How to use WhatSender?

To use the WhatSender extension, it is necessary to have the WhatSender window open. If not, the sending process will pause.


WhatSender is composed of 5 windows, which we will explain in detail one by one.

Home: This is where you will carry out the message setup, where you can add text, customize fields, attach the files you want to send, and select the contacts you want to send the message to.

History: In this window, you can view the history of all sent messages, as well as download the delivery reports. Remember that clearing your laptop's cache will also delete the history, and this action cannot be reversed.

User: In this tab, you can enter your user details for login, change the language, select a general prefix if you are sending messages to a single country, configure delivery times, reset message settings, and clear memory when experiencing errors in the application.

Help: Here you will find the version history of WhatSender, the prices of our packages, a quick way to register if you haven't done so yet, and direct access to this help page.

Open WhatsApp Web: It will open your WhatsApp web session.

Step 1: Log in and initial setup.

  • First, log in to the extension to associate your account, whether it's the free version with a limit of 40 daily messages or a subscription that removes this restriction. If you're not sure how to do it, you can follow this tutorial on how to log in to WhatSender.
  • Once you've logged in, set the language for your session. In your case, you have the option to choose English.
  • If you're going to send messages to a single country, you can select a universal prefix. Remember that when choosing the universal prefix from this option, you should remove it from the phone numbers when importing your contacts, or you'll encounter an error.
  • Configure the delivery times: If you're sending messages with very large attachments or if your connection is slow, we recommend increasing the delivery times to avoid errors. We have a tutorial that covers this topic.

Step 2: Organize your database

Once you have configured your session, it's time to import your contacts. To do that, you need to go to the "Home" tab. It's important to mention that you cannot manage contacts within WhatSender. To do so, we recommend using Excel. This way, you'll have better control of your databases.

You can import contacts by copying and pasting into the extension or using the "Import CSV" option. We have prepared a tutorial on how to import contacts into Whatsender.

If you haven't chosen a universal prefix, Whatsender will ask you to enter the number with the prefix included. For example, if it's from Spain, it will be 34674870576, and if it's from Mexico, the number will be 55689087654. You just need to enter the numbers.

If you want to manually select the prefix, you can do it in two ways. Use the "click here" option (image 1) to select a universal prefix. This means that all numbers are from the same country. Or manually select the prefix (image 2).

Step 3: Compose your message.

Once you have your message recipients, it's time to compose your message. Whatsender works like any text editor, allowing you to use bold, italics, emojis, underlining, etc. (Image 1).

If you can't see your entire message, you have the option to enlarge or shrink the window by sliding the screen up or down (Image 2).

You also have the option to attach files. If you are running campaigns, we recommend using files that are not too heavy (less than 10MB) and that contain useful content for your customers. If you encounter any errors, you can refer to this tutorial that will provide guidelines on how to resolve any attachment-related issues.

The @value button allows you to add custom fields to your messages. It's important to note that visually, you will only see @value1 and @value2. If you use @value3, 4, and 5, these three are hidden in your browser's cache. You can do a test to confirm that you have the information correct. We have prepared this tutorial on how to customize your messages in case you need it.

Step 4: Send your messages

You only need to click on the "Send Message" button.

If you have a large database and you don't want to be blocked by WhatsApp, and you want to adhere to the guideline of sending fewer than 500 messages per day, you can use the "Send in Blocks" option. This option allows you to send blocks of 10 to 400 messages. After each block is completed, you have the option to pause or wait between 1 to 60 minutes between blocks.

If you chose the option to pause, you can resume sending in your history tab. There, the status will appear as paused, and you only need to click the continue button. You can pause the sending at any time and resume it when you want.

Do you need to send the same message or do you always send to the same contacts?

In WhatSender, we have developed a button called "Reload Data." This button allows you to reload any message that is in your history tab back into your home tab. The message and recipients will be loaded for you. This way, you can reuse the message, remove the recipients and add new ones, or use the contacts and change the message to send. This way, you don't have to set everything up again. We hope you enjoy this option because it's one of our favorites.