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Why are some WhatsApp broadcast message not delivered?

WhatsApp is the most popular messaging app globally, with over 2 billion active users. One of the key features of WhatsApp is the ability to send broadcast messages to multiple contacts at once. However, sometimes not all intended recipients receive the broadcast message. There are several potential reasons why WhatsApp broadcast messages may fail to be delivered to some contacts.

Reason 1: Recipient Has You Blocked

The most common reason a WhatsApp broadcast message won’t be delivered is if the intended recipient has blocked you. When you block someone on WhatsApp, you will no longer receive any messages or calls from that person. So if you have been blocked by one of the recipients in your broadcast list, they will not receive your broadcast message. There is no way to override this or make your message appear for blocked contacts.

Reason 2: Recipient Has Opted Out of Receiving Broadcast Messages

WhatsApp gives users the ability to opt out of receiving broadcast messages from specific people or groups. If someone has opted out from receiving your broadcasts, your messages will not reach them. The only way the broadcast will send to them again is if they opt back in to receive your messages. So always double check your recipients list and remove contacts who don’t want your broadcasts.

Reason 3: You Have Been Muted

If you have been muted by one of your broadcast recipients, your messages will not show up for that contact. Muting on WhatsApp stops notifications and messages from a particular chat from appearing. The broadcast will be sent from your end but just won’t ever reach the muted contact. They have to manually unmute the chat with you for your broadcasts to resume reaching them.

Reason 4: Recipient Phone Offline

WhatsApp requires the recipient phone to be online and connected to the internet to receive and display messages. If one of your contacts has their phone switched off, in airplane mode, or disconnected from the internet for a prolonged time, your broadcast won’t reach them. Once their device comes back online, queued messages will be delivered, including your broadcast.

Reason 5: You Have Been Deleted/Blocked by Recipient

If a recipient has deleted your chat or contact from their WhatsApp account, then your broadcasts will not reach them. Similarly, if they’ve blocked your number itself from their phone contacts, your broadcast message will not be delivered to that person. Deleting or blocking on the platform level prevents any messages, including broadcasts, from your number reaching them.

Limitations of WhatsApp Broadcast

WhatsApp has placed certain limitations on broadcast messaging to reduce spam and abuse. These technical limits can also sometimes prevent broadcast messages from reaching every recipient.

Limited to 256 Recipients per Message

WhatsApp caps broadcast lists to just 256 recipients per message. So if your recipients list is longer, it will have to be broken up into multiple broadcasts. This takes more time and opens the door for some contacts occasionally missing a broadcast if you accidentally leave them off one of the message batches.

Only Forwards 5 Times to Large Groups

Broadcast messages on WhatsApp can only be forwarded up to 5 times to large groups or chains before they stop sending. This prevents virality of false information. But as a side effect, your genuine broadcast might reach only portions of large groups if recipients further forward it.

Recipients Must Have Your Number Saved

Your broadcast will only successfully send to recipients who have your phone number saved in their contacts. If your number isn’t saved by a contact, your broadcast acts as a one-time text from an unknown number which does not show up for the recipient.

Limited to Sending 1 Broadcast per 15 Minutes

You can only schedule one broadcast on WhatsApp every 15 minutes. Any additional broadcasts during that time will queue and send later. This slows down the speed of sending time-sensitive broadcasts and can cause some recipients to miss seeing it in real time.

Limitation Maximum
Recipients per broadcast 256
Forwards of broadcast 5 times
Broadcast frequency 1 per 15 minutes

Tips to Ensure Broadcast Delivery

To maximize the chances of your broadcast messages reaching all intended recipients, follow these tips:

Regularly Update Your Broadcast List

Prune your broadcast list to remove contacts that have blocked you, opted out of messages, or changed numbers. Add recipients that need receiving the broadcasts. Keep the list current.

Break Up Large Lists into Smaller Batches

To avoid hitting the 256-recipient limit, segment your list into smaller subsets grouped by region, interest, language etc. Send as multiple targeted broadcasts.

Personalize Message Preview Text

Write compelling preview text for each broadcast instead of a generic “Hi” or “New message”. Recipients will be more likely to open and not ignore.

Send Critical Broadcasts Individually

For time sensitive messages, send one-to-one instead of broadcast. It reaches faster without group limits. Follow up with a broadcast summary.

Set Broadcast Reminder to Re-send

Schedule broadcast reminder to re-send message automatically after some time. This acts as a second chance for initially missed recipients.

Avoid Sending Too Frequently

Adhere to 1 broadcast per 15 minutes rule. Recipients get annoyed by too many broadcasts and may opt out.

Tip Purpose
Update recipient list regularly Remove blocked/opted-out contacts
Split into smaller batches Obey 256 recipient limit
Personalize preview text Encourage opening message

Conclusion

WhatsApp limits and individual user settings mean some recipients inevitably will not receive broadcast messages. However, following best practices around managing your broadcast list, crafting your message content, and leveraging built-in tools like reminders can help maximize the reach and limit misses. Periodic individual follow-ups on critical broadcasts can help cover any potential gaps. Ultimately by understanding the broadcast delivery challenges and limitations, broadcast creators can adapt their strategy to optimize for reliability.