CPM

The percentage of recipients who unsubscribe from an email after it is sent. In large-scale marketing, some unsubscribes are expected, but it’s a metric that can be monitored to ensure you aren’t putting off your audience with either the frequency or messaging of your email advertising.

An SSL Certificate is a digital certificate that authenticates a website with browsers and search engines, and allows the site to have an encrypted connection. A lapsed certificate license will usually result in a loss of traffic as warnings for users block entry to the site.

B2B stands for Business to Business. It refers to businesses whose services or products are intended for other businesses, rather than direct to individual customers (B2C). Some industries, such as financial services, can be both B2B and B2C depending on the type of services being offered.