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:

 1use Illuminate\Database\Eloquent\Casts\Attribute;
 2 
 3class User extends Model
 4{
 5    protected function email(): Attribute
 6    {
 7        return Attribute::make(
 8            set: fn ($value, $attributes) => $attributes['email'] ?? $value,
 9        );
10    }
11}

• In version 9 and below:

 1class User extends Model
 2{
 3    public function setEmailAttribute($value)
 4    {
 5        if (isset($this->attributes['email']) && ! is_null($this->attributes['email'])) {
 6            return;
 7        }
 8        $this->attributes['email'] = $value;
 9    }
10}