An interesting service. At first, I had doubts about its legitimacy, but after a more thorough examination, it became clear that everything is fine. The developers work with the official VK API, which confirms the legality of its use. According to VK's rules, subscribers either agree to receive messages or subscribe to the group's newsletter, so it's impossible to accuse them of spam. I tested the service for free; there is a plan for 150 messages a day, but that turned out to be insufficient for my group, so I chose the Gold plan for 600 rubles a month, which allows sending up to 10,000 messages. For small groups, especially in the beauty industry, even 150 messages can be useful for informing the audience. I recommend that administrators of such groups pay attention to this service while there is an opportunity for free use, as conditions may change in the future. The mailing works great: in the personal account, you can create messages, make them unique, schedule sending, attach files, and track statistics. All messages are delivered, and there are no undelivered ones. As for open rates, that depends on the individual; the service guarantees only delivery. Overall, I actively use Senler and have no complaints about it.
