Fix Gmail Won’t Send Emails with Feasible Solutions On Hand

Gmail won’t send emails is an alarming issue among all Gmail users. When this error occurs, the users receive Gmail error 403 on their device. They are often having trouble in sending emails from their Gmail account. This inconvenience can occur due to several reasons. Lack of internet connection is the primary cause of this issue. Gmail might fail to send emails if your Gmail app is not up-to-date. The browser you are using to access Gmail might be having some issues or is not updated to its latest version. Moreover, the same problem can occur due to overloaded browser caches. We have discussed the methods that can help you in getting rid of such a situation. So, focus on this article and find a suitable solution to access your Gmail application as soon as possible.

Best Methods to Tackle Gmail Won’t Send Emails Issue:

We have selected some of the quick and effective ways of getting rid of this Gmail won’t send emails issue.

Method 1: Check the Network Connection

  1. Make sure that the Airplane mode is off otherwise, it might interrupt the working of Gmail.
  2. Check whether you have enough mobile data to send emails through Gmail.
  3. For a wireless connection, check the strength of the network your device is accessing.
  4. Gmail might fail to send emails due to a congested network.
  5. Turn off WiFi and then re-enable to check whether it resolves the problem or not.
  6. If the problem persists, then shift to another network connection.

Method 2: Update Gmail Application

On Android Devices

Go to the Play Store App and tap the ‘Menu’ icon. Choose ‘My Apps and Games’ and tap the ‘Updates’ button to get the available updates. Select Gmail and tap the ‘Update’ button again to update it to its latest version.

On Desktop

Open Gmail on your PC and tap the ‘More’ icon to check the color of the icon. Click the ‘Menu’ icon and tap the ‘Update’ button to know whether an update is available or not. If an update is available, then tap the ‘Update’ button to get that on your PC.

Method 3: Update your Browser

Gmail might fail to send emails if you are accessing Gmail on an outdated browser. Thus, you need to update the browser by the following ways:

For Android Users

Go to the Play Store App and tap the ‘Menu’ icon. Choose ‘My Apps and Games’ and tap the ‘Updates’ button to get the available updates. Look for the browser that you are using and tap the ‘Update’ button again to update it to its latest version.

For Desktop Users

Open Chrome on your PC and tap the ‘More’ icon to check the color of the icon. A green color indicates that an update is available for 2 days. Similarly, orange color indicates the availability of an update for 4 days and a red color states that the update is available for a period of 7 days. So, click the ‘Update Google Chrome’ link, if you are using Chrome or else choose another browser. Then, tap the ‘Relaunch’ tab to launch the latest version of the browser on your PC.

Method 4: Enable Gmail Sync

Access your Gmail account, tap the ‘Menu’ icon and choose ‘Settings’ option. Select your account and check whether Sync Gmail is checked or not. If not, then turn on the sync and then try to send the email.

Method 5: Check your Notification Settings

  1. Go to Gmail and tap ‘Settings’ from ‘Menu.’
  2. Choose an account and check the box for notifications.
  3. Click ‘Inbox sound and vibrate’ and check ‘Label notifications’ box.
  4. Now select a way in which you want to receive notifications.
  5. Go back to the previous window and click the ‘Manage labels’ option.
  6. Select an inbox label and check the box for ‘Label notifications.’
  7. Choose a way to receive notifications regarding this label.
  8. Again return to the previous page and repeat the same steps for rest of the inbox labels.

Method 6: Delete Messages Stuck in Outbox

Gmail won’t send emails error also occurs if there are already too many emails in the Outbox. Thus, go to Outbox and select the emails with large attachments. Then, choose ‘Delete’ option to remove these emails from Outbox. Now, log out of your Gmail account and close your Gmail application. Then, restart your PC and open Gmail. Now, check whether you can send emails to the required email addresses or not.

Method 7: Clear Browser Cache Data

It is essential to clear the browser cache periodically. Otherwise, the data stored in the browser cache might interrupt your browsing operation. So, clear your browser cache data by the following process.

Google Chrome

Open Google Chrome and enter ‘Chrome://settings/clearBrowserData’ in the URL bar. Navigate to the ‘Clear the following items’ section and select all the checkboxes. After that, tap on the ‘Clear Browsing Data’ box to clear all browser’s cache data.


  1. Open Firefox, go to ‘Menu’ and choose ‘History.’
  2. Choose ‘Clear Recent History’ to clear your recent browsing history.
  3. If the menu bar is not visible, then press ‘Alt’ on your keyboard to see it.
  4. Then, choose the ‘Time range to clear’ option and click on the drop-down arrow to expand it.
  5. Select the desired range for which you would like to delete your browsing history.
  6. Choose ‘Everything’ in order to delete the entire cache.
  7. At last, tap the ‘Clear Now’ button to delete the selected items.
  8. Close all Firefox windows and reopen the browser to access your Gmail account.
  9. Now, compose an email and see whether it can reach the specified recipient or not.

Internet Explorer

Go to Internet Explorer and click on ‘Tools’ from ‘Menu.’ Now, click ‘Safety’ and select ‘Delete browsing history’ to see your browsing history till now. Uncheck the box for ‘Preserve Favorites website data,’ ‘Cookies,’ and ‘Temporary internet files.’ Tap the ‘Delete’ button below to delete the selected items. Click ‘OK’ on the confirmation popup. Furthermore, Windows will display a confirmation message, if it has successfully cleared all cache and cookies.

Alternatively, you can press ‘Ctrl, Shift’ and Delete’ keys together to delete the entire browsing history directly.

Method 8: Check your Gmail Advanced Settings

  1. Open Gmail and sign into your account.
  2. Tap the ‘Settings’ icon and navigate to the ‘Advanced’ tab to check the features.
  3. If you have enabled a feature before, then select it and tap the ‘Disable’ option next to it.
  4. Finally, click the ‘Save Changes’ button at the bottom of the page to let the changes take effect.
  5. Go back to your Gmail account and check whether you can send an email to one or more recipients or not.

Method 9: Make Sure that your Device Has Enough Storage Capacity

Gmail fails to sync if your device is running out of storage and thus displays Gmail won’t send emails error. Thus, you will need to clear space on your device if you get a low memory or disk space notification. So, go to Settings and choose ‘Storage’ to find out the amount of space available. Then, select those apps that you use occasionally and choose ‘Uninstall’ option to remove them from your PC. Besides this, delete all the unimportant files and folders that are occupying too much of disk space. Furthermore, remove the contents that you have saved from Google Play for offline use. Then, open Gmail and try to send an email.

Method 10: Clear Gmail Application Data

Unsaved or saved drafts or other settings might cause Gmail issues. So, go to Settings and select Apps or Application Manager. Search for Gmail in the list of available apps and select it. Then, tap the ‘Clear data’ button and click on ‘OK’ to delete the application data. Restart your device and open your Gmail account to send the unsent emails.

Hope, you would be able to resolve Gmail won’t send emails issue without any hassles with the help of this article. But, in case, you fail to overcome this issue by following the above methods, then the best way is to opt for a professional’s assistance.