> For the complete documentation index, see [llms.txt](https://help.novatalks.com.ua/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.novatalks.com.ua/en/get-started/settings/inboxes/viber-by-phone/restrictions-and-limits.md).

# Restrictions and limits

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There are no limits from our service. However, we recommend reviewing the limits of the Telegram messenger for phone numbers.
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Sending limits depend on the level of trust Viber has in your number. 

**Recommendations for sending:** 

* If the number is new, blocking may occur after the 5th message per day. 
* If you haven't had any previous correspondence with your contacts, we recommend no more than 20 new dialogues per day. 
* If the client has replied to you at least once in the chat, there are no restrictions on sending. 
* If the client marks your message as spam, it can lead to blocking the number. 
* If your number has been blocked by Viber before, be aware of the limits as a new number to avoid being blocked again. 
* If your phone number was previously blocked, then changing your Viber number increases the chances of getting a block on your new number.

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Blocking may occur due to unusual activity on your number. To avoid this, do not exceed the limits for initiating messages and do not send spam.
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