I absolutely do not recommend getting involved with the FRAUDULENT service sms.ru. I made a payment (1000 rubles), after which I found out that the mailing is only possible to a maximum of 10 numbers per day. To increase the limit, they require written permission for sending to subscriber numbers. I asked for a refund, and then they disappeared and stopped responding to my questions and requests. Use other services!!! They deducted the entire amount without returning it, they do not respond to inquiries, and the support phone number listed on the website does not work. Pure FRAUDSTERS!!!