Cloze will automatically display birthday reminders on the Agenda. Each birthday reminder includes an email template that you can use to wish the person a happy birthday.
If a birthday is not set for a person you can edit their profile and add it.
1.) Tap on More (...) in the lower right of your screen on mobile (iOS/Android) and lower left on cloze.com.
2.) Tap on Settings
3.) Scroll down to the Assistant section and tap on Smart Suggestions to expand the section.