Staff Stack
For Retention & Klaviyo Agencies

Ship More Campaigns Without Breaking Deadlines

StackCertified email builders, designers, QA specialists, and copywriters for retention agencies. Production capacity that actually ships.

Promise: Ship X campaigns/week with <Y% QA error rate

StackCertified email marketing operator working on Klaviyo campaigns

Email Operators Who Actually Ship

Our retention operators pass practical Klaviyo tests before placement. They build real flows, convert real designs, and execute real QA checklists — not just answer interview questions.

Every operator demonstrates AI-native workflows: using tools like ChatGPT for copy ideation, Claude for optimization suggestions, and automation tools to speed up repetitive tasks.

StackCertified Retention Roles

Every role has dedicated certification tests designed for retention agency work. Not generic — specific.

Klaviyo Email Builder

Build flows, campaigns, and segments in Klaviyo. Template development, A/B tests, automation setup.

KlaviyoHTML/CSSLiquidA/B Testing

Email Designer

Transform Figma designs into pixel-perfect emails. Responsive layouts, dark mode, accessibility.

FigmaEmail HTMLResponsive DesignDark Mode

QA Specialist

Links, rendering, UTMs, copy review, inbox testing. Catch errors before they reach inboxes.

Litmus/Email on AcidUTM AuditingRendering QACopy QA

Copywriter

Subject lines, preview text, body copy, CTAs. Conversion-focused writing for email and SMS.

Email CopySMS CopyA/B HeadlinesConversion Copy

Flow Strategist

Design and optimize automated flows: welcome, abandon, post-purchase, win-back, and more.

Flow ArchitectureSegmentationTiming OptimizationRevenue Attribution

SMS Specialist

SMS campaign management, compliance, segmentation, and performance optimization.

SMS PlatformsComplianceSegmentationPerformance

Problems We Solve

!

Campaign backlogs during peak seasons

Solution: Add certified email builders who can execute from briefs without hand-holding.

!

QA errors slipping through to clients

Solution: Dedicated QA specialists with checklist-driven processes catch issues before send.

!

Strategists stuck building emails

Solution: Free up strategists to focus on strategy while operators handle execution.

!

Can't say yes to new clients

Solution: Scale capacity without full-time overhead. Add operators as you grow.

Retention Certification Tests

These aren't generic assessments. Every operator passes retention-specific practical tests before placement.

Example Certification Tasks:

  • Build a 3-email abandoned cart flow in Klaviyo (45 min, timed)
  • Convert a Figma design to responsive email HTML
  • QA audit an email campaign: find 10+ issues
  • Write subject line variants and preview text for A/B test
  • Design a post-purchase flow with 5+ touchpoints

Ready to Scale Your Retention Output?

StackCertified retention operators, ready in 7 days. Ship more campaigns without more chaos.

Get Retention Operators