Home - HubSpot Email Marketing - Which form of email authentication attaches your brand’s logo to your messages to authenticate your emails? Which form of email authentication attaches your brand’s logo to your messages to authenticate your emails? 2shares Facebook Twitter Pinterest LinkedIn Skype Facebook MessengerQuestion: Which form of email authentication attaches your brand’s logo to your messages to authenticate your emails? DMARC BIMI DKIM ESP The right answer was: BIMI