbox placement testing, sender reputation monitoring - [Inbox Performance Tracking](https://codecrew.us/services/inbox-performance-tracking/): Send time optimization, engagement benchmarks, and workflow refinement - [Email Campaign Render Testing](https://codecrew.us/services/email-campaign-render-testing/): Cross-client rendering tests, functionality checks, and coding best practices - [SMS Marketing Agency](https://codecrew.us/services/sms-marketing-agency/): SMS strategy, email-SMS integration, platform setup (Klaviyo, Attentive, Twilio) ## Platform Expertise - [Klaviyo Email Marketing Agency](https://codecrew.us/platforms/klaviyo-experts/): Klaviyo Silver Master certified — flows, segmentation, deliverability, predictive analytics, Shopify integration - [Shopify Email Marketing Agency](https://codecrew.us/platforms/shopify-email-marketing-agency/): Klaviyo and Shopify integration, behavioral flows, ecommerce lifecycle programs - [Salesforce Marketing Cloud](https://codecrew.us/platforms/salesforce-marketing-cloud-consultant/): SFMC strategy, implementation, and campaign management - [HubSpot Email Marketing](https://codecrew.us/platforms/hubspot-email-marketing-specialists/): HubSpot email marketing, automation, and CRM integration - [Braze Email Marketing Agency](https://codecrew.us/platforms/braze-email-marketing-agency/): Braze campaign management and lifecycle automation - [Mailchimp Email Marketing Agency](https://codecrew.us/platforms/mailchimp-email-marketing-agency/): Mailchimp management and migration services - [Sailthru Email Marketing Agency](https://codecrew.us/platforms/sailthru-email-marketing-agency/): Sailthru email program management ## Results and Proof - [Email Marketing Case Studies](https://codecrew.us/email-marketing-case-studies/): 28+ case studies with verified revenue results — 700% QoQ growth (Semihandmade), 1,226% placed order rate increase (Inkjets.com), 527% Black Friday revenue increase (Oru Kayak), 127% placed order increase (Sitka Seafood Market) - [Client Video Testimonials](https://codecrew.us/video-testimonials/): Video reviews from current and former clients - [Email Design Portfolio](https://codecrew.us/email-marketing-portfolio/): Custom email design work across verticals and industries ## Optional: Education and Resources - [Email Marketing Best Practices](https://codecrew.us/learn/email-marketing-best-practices/): Best practices guide for email marketers - [Email Marketing Basics](https://codecrew.us/learn/email-marketing-basics/): Resource hub covering email marketing fundamentals - [Klaviyo vs Mailchimp](https://codecrew.us/blog/klaviyo-vs-mailchimp/): Comprehensive comparison of Klaviyo and Mailchimp for ecommerce brands - [Blog](https://codecrew.us/blog/): Email marketing insights, ESP comparisons, strategy guides, and industry analysis