Dos and Don'ts :

1. Important: Do NOT send messages which get you a report. As long as you don't get reports from users who you sent a message, your account will be mostly fine.
2. Having real content, a survey that the person agreed with is different than a marketing message on a Saturday night.
3. Send messages written in different ways, you could make a script that places spacebars randomly on your string AND includes the person's (first) name.
4. Never use fixed times, always go for sending the first message, wait a random time between 30 ~ and 60 seconds and then send the second message.
5. Always try to group contacts by their area code, WhatsApp expects a regular person to talk mostly with contacts that are within the same area of your phone number.
6. Have a profile picture, this is not related to WhatsApp Bots Catcher® but sending a new message for someone not having a picture/name/status will elevate your chances of being manually tagged as spam.
7. Send "seen" confirmation to messages or disable it on WhatsApp.
8. Avoid sending links that were previously marked as spam on WhatsApp or non-HTTPS. A URL shortener is a good idea.
9. IMPORTANT: It's really bad if you send messages 24/7 without giving it some time to wait. Random delays between messages are not enough, send a reasonable amount of messages keeping in mind your conversion rate, For example: for one hour send a maximum of 4 messages per contact that have replied to your message, and stop sending messages for one hour, then start again. Again, don't send messages without stopping for a while between every "package".
10. Send only one short message when starting a conversation, one should not send long texts or multiple messages without the user consenting.
11. Avoid prefixes for messages.
12. Use spintax in messages like {hi|hello|hey}, {how are you?|nice to meet you |is a goo day}
13. spintax take random message to not send every time the same

Have in mind :

1. For every one you send a message that doesn't have your number on their contact list asked if it's spam, being tagged as spam a few times (5 - 10) will get you banned.
2. WhatsApp records every movement you do, you can even check the logs when sending simple support email, it contains all kinds of information, this said: act as human as possible.
3. Try to engage in conversations, as long as you send a message and the person doesn't automatically block you it'll be quite okay. People constantly talking to you and adding you to their contact list will make your number stronger against a ban.
4. Think about that like a points system, you start with zero points (negative if your device was previously blacklisted), if you reach below zero you are out, if you engage in conversations you get a point, if you are tagged as spam you lose some points, if you are blocked you may lose more points.
5. Finally, If your content is spam, it doesn't matter if you are using a broadcast list, group, or direct contact, you will still be banned.

As API providers we say all that's left to do right now is agree with WhatsApp's policy, not send spam messages, and always wait for the other person to contact you first. You could make it by sending an SMS to the person with a link to start a chat on WhatsApp with you.

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