Unsubscribes

What are unsubscribes?

Unsubscribes measure the number of recipients who opt out of your email list. Tracking this metric tells you whether your content, cadence, and audience fit are working.

Why this KPI matters

A steady trickle of unsubscribes is normal as lists evolve. What you want to catch early is a spike, because spikes point to message misfires, poor targeting, or audience fatigue.

Managing your Unsubscribes rate protects deliverability, improves engagement, and keeps your paid acquisition from carrying the full load of list growth.

Reporting frequency: Monthly

Example target: 2% unsubscribe rate

Audience: Marketing Manager

How to calculate unsubscribes

The standard formula divides unsubscribes by total subscribers:

Unsubscribe Rate = Unsubscribes / Total Subscribers

Most teams also track a per-send rate alongside the overall list rate:

Per-Send Unsubscribe Rate = Unsubscribes / Emails Delivered (per campaign)

Use both for a complete picture.

Calculation tips

• Use delivered, not sent, for per-send rate. Exclude bounces from the denominator so the math reflects real recipients.

• Segment by source and campaign type. Lifecycle flows, promotions, and newsletters behave differently and shouldn't be averaged together.

• Use rolling windows. All-time totals hide current problems. A 7-day or 30-day window surfaces trends faster.

Data you need

• Subscriber list with join date and source

• Campaign sends with delivered, opens, clicks, unsubscribes, and complaints

• Template and topic tags for analysis

How to reduce unsubscribes

• Set expectations early. Tell subscribers what you send and how often, then meet that promise.

• Offer frequency controls. Let people switch to weekly or monthly digests instead of leaving entirely.

• Clean your list. Sunset unengaged contacts after a fair win-back attempt. A smaller, engaged list outperforms a large, disengaged one.

• Send useful content. Tie messages to customer goals and lifecycle stages, not just promotions.

• Target carefully. Segment by behaviour and past purchases. Stop sending everything to everyone.

Common pitfalls

• Forcing logins to unsubscribe. Friction raises spam complaints. Keep the opt-out path easy.

• Counting spam complaints as unsubscribes. Track them separately and escalate quickly if they rise.

• Ignoring per-send data. A low overall rate can mask a single campaign that drove heavy opt-outs.

Track unsubscribes in Klips

Connecting your email service provider to Klips lets you move from static exports to a live view of list health.

• Connect your ESP. Pull sends and list events from platforms like Mailchimp, HubSpot, or SendGrid.

• Model your metrics. Calculate overall list Unsubscribe Rate, per-send rate, and 7-day and 30-day moving averages.

• Visualize trends. Use a line chart for trend over time, a bar chart broken down by template or topic, and a single-value Klip for the current month.

• Set alerts. Colour rules flag sends above your threshold. Add a table of outlier campaigns with subject lines for quick review.

• Share results. Send a weekly email digest to content and CRM owners so they can adjust topics and frequency before the next send.