Topic guide
Email marketing
Every glossary term attached to Email marketing, with the one-line answer for each.
Active contactWhy active and stored contact counts differ when comparing email platform pricing.Animated GIF in emailHow to preserve meaning, fallback behavior, and motion safety in an email GIF.Apple Mail Privacy ProtectionWhat MPP hides and why recorded opens need careful interpretation.Behavioral emailHow customer events select an email without changing its consent or message-purpose rules.Dark mode emailWhat dark appearance changes in email and which contrast failures merchants should test.Email alt textHow to write useful text alternatives for informative email images.Email client compatibilityHow to preserve readable content and usable actions across inbox applications.Hard bounceWhy a permanent delivery failure should stop retries without erasing contact history.Image blockingHow to keep an email understandable when its remote images do not load.Inline CSSWhat inline styles do, what they do not guarantee, and how to use them safely.Marketing emailHow primary purpose separates promotional email from transactional email.Email open rateThe open-rate formula and the privacy limits behind a recorded open.Opted outHow an opt-out records a channel and message preference, and how it differs from deletion.Outlook renderingHow Outlook presentation differs from delivery and which message parts merchants should test.Preheader textHow preheader text supplements a subject line without becoming an accidental preview.Responsive emailHow email layouts preserve reading order and usable controls on narrow screens.Soft bounceHow temporary delivery failure differs from a permanent hard bounce and why retries need limits.Suppressed contactWhy a contact can remain stored while a policy or delivery state blocks sending.SVG in emailWhere SVG can help, why browser support is not enough, and which fallbacks matter.Transactional emailHow primary purpose separates transaction updates from promotional email.UnsubscribedHow an email unsubscribe changes marketing eligibility without automatically deleting the contact.Web fontHow downloadable fonts differ from installed fonts and why email needs fallbacks.Web-safe fontHow installed fonts and fallback stacks keep email text readable.