dominicsayers/isemail
Fast, standards-focused email address validation for PHP. Implements detailed RFC/SMTP rules with configurable thresholds, helpful diagnostics, and options beyond simple regex checks—useful when you need accurate, nuanced validation in Laravel or any PHP app.
The package is a standalone PHP email validation library targeting specific RFCs but shows significant maturity concerns. Architecture fit is moderate—Laravel can integrate it via Composer as a custom validator, but its standalone nature requires manual wrapping in Laravel's validation system. Integration feasibility is technically straightforward (add via Composer, create a custom rule), but
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