Never Update the Column

If you have DB column which you want to be set only once and never updated again, you can set that restriction on Eloquent Model, with a mutator:

• In version 9 and above:

use Illuminate\Database\Eloquent\Casts\Attribute;
 
class User extends Model
{
    protected function email(): Attribute
    {
        return Attribute::make(
            set: fn ($value, $attributes) => $attributes['email'] ?? $value,
        );
    }
}

• In version 9 and below:

class User extends Model
{
    public function setEmailAttribute($value)
    {
        if (isset($this->attributes['email']) && ! is_null($this->attributes['email'])) {
            return;
        }
        $this->attributes['email'] = $value;
    }
}