If your Gmail inbox is overflowing with thousands of messages, you are not alone. Many users reach the 15GB free storage limit faster than expected, especially when Google Drive and Google Photos share the same quota. The good news is that you can reclaim all that space without spending a dime—by transferring your old emails to a new, dedicated archive account. However, there is a deadline: Google plans to end support for the POP3 protocol later this year. Once that happens, the easiest way to bulk-move messages will disappear.

POP3 (Post Office Protocol 3) allows an email client to fetch messages from a server and store them locally. Google has already disabled POP3 for new users in early 2026, but current users can still use it until the full shutdown. By acting now, you can take advantage of this loophole to clean out your primary inbox.

Understanding the 15GB Storage Limit

Google offers 15GB of free storage shared across Gmail, Google Drive, and Google Photos. That might sound like a lot, but it fills up quickly if you send or receive large attachments, store many photos in Original quality, or keep years of email history. When your storage is full, you cannot send or receive new emails until you free up space.

The quick fix is to upgrade to a Google One plan, starting at $20 per year for 100GB. But paying for storage to keep old emails you rarely read is unnecessary. Deleting messages individually is time-consuming, and downloading everything to your computer just moves the problem. The smarter solution is to transfer all your old emails to a new, empty Gmail account—effectively giving you a second 15GB of free storage for archival purposes.

How to Transfer Your Gmail Messages

The transfer process uses Gmail's built-in POP3 fetching feature. Here are the steps you need to follow, from backup to completion.

Step 1: Back Up Your Emails (Recommended)

Before making any changes, back up your messages using Google Takeout. This service compresses all your Gmail data into a downloadable archive. For an account with about 75,000 messages, the process takes roughly two hours. The backup ensures you have a local copy in case something goes wrong during the transfer.

Step 2: Enable POP3 on Your Old Account

Log into your primary Gmail account. Click the gear icon in the top right, then select See all settings. Go to the Forwarding and POP/IMAP tab. Under POP Download, choose Enable POP for all mail. For the option When messages are accessed with POP, select delete Gmail's copy to automatically remove messages from the old account after they are fetched. Save your changes.

Step 3: Create Your New Archive Account

Set up a brand-new Gmail account. This will be your archive where all your old emails will live. Keep the inbox clean—you will not use this account for daily correspondence.

Step 4: Configure POP3 Fetching on the New Account

Log into your new archive account. Go to Settings > See all settings > Accounts and Import. Next to Check mail from other accounts, click Add a mail account. Enter the email address of your old account. Select Import emails from my other account (POP3). You will need the password of the old account.

During testing, the regular password often failed. You may need to create a Google app password. Go to https://myaccount.google.com/apppasswords (you must have 2-Step Verification enabled). Create a name for the password, such as "Transfer Bulk Email," and generate a 16-digit code. Use that code instead of your usual password in the POP3 setup.

In the setup screen, set the Port to 995. Check the following three boxes: Always use a secure connection (SSL), Label incoming messages, and Archive incoming messages (Skip the Inbox). Click Add Account. You can also choose to allow sending mail from the old address, which is optional but convenient.

Step 5: Wait for the Transfer to Complete

Once linked, the new account will begin fetching messages from your old account. The transfer speed depends on the number of emails. In a test with 75,000 messages, it took about two full days. After all messages are imported, go back to your old account and empty the Trash folder. Those 75,000 messages took about an hour to delete permanently.

What Happens to Your Storage

Before the transfer, a test account used 12GB out of 15GB. After moving all emails and emptying the trash, usage dropped to 0.66GB, with only 0.06GB from Gmail. That freed up over 11GB for future use.

Messages That Won't Transfer

POP3 does not fetch Drafts or Spam messages. Drafts must be handled manually—you can delete them, move them to the new account by forwarding, or leave them. Spam is automatically deleted after 30 days, so you can ignore it or clean it out manually.

Final Steps After Transfer

Once the transfer is complete, stop the automatic fetching to avoid duplicating future messages. Log into your new account, go to Settings > Accounts and Import, and under Check mail from other accounts, click delete next to your old account. Confirm the deletion.

If you created an app password, revoke it by going back to the App Passwords page and clicking the trash icon next to the password.

Enjoy your freshly cleared inbox. To keep your archive account active, remember to log in at least once every two years—otherwise Google may delete it due to inactivity. With this method, you effectively double your free Gmail storage without paying a cent, but only if you act before the POP3 shutdown later this year.

Source: CNET News