Click-through rate (CTR)
Click-through rate (CTR) is the percentage of people who clicked a link out of those who received (or saw) the message. In email it is clicks divided by delivered emails; in ads it is clicks divided by impressions. CTR measures how compelling your content and call-to-action are at driving the next action.
How it works
Each tracked link is wrapped so clicks are attributed to the recipient. CTR is reported as unique clicks over delivered (or as click-to-open rate, clicks over opens, which isolates content appeal from subject-line pull).
Why it matters
CTR shows whether your message and offer actually motivate action, not just get opened. In cold outreach, heavy link use can hurt deliverability, so many senders minimize links early in a sequence and watch CTR mainly on later, warmer touches.
Which denominator should you use for email CTR?
Unique clickers divided by delivered emails gives CTR; unique clickers divided by unique opens gives click-to-open rate. They answer different questions, so label them clearly. With a hypothetical 1,200 delivered, 420 opens and 30 clickers, CTR is 2.5% and click-to-open rate is about 7.1%.
Because opens are inflated by image proxies, click-to-open rate is now unstable too: a jump in machine opens drags it down even when nothing about the email changed. For comparisons across months, CTR over delivered is the steadier figure.
Give each link its own label in the report. A message with a pricing link and a case-study link that shows a 2.5% CTR could have every click on pricing and none on the case study, and the blended figure would hide which one drew interest. Links placed in a sales sequence step also age: the same link in step four often performs differently from step one because the people still in the sequence are a narrower, less engaged group.
How do security scanners distort click counts?
Many corporate mail filters follow every link in an incoming message to check the destination before a person sees it. Each check can register as a click. The signs are clicks on every link in the same message, clicks within seconds of delivery, and clicks from recipients who never open or reply.
Treat a segment with those patterns as noise, in the same way you would treat machine opens. The difference between a scanner and a buyer usually shows up in what happens next: a buyer who clicks a pricing link often replies or books, and a scanner never does. The email tracking entry explains how clicks are recorded in the first place.
How many links should a cold email carry?
Fewer than most marketing emails. A first cold message with no link, or one plain link, looks like a note from a person, while three or four tracked links look like a newsletter to both readers and filters. If the goal of the first touch is a reply, a link competes with that goal.
Later steps can earn a link, for example a short case study or a booking page for someone who has engaged. The spam checker flags link-heavy drafts before they go out.
A booking link is the exception worth testing early for warm contacts. For someone who has already replied with interest, a link to a calendar removes a round of back and forth, and a click on it is a much stronger signal than a click on an article.
What does a click tell you that a reply does not?
Which offer caught interest. When two versions of a follow-up link to different resources, the clicks show which topic the audience cares about, even among people not ready to answer. Use that to decide the next message, not to score the contact as sales-ready. Autocloz reports clicks per link and per step, which is enough to compare offers without counting a click as a conversation.
How Autocloz handles it
Autocloz reports click activity per link and per step with safe, deliverability-aware link tracking, so you can see which offers pull clicks without letting excessive tracked links push your mail toward spam.
Free tools for this
No signup required — they run in your browser.
FAQ
What is the difference between CTR and click-to-open rate?
CTR divides clicks by delivered emails; click-to-open rate (CTOR) divides clicks by opens. CTOR isolates how persuasive the email body and CTA are, independent of how many people the subject line convinced to open.
Do links hurt cold email deliverability?
They can. Multiple tracked links or link-heavy content early in a cold sequence raises spam risk and lowers placement. Many senders keep the first touches link-light and introduce links once a reply or engagement signals trust.
Related terms
Lead enrichment is the process of automatically adding missing data to a lead or company record — job title, company size, industry, verified email, phone, LinkedIn, technographics — from third-party data sources, so reps can segment, personalize and prioritize without manual research.
An Ideal Customer Profile (ICP) is a description of the company that gets the most value from your product and is easiest to win and retain — defined by firmographics like industry, company size, revenue, geography and technology stack. It targets accounts (the company), distinct from a buyer persona, which describes the individual within the account.
Lead scoring is the practice of assigning a numeric value to each lead based on how well they fit your ideal customer profile (demographic/firmographic fit) and how engaged they are (behavioral signals like email opens, site visits, demo requests). The score ranks leads so sales works the hottest ones first.
A Marketing Qualified Lead (MQL) is a lead that has shown enough interest and fit — through behaviors like downloading content, attending a webinar or repeated site visits — that marketing deems it worth passing to sales for follow-up. It is more engaged than a raw lead but not yet vetted by a salesperson.