Very few brands have chosen to use annotations and schema to enhance their email campaigns' envelope content. Now it's being automatically applied by Gmail and Yahoo with mixed results at best.

With accessibility and inclusive design becoming major digital marketing design trends, the emphasis on making email campaigns more voice-friendly has grown. However, doing so is not without some contradictions and compromises.

These 16 email marketing technologies and tactics are considered by Oracle Digital Experience Agency’s experts to be Proven Essentials–that is, high adoption-high impact trends that every brand must master.