Email marketing glossary

Stay current with the latest email marketing terms.

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Schema markup

Schema markup, also known as structured data, is code used to provide clear information to search engines, like Google, so they can parse senders’ content. Brands use it to boost...

Semantic HTML

Semantic HTML, also known as semantic markup, is a way of writing HyperText Markup Language (HTML) code that makes it easily human- and machine-readable. Brands use HTML tags to label...


A Short Message Service (SMS) is a mobile text message of up to 160 characters. Brands use SMS in marketing in similar ways to email communication. They even personalize follow-up...


SMTP, which stands for Simple Mail Transfer Protocol, is an internet standard responsible for getting emails from one place to another. It takes an outgoing message via an SMTP port...