The Retention Lab

Playbooks From Real Accounts

No recycled listicles. Every post comes from a flow we built, a deliverability fire we put out, or a campaign we shipped this month.

Email
8 minApr 28, 2026

Why Your Open Rate Tanked In April (And How To Get It Back)

Apple MPP, Gmail's new sender requirements, and what 'engagement' means in 2026.

Klaviyo
11 minApr 21, 2026

Segmentation Beyond '90-Day Buyers': 14 Segments That Actually Convert

Behavioral, predictive, and lifecycle segments most teams miss—with build instructions.

SMS
9 minApr 14, 2026

TCPA Compliance For DTC: A Plain-English Guide That Won't Get You Sued

Consent language, quiet hours, opt-out handling, and the audit trail your lawyer wants.

WhatsApp
7 minApr 7, 2026

WhatsApp For E-commerce: When It Beats Email (And When It Doesn't)

Cost-per-message math, regional fit, and the 4 use cases worth the setup work.

Deliverability
10 minMar 31, 2026

Inbox Or Spam: The 12 Signals Gmail And Outlook Actually Score

DMARC, BIMI, sending velocity, complaint rate. The full scoring model demystified.

Retention
13 minMar 24, 2026

The CLV Equation: How To Add 90 Days Of Repeat Revenue Without New Acquisition

A repeatable framework for raising AOV, frequency, and lifespan in parallel.

Klaviyo
6 minMar 17, 2026

Browse Abandonment vs Cart Abandonment: Which Wins (And When)

Real revenue data from 40+ accounts. Spoiler: it depends on AOV.

Email
5 minMar 10, 2026

Dark Mode Email Design: 9 Mistakes Killing Your Click-Through Rate

Logo halos, invisible text, broken CTAs. With before/after fixes.

Retention
8 minMar 3, 2026

Loyalty Programs Don't Drive Loyalty. Here's What Does.

Why points programs fail and what behavioral mechanics replace them.

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