Click-Through Rate the cleanest engagement signal email gives you

Why CTR beats open rate

Open rate is measured by a tracking pixel that fires when an email is rendered. Apple's Mail Privacy Protection (2021) and similar features pre-fetch pixels whether the user opened the message or not. That broke open rate as a reliable signal. A click, on the other hand, is a deliberate action. Somebody read enough to want more. That's a higher-fidelity signal of actual engagement.

CTR vs CTOR

Two different metrics, often confused. CTR uses delivered as the denominator (clicks divided by everyone who got the email). CTOR uses opens (clicks divided by people who opened). CTR tells you how the whole list responded; CTOR tells you how the openers responded. Since opens are now unreliable, CTR is the safer single number to track over time, with the caveat that a click-by-bot can also inflate CTR (some corporate security tools click every link in incoming mail to scan it).

What's a good CTR?

Honestly, "good" depends entirely on the email type. Transactional mail (OTPs, receipts) has low CTR by design — the user often doesn't need to click anything. Marketing campaigns to engaged lists land somewhere in the low single digits as a rough sanity floor. The number that matters more than industry benchmarks is your own CTR trend over time. A drop from 4% to 2% on the same list is meaningful. Comparing your campaign to "industry average 3.2%" is mostly noise.

How CTR connects to deliverability

CTR is also a deliverability signal mailbox providers watch indirectly. High engagement (opens, clicks, replies) tells Gmail and Outlook that your mail is wanted, which feeds into your sender reputation. Low engagement on a domain that sends a lot tends to push more mail to the spam folder over time. So CTR isn't only a marketing metric. It quietly affects whether your next campaign lands in the inbox.

How sendmsg.io handles click tracking

Click tracking works by rewriting outbound links to a tracking endpoint that records the click and then 302-redirects to the real destination. We surface CTR per send and per recipient in the dashboard, and the reputation engine factors engagement signals into the inbox-placement picture. If you want bot-click filtering or to disable tracking on certain transactional mails, that's configurable.

Want to see where your sending stands today? The free deliverability check audits your SPF, DKIM, DMARC, and MX in seconds.