Email Cadence: How Often Should You Email Customers?

Why It Matters

Finding the right cadence directly impacts revenue‑critical metrics like open, click‑through, and unsubscribe rates, shaping a brand’s deliverability and customer loyalty. Consistent, data‑driven cadence decisions give ecommerce firms a competitive edge in a crowded inbox environment.

Key Takeaways

• Twice‑weekly cadence yields highest CTR (5.8%).
• Daily emails lower open rates, increase unsubscribes.
• Consistency cuts unsubscribe rates by half.
• Transactional emails must be immediate.
• Segment audiences for tailored frequency.

Pulse Analysis

Email cadence remains a cornerstone of ecommerce marketing, yet it’s often treated as guesswork. Recent data from MailerLite, covering more than a million 2024 campaigns, reveals a clear sweet spot: sending two targeted emails per week maximizes click‑through rates at 5.8% while preserving open rates near 34% and keeping unsubscribe rates under 0.5%. Daily sends marginally improve CTR but erode open rates and inflate opt‑outs, and irregular patterns can double unsubscribe risk. These findings give marketers a quantifiable benchmark to calibrate their outreach.

Beyond raw frequency, the type of email and audience segmentation dictate cadence nuances. Transactional messages—order confirmations, shipping updates—must be dispatched instantly, while welcome series can taper after the first week. High‑interest niches, such as hobbyist communities, may tolerate more frequent newsletters, whereas high‑ticket items benefit from a restrained rhythm. Leveraging advanced email platforms enables real‑time list management, personalization, and AI‑driven send‑time optimization, helping brands navigate privacy‑induced metric distortions like inflated open rates from Apple’s Mail Privacy Protection.

Practical implementation hinges on disciplined testing and seasonal agility. A/B experiments that vary send intervals—24 versus 48 hours for post‑purchase offers—reveal optimal timing for each segment. During peak events like Black Friday, brands can temporarily shift to a “hyperdrive” cadence, delivering multiple messages per day without harming long‑term engagement. As inbox competition intensifies, continuous cadence refinement, grounded in robust analytics, will be essential for sustaining customer attention and driving conversion growth.