When it comes to sending cold SMS messages to potential new customers, it's important to be mindful of best practices to avoid coming across as spammy or intrusive. Here are a few tips:

Personalize your message: Use the recipient's name and reference their specific needs or interests to make your message more relevant and personalized.

Keep it short and sweet: SMS messages have a limited character count, so make sure your message is concise and to the point. Avoid using complex language or industry jargon.

Provide value: Offer something of value in your message, such as a limited-time discount or a free trial. This will make your message more enticing and increase the likelihood of a response.

Make it easy to opt-out: Include clear instructions for how the recipient can opt-out of future messages if they're not interested.

As for the number of messages you should send, it's best to start with a small number and gradually increase over time if you're seeing positive results. Keep in mind that sending too many messages too frequently can turn off potential customers and harm your brand reputation and ultimately your number will be marked as spam by carriers. It's important to strike a balance between reaching out to new customers and respecting their privacy and preferences.