Who had the experience of mass information mailing using Telegram MTProto?

Question

Telegram

In general, we are going to automate the business process for interacting with our counterparties. We are implementing an unofficial telegram client for sending informational (non-advertising) notifications to our counterparties. There will be up to 300 such notifications per day. The counterparties themselves have agreed in our crm for mailing. Those. they themselves will not send us to spam, because these notifications are important to them. We are worried that Telegram itself may consider this spam and permanently ban the account. I would like to ask those who did such mass mailings of information messages in telegrams. Were there any problems with the ban, is it worth notifying [email protected] in advance that the mailing will be informational. I read their API usage policy, it says that spam, flooding is prohibited. But their concept of spam is vague and, perhaps,