When and why to use a proxy

The main reason to use a proxy is working with a large number of accounts. If you have up to 10 accounts, you may not need a proxy.

Key points to pay attention to: 1) During registration. If you register many accounts on a single proxy within a short time, WhatsApp will block the IP and won't let you register more. This is standard protection in any similar service or social network. If, for example, you register one account a day on the same proxy, the block either won't happen at all or won't happen for a long time. For mass registration you should use a proxy.

2) During warm-up. For chats between accounts or any other warm-up:

• You can take 1 mobile proxy and keep all emulators on that proxy. This can work with a mobile proxy because its external IP will rotate.
• If in the previous case the accounts get banned heavily during warm-up, or warm-up doesn't deliver results, give every emulator its own proxy — or take 2 proxies but configure it so that during chats each emulator is on its own proxy.

3) During broadcasting. Same as point 2. You can either keep all emulators on a single proxy or set up a separate proxy for each. You can also bind a proxy to an account, or configure it so that at any given moment all accounts are on different proxies. If the accounts are warmed up and have trust, you can run about 500 accounts on 1 IP with no difference from using a separate proxy for each.

An IP block is far from the only criterion for bans. Using a proxy gives you no 100% guarantees. On top of that, proxies themselves come in different quality levels.