NodeBB plugin - Email whitelist

Allows you to specify patterns for an email address domain whitelist during registration and email modification.

The pattern system actually allows blacklists as well :D

Syntax cheat sheet

• Whitespace separated patterns (e.g. newline).
• * - wildcard (no sub-domains).
• ** - deep wildcard (matching sub-domains).
• ! - negates pattern (needs to be at the beginning).
• The last matching pattern decides; allow email address if positive, disallow if negative pattern.

Examples

Comments (shown with //) are not allowed within the actual syntax.

Simple whitelist:

email.example.com  // Allow email.example.com
email.*.example.com  // Allow email.XYZ.example.com
**.email.abc.example.com  // Allow email.abc.example.com and all (deep) sub-domains
!email.abc.example.com  // Deny email.abc.example.com (sub-domains are still allowed)

Blacklists using negative patterns:

**  // Allow everything
!**.example.com  // Deny example.com and all (deep) sub-domains
email.example.com  // Allow email.example.com

Feature overview

Even complex filters depending on email domains are possible using the cheat sheet above.

See ns-matcher for details and all features; keep the domain-targeting options (e.g. . as sub-domain separator) in mind.