Mass sending email

Hello!

I would like to set up a mass mailing of letters through ZOHO, but as I understood in free version there are no such options and it is necessary to buy minimum "standard" version, isn't it?

For today in our account there are three users in free version, is it possible to buy for 1 user standart version and do mass mailing, but two users left at free version?

I am looking forward to your answer!

Best regards, Dmitriy