This tutorial will help you if your messages appear as “Pending Sending” in WhatSender and do not move to sent status.
This status usually means that WhatSender has not been able to complete the sending process yet. It can happen because the files are too large, because you have not logged in to the extension, because your WhatsApp Web session is outdated, or because temporary browser data is causing a conflict.
Before you start: avoid sending duplicate messages
If your messages are pending, do not click “Send Now” several times. First, go through the checks in this tutorial.
If you start the sending process again without fixing the cause, you may create duplicate sends or make the process take longer.
Step 1: Check that you are logged in to WhatSender
If you have an active subscription or are registered, you need to log in inside the WhatSender extension. If you are not logged in, your account may be limited to 20 or 40 messages, and after a certain number of messages, the next ones may remain pending.
To check this:
- Open WhatSender.
- Go to the User tab.
- Enter your username and password.
- Save the changes if the extension asks you to.
- Try sending again.
If you do not remember how to log in, you can check this tutorial: Log in to WhatSender.
Step 2: Check if you are sending very large files
Attachments can make the sending process take much longer, especially if you are sending a campaign to many contacts.
To prevent messages from staying pending, we recommend that each file is under 2 MB. If the file is larger, compress it before sending it or use an external link.
If you want to send videos, we do not recommend attaching them directly. The best option is to upload the video to YouTube, Google Drive, or another platform, and paste the link inside the message.
Recommended example: instead of attaching a large video, write a short message and add the video link. You can learn more about attachment errors in this tutorial.
Step 3: Refresh WhatSender with WhatsApp Web open
Sometimes WhatSender needs to sync again with WhatsApp Web. To do this correctly, first make sure that WhatsApp Web is open and connected in the same browser window.
Then, follow these steps:
- Open WhatsApp Web.
- Confirm that your account is connected and that you can see your chats.
- Open WhatSender.
- Click the refresh option inside the extension.
- Wait a few seconds and try sending a message.
If you do not know where the refresh option is, watch the video.
Step 4: Clear WhatSender’s memory
If the previous steps do not work, the extension’s temporary data may be causing a conflict. In that case, you can clear WhatSender’s memory from the User tab.
Important: before clearing the memory, download your reports if you need to keep your sending history. You can do it by following this tutorial: download reports from the History tab.
To clear the memory:
- Open WhatSender.
- Go to the User tab.
- First, click Reset config.
- Then click Clear memory.
- Close and reopen WhatSender.
- Log in again with your username and password.
- Try sending again.
Please note that clearing the memory will delete the data saved in the extension, including your username and password. That is why, after this step, you will need to log in again.
Step 5: Test with a small number of contacts
Before sending a full campaign again, run a small test. This will help you confirm whether the problem has been solved.
- Send a simple message without attachments.
- Use only a few contacts for the test.
- Confirm that the message changes from pending to sent.
- If it works, try your normal sending process again.
This test helps confirm whether the problem was related to the session, the extension’s memory, or the size of the files.
If the problem continues: reinstall WhatSender
Reinstalling the extension should be the last step, only if you have already tried the previous solutions and your messages still remain pending.
Before you start, make sure you have downloaded your reports if you need to keep them.
1. Uninstall the extension
Uninstall WhatSender from the Chrome Web Store: uninstall WhatSender.
2. Close all WhatsApp Web tabs
Close all tabs and windows where you have WhatsApp Web open. This step is important. If a tab remains open, the cleanup may not work correctly.
3. Clear Chrome’s cache
With WhatsApp Web completely closed, clear your browser cache. You can follow Google’s official steps here: clear cache and cookies in Chrome.
Remember that this step may delete temporary browser data. If you need to save your WhatSender reports, do it first from the History tab: save WhatSender reports.
4. Close Chrome completely
Close all Chrome windows. There should be no windows or tabs open before continuing.
5. Install WhatSender again
Install the extension again from the Chrome Web Store: install WhatSender.
During the installation, accept the permissions requested by the extension. This step is necessary for WhatSender to work correctly with WhatsApp Web.
If you need help with the installation, check this tutorial: WhatSender installation.
6. Log in to WhatSender
After reinstalling, open WhatSender and go to the User tab. Enter your username and password to activate the benefits of your subscription.
If you skip this step, your account may be limited and your messages may remain pending again.
7. Try sending again
First, run a test with a small number of contacts and no attachments. If the message is sent correctly, you can continue with your usual sending process.
Still need help?
If your messages still appear as pending after following these steps, we can review your case individually.
To help you better, we need you to send us a video showing the problem. Without a visual reference, it is difficult to identify what is going wrong.
In the video, we need to clearly see:
How you import or copy the contacts into WhatSender. It is important that the numbers are clearly visible.
- How your User tab is configured. Please scroll down so we can see the full configuration.
- How you write and configure the message before sending it.
- What happens during the sending process in the History tab. This tab must be open and visible, not minimized.
- It is also important that, if you are using attachments, we can see how you upload them and what type of file you are sending.
To record the video, you can use a free tool such as Loom. Here is the tutorial with the instructions.
Before sending us the video, please review it. If you cannot clearly see the extension, the numbers, and the actions you are taking, we will not be able to see them clearly either.
With a clear and complete video, we will be able to better identify the error and help you find a solution.
Then, send us the video through our contact form: contact support.
Our team will review your case and reply within approximately 1 to 2 business days, Monday to Friday.