Requirements

As enforced by composer.json:

Requirement	Constraint
PHP	`^8.4`
ext-openssl	`*` (webhook signature verification)
illuminate/console, contracts, database, http, mail, queue, support	`^12.0 \|\| ^13.0`
symfony/mailer	`^7.4 \|\| ^8.0`

Optional (suggested, not required):

Package	Purpose
`cboxdk/laravel-health` `^2.0`	Enables the `PostalConnectionCheck` health check

Tested against Postal 3.x (developed and verified against 3.3.7).