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Growth · March 20, 2017

Wild Duck IMAP server

Distributed open source IMAP server built on Node.js+MongoDB

Wild Duck IMAP server launched on March 20, 2017 with 3 votes. The site was still online in September 2026, 9 years on.

What it does

WildDuck is a scalable no-SPOF IMAP/POP3 mail server

WildDuck is a modern IMAP/POP3 server built on Node.js and MongoDB. Bundle it with Haraka (inbound SMTP) and ZoneMTA (outbound SMTP) for a complete mail server. Best suited for 1000+ accounts that need horizontal scaling. For smaller setups, consider Postfix+Dovecot . Everything is stored in MongoDB with sharding support. All instances are stateless — add more behind a load balancer to increase throughput. First-class IMAP4rev1 with IDLE, CONDSTORE, COMPRESS, SPECIAL-USE, UTF8, QUOTA, and more. Any email client should work out of the box. Full support for internationalized email addresses, folder names, and headers. андрис@уайлддак.орг is a valid address. Manage everything via REST API —…from docs.wildduck.email

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