walletservice/app/Mail/BankAccountActivated.php

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
use App\Models\UserBankAccount;

class BankAccountActivated extends Mailable
{
    use Queueable, SerializesModels;

    public $bankAccount;
    public $bankName;

    public function __construct(UserBankAccount $bankAccount, $bank_name)
    {
        $this->bankAccount = $bankAccount;
        $this->bankName = $bank_name;
    }

    public function build()
    {
        return $this->subject(trans('emails.account_activated_subject'))
                    ->view('emails.bank_account_activated');
    }
}