Mailspfchecker Laravel Package

Getting Started

• Install with composer require <vendor>/<package>:^1.0.7. Version 1.0.7 is the first release advertising Laravel 12 support, so pin at or above it if you are on Laravel 12 — earlier tags will fail dependency resolution against illuminate/*:^12.0.
• Look first at three places, in this order: the require block of the package's composer.json (to confirm the actual Illuminate constraint range and the minimum PHP version), the package service provider's register() and boot() methods (to see what is bound into the container and what is auto-discovered), and the published config file (to see which knobs you are expected to touch versus leave alone).
• Confirm framework wiring before writing any code: check bootstrap/providers.php (Laravel 11/12 style) or config/app.php for the provider, and run php artisan about to verify the package's service provider is actually loaded. A package that silently fails to register looks identical to a package with a broken API.
• First use case: publish the config (php artisan vendor:publish --provider="Vendor\Package\PackageServiceProvider" --tag=config), set the one or two environment variables the config references, then resolve the package's primary service out of the container once — in a tinker session or a throwaway route — and exercise the single simplest operation the README documents. Do this before integrating it anywhere real; it separates "installed" from "working".

Implementation Patterns

• Prefer constructor injection over facades. Resolve the package's service through the container in the constructor of your own class, or type-hint the contract if the package ships one. This keeps your code testable without booting the framework and survives the package swapping its facade accessor.
• Keep package configuration in config/ and read it via config(), never via env() outside a config file. This is the single most common way package integrations break under php artisan config:cache, which is standard in production deploys.
• Wrap the package's write operations in your own service layer. Packages that touch the database, filesystem, or an external API should sit behind one of your classes so that a future major version bump is a one-file change rather than a hundred call sites.
• Test against the package's extension points, not its internals. If it exposes events, register a listener in a test to assert the operation fired. If it ships a fake or an in-memory driver, use it in setUp(); if it does not, bind a mock of its contract into the container in your test case.
• Upgrade workflow for the Laravel 12 bump: raise your own constraint to ^1.0.7, run composer update <vendor>/<package> -W, then run the full suite plus a php artisan config:cache && php artisan route:cache cycle. Laravel 12 raises the PHP floor to 8.2 and moves Carbon to v3, so any package code or overriding application code that type-hints Carbon\Carbon return values or relies on pre-8.2 behaviour is the likeliest source of silent breakage.
• Queue and transactional work: if the package dispatches jobs or writes rows, decide deliberately whether your call site should be inside DB::transaction(). A package that dispatches on commit versus immediately is a behavioural difference you want to know about before production traffic finds it for you.

Gotchas and Tips

• Version constraints are the main upgrade trap. A sibling package or your own composer.json may still cap illuminate/support at ^11.0, which will silently hold the package back at an older tag. Run composer why-not <vendor>/<package> 1.0.7 to find the blocker rather than guessing.
• Config and route caching mask registration bugs. If something works locally but not in staging, run php artisan config:clear && php artisan cache:clear and re-check. Conversely, always validate with caches on before shipping — that is the state production runs in.
• Auto-discovery failures are quiet. If the provider is not in the package's extra.laravel.providers, you must register it manually. Symptom: class-not-found on the facade, or config() returning null for the package's keys.
• Do not edit the published config file in place across upgrades. Merge new keys in rather than overwriting the file; unpublished defaults change between minor versions, and a stale config is a frequent cause of "the new feature does nothing".
• Debugging: php artisan tinker plus app()->make() on the service is faster than adding log lines. For container questions, app()->getBindings() and the Container's resolved-instance list tell you whether the package bound what you think it did. If the package swallows exceptions internally, check whether it exposes a log channel or a debug flag in its config before reaching for a debugger.
• Extension points to check before forking: container bindings you can extend() or rebind in your own provider, macros registered on its classes, events it dispatches, and any Handler/Driver/Resolver interface it publishes. Most day-to-day customisation should go through one of these rather than a subclass.
• Laravel 12 support in a 1.0.x patch is a signal about the package's release discipline. The API surface is presumably unchanged, so treat this as a low-risk bump — but it also means the maintainers are treating compatibility as a patch, so pin with a caret and read the diff between your current tag and 1.0.7 if you are jumping more than one version.