Email Open Rate
Email open rate is the percentage of people who open an email out of everyone who received it. If you send a campaign to 1,000 people and 250 open it, your open rate is 25 per cent. Marketers use open rate to gauge how well a subject line and sender name capture attention, since those are the first things a recipient sees in their inbox. It’s worth knowing that open rate isn’t always exact, because it usually relies on a tiny invisible image loading in the email, and some inboxes block or preload these in ways that can over- or under-count opens. For that reason, open rate works best as a guide to trends over time rather than a precise figure, and it’s most useful when read alongside other metrics like click-through rate.
See also: Bounce rate, Click-Through-Rate (CTR)
Further reading: KPIs for Copywriters: How do Measure Copywriting Success?
