'greetings', 'regards', 'best', 'sincerely', 'cheers', 'hello', 'hi', 'concern', 'dear', 'morning', 'afternoon', 'evening', 'happy', 'thank you', 'thanks', 'appreciate', 'please', 'request', 'inquiry', 'follow-up', 'update', 'reminder', 'as discussed', 'reference', 'confirm', 'required', 'attachment', 'enclosed', 'fyi', 'information', 'see', 'review', 'approval', 'notice', 'attention', 'deadline', 'priority', 'urgent', 'immediate', 'schedule', 'meeting', 'call', 'phone', 'conference', 'video', 'webinar', 'invitation', 'invite', 'rsvp', 'participation', 'agenda', 'minutes', 'summary', 'report', 'draft', 'proposal', 'plan', 'strategy', 'goal', 'objective', 'target', 'task', 'action', 'deliverable', 'milestone', 'timeline', 'roadmap', 'status', 'progress', 'completion', 'pending', 'overdue', 'reschedule', 'response', 'attached', 'thoughts', 'advance', 'email', 'details', 'inform', 'reminder', 'conversation', 'confirm'