Blocking someone on WhatsApp can often feel cumbersome, especially since the standard procedure requires you to open the chat first. If you’re looking to block a sender without even glancing at their message, it can become somewhat tricky based on who has messaged you. This comprehensive guide presents the most effective methods to block someone on WhatsApp while bypassing the message preview entirely.
Reasons for Blocking a Sender Without Opening Their Message
Prioritizing your privacy and security on messaging platforms like WhatsApp is critical. Blocking someone without opening their chat is not merely a convenience; it serves as a proactive measure against various potential threats. Here are several compelling reasons to take this step:
- Prevent spam or harassing senders from receiving a read receipt, which could enable them to further aggravate you.
- Safeguard yourself from unknown senders who might send inappropriate or harmful messages or media.
- Avoid receiving unwanted advertisements from brands or individuals you wish to ignore. Many brands do not mind being blocked as long as they can reach you first.
- Minimize the risk of accidentally opening malicious links or becoming a target for scams.
Blocking a Sender Directly From the Chat List
The simplest way to block someone is from your chat list. Instead of opening the sender’s message, you can tap and hold on their chat to unfold additional options. Look for the Block button at the top, which is available for unknown users. Simply tap it to initiate the block.

Be mindful that this option doesn’t appear for saved contacts or users you’ve previously interacted with. For such cases, you will need to access the three-dot menu and select Block.

Additionally, keep in mind that the Block option is not available for verified businesses (those with a blue tick).
Blocking a Sender From the Contact Info Page
Another effective method is to block a contact via their Contact Info page. This approach works for all contacts, particularly crucial for official business accounts, as they lack the Block button in the chat list.
Tap on the user’s profile picture to access their mini profile. Be careful to select the round profile image; otherwise, you’ll open the message. Once on their profile, tap the “i”icon, scroll down, and select Block business (or Block [contact name]) to complete the action.

Blocking Directly From the Message Notification
You can also block a sender directly from the notification panel on both Android and iOS devices. When you receive a message from an unknown sender, WhatsApp provides a Block button right alongside options to Reply or Mark as Read. This feature allows for immediate blocking without the need to view the message.
Simplify this process by pulling down the notification panel, where you’ll find the Block button available only for first-time contacts.
Adding the Sender to Your Block List Manually
If you prefer to block multiple contacts or official businesses that may not show the Block button in the chat, you can manually add them to your block list. This method can be quite helpful indeed.
To do this, navigate to WhatsApp Settings from your main menu. Proceed to Privacy → Contacts → Blocked contacts, then tap the Add button to select the contacts you wish to block.



Keep in mind, however, that you can only block contacts that are already in your WhatsApp contacts list. To block an unknown number, you first need to save it to your phone.
Blocking Senders on WhatsApp Desktop
For users who prefer the desktop version of WhatsApp, the options for blocking senders without opening messages are limited. You can either block the sender or manually add them to your block list. Unlike the mobile app, you cannot access the Contact Info page or block someone from notifications without first opening their message.
To block someone, simply right-click on their chat, choose Block, and confirm your decision. This method applies to all contacts and unknown users, barring official business accounts.

If you need to add users to the block list on WhatsApp desktop, navigate to Settings, then to Privacy → Blocked contacts. Click on Add blocked contact and select the contact you want to block. Remember, you will need to save the number as a contact beforehand.

Utilizing these techniques, you can effectively block individuals on WhatsApp without opening their messages. If you aim to conceal your read receipts from the sender, consider adjusting your WhatsApp settings to turn off read receipts as well.
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