Productivity & Collaboration
Design an Enterprise Email System (Gmail clone)
A high-volume mail platform handling SMTP ingestion, spam filtering, and full-text search across mailboxes at massive per-user storage scale.
Open and Simulate this Architecture in InfraDraftCore Architectural Components
SMTP Ingestion/Relay Service
Accepts inbound mail and routes outbound mail per standard SMTP.
Spam/Phishing Filtering Pipeline
Scores and filters incoming mail before it reaches an inbox.
Mailbox Storage Service
Per-user partitioned storage designed for enormous individual mailbox sizes.
Full-Text Search Indexing Service
Makes years of mail instantly searchable.
Attachment Object Storage
Stores large attachments separately from message metadata.
Label/Thread Organization Service
Groups related messages and applies user/auto labels.
IMAP/API Sync Protocol Layer
Keeps multiple clients (web, mobile, desktop) in sync.
Delivery Retry & Bounce Handling
Manages outbound delivery failures per SMTP semantics.