If your Gmail inbox is overflowing with thousands of messages, you're not alone. Many users hit the dreaded "storage full" warning, which prevents sending and receiving emails. Google offers 15GB of free storage shared across Gmail, Google Drive, and Google Photos. Once that fills up, you face a choice: delete old emails, pay for more storage, or find a clever workaround. Fortunately, there is an easy solution — but you'll need to act quickly before Google removes a key tool.

Later this year, Google plans to end support for the POP3 protocol. This change will make it significantly harder to transfer your old messages to another account. New users already lost access in early 2026, but current users can still use POP3 until it's turned off. This article walks you through the step-by-step process of moving your emails to a new Gmail account, reclaiming your 15GB of free storage, and avoiding the inevitable storage crunch.

Why Your Gmail Storage Fills Up So Fast

The 15GB of free storage may seem generous when you first create an account, but it depletes quickly. Every email with an attachment, every photo backed up from your phone to Google Photos, and every file saved in Google Drive counts against the same pool. If you receive large video files or send high-resolution images, you can easily consume gigabytes within months. Once the storage is full, Gmail stops delivering new messages, and you cannot send emails either. The notification "Account storage is full" becomes a constant annoyance.

Many users resort to paying for Google One storage. The cheapest plan offers 100GB for $20 per year. While affordable, it still adds an ongoing cost simply to keep old emails that you may never need again. Deleting emails manually is tedious, especially if you have years of correspondence to sort through. The alternative — transferring all your emails to a separate archive account — gives you a fresh start without spending a dime.

How the POP3 Transfer Works

POP3 (Post Office Protocol 3) is an email protocol that allows you to download messages from one account to another. Google has supported it in Gmail for years, enabling users to consolidate or move emails. The process involves enabling POP3 on your original account, setting up a new Gmail account as the destination, and configuring the new account to fetch all messages from the old one. Once the transfer completes, you can delete the messages from your original account, freeing up the full 15GB.

However, Google is phasing out POP3 support. The company announced that new users lost access in the first quarter of 2026, and existing users will lose it later this year. After that, transferring emails will require more complicated methods, such as using third-party tools or manually forwarding messages. Therefore, if you want to use this free, built-in loophole, now is the time.

Step-by-Step Instructions for Transferring Gmail Messages

Before you begin, back up your emails. Use Google Takeout to download a copy of all your messages to your computer or an external drive. This ensures you have a local backup in case something goes wrong. The download can take a few hours, depending on your email volume. Once your backup is complete, follow these steps:

Step 1: Enable POP3 in Your Original Gmail Account

• Log in to your original Gmail account (the one that's full).
• Click the gear icon in the top right corner, then select "See all settings."
• Go to the "Forwarding and POP/IMAP" tab.
• In the POP Download section, select "Enable POP for all mail."
• Under "When messages are accessed with POP," choose "delete Gmail's copy" to automatically remove emails from the original account after transfer.
• Click "Save Changes."

Step 2: Create Your New Gmail Archive Account

• Sign up for a new Gmail account if you don't already have one. This will serve as your archive for old emails.
• Log in to the new account.
• Click the gear icon and select "See all settings."
• Go to the "Accounts and Import" tab.
• Next to "Check mail from other accounts," click "Add a mail account."
• Enter your original Gmail address and click Next.
• Select "Import emails from my other account (POP3)" and click Next again.
• Enter the password for your original account. Note: You may need to create a Google app password instead (see below).
• Set the Port to 995.
• Check the three boxes: "Always use a secure connection (SSL) when retrieving mail," "Label incoming messages," and "Archive incoming messages (Skip the Inbox)."
• Click "Add Account." You will then be prompted to confirm that you want to be able to send mail as your original address. You can proceed or skip that step.

Step 3: Create a Google App Password (If Needed)

In many cases, your regular Gmail password will not work for POP3 transfers. You must create an app password. To do this:

• Go to https://myaccount.google.com/apppasswords (log in to your original account if prompted).
• Note: You must have 2-Step Verification enabled on your account to create app passwords.
• Click "Select app" and choose "Mail," then "Select device" and choose "Other (Custom name)."
• Enter a name like "Gmail Transfer" and click "Generate."
• Google will display a 16-character password. Copy it immediately; you won't see it again.
• Use this app password in place of your regular password when setting up the POP3 import in the new account.

Step 4: Wait for the Transfer to Complete

Once your accounts are linked, the new account will start pulling emails from the original account. The time required depends on how many messages you have. In tests with 75,000 emails, the transfer took about two full days. During this time, you can use both accounts normally, but avoid making changes to the original account's settings.

Step 5: Empty the Trash in Your Original Account

After the transfer completes, your original Gmail account will have moved all the imported messages to the Trash folder. You must empty the Trash manually. This can take an hour or more for large numbers of messages. Once emptied, your original account's storage usage will drop dramatically. For example, a test account using 12GB before the transfer dropped to just 0.66GB afterward, freeing nearly all 15GB.

What Messages Are Not Transferred?

During the POP3 transfer, two types of messages are left behind: Drafts and Spam. Drafts must be handled manually — you can copy them to the new account or delete them. Spam emails are automatically deleted by Google after 30 days, so you can simply wait or manually delete them from the Spam folder. All other emails, including sent messages and labels, should transfer successfully.

Final Steps After the Transfer

Once all emails have been imported to your new archive account, you should stop the automatic transfer to avoid duplicate fetches. Log into your new account, go to Settings > Accounts and Import > Check mail from other accounts, and click "delete" next to your original account. Confirm the deletion. Also, if you created an app password, return to the app passwords page and delete it by clicking the trash icon. This ensures security.

Now you have a fresh, spacious original Gmail account and a separate archive account containing all your old emails. You can continue using your primary account without storage worries. However, keep in mind that Google may delete inactive accounts after two years of no sign-ins. To keep your archive account alive, log into it at least once every two years.

By acting now, you can take full advantage of the POP3 loophole before Google shuts it down. This simple, free method gives you back 15GB of storage without spending a cent or losing a single message. Don't procrastinate — your inbox will thank you.

Source: CNET News