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When I created my Gmail account in the 2000s, I didn’t think I would ever fill up my inbox. That seemed especially true after Google increased the amount of free Gmail storage to 15GB in 2013. But fast forward to 2025 and I’m receiving more email than ever. File sizes have increased over time and I haven’t been clearing those dozens of unwanted messages I get every week.
Before I knew it, my inbox was full. I didn’t want to go through my emails one by one and I definitely didn’t want to pay for more storage. Luckily, I didn’t have to: I found a way to clear out massive amounts of storage in minutes, and I didn’t lose a single important email in the process.
All I had to do was create a second Gmail account to store all of my current messages. There’s no restriction on the number of free Google accounts you can own, which means I could set one up as a dedicated archive account and then transfer all of my old emails to it.
Transferring your Gmail messages is also a great strategy if you have a school or business Gmail account that you won’t be able to access permanently. Most universities and businesses will deactivate your account once you’re no longer a student or employee so if you want to view your old messages and files, you’ll have to port them to a personal account before you lose access.
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Completing the whole process of transferring your Gmail messages to a new account doesn’t take too long but it will depend on just how many messages you have. I’ll walk you through the simple process of transferring your emails from your old account to a new one (including the important step of backing everything up first).
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How much data can you store on Gmail?
Fifteen gigabytes of free storage may sound like a lot when you make a Gmail account but it gets filled up quickly. For starters, the 15GB isn’t just used for email: It also includes the files you’ve saved in your Google Drive and Google Photos.
If you frequently send or receive messages that contain large files, such as videos, or if you find yourself uploading a lot of pictures and videos to your Google Photos, then it won’t be long before you’ll see the “Account storage is full” notification. This means that you will no longer be able to send or receive emails on this account so you’ll want to do something ASAP.
The quickest solution is to upgrade to a Google One account. Even if you choose the least expensive plan — 100GB for $20 a year — you’ll still end up paying money to store old emails that you might not even need anymore.
If you don’t want to buy more storage, you can always delete your old emails. You can get back a surprising amount of storage space by putting large files in the trash. Gmail makes it easy for you to identify and delete files by size. Even so, that option might seem tedious; maybe you don’t want to spend hours sifting through correspondence from a decade or more ago, deciding which memories to keep and which to get rid of forever.
There’s always the option to download large files to your desktop before you delete them from your Google account but at some point you’ll probably run into the same issue with your local files and have to manage the storage space on your device.
This brings us to our “nuclear option:” Transferring all your emails to a new Gmail account.
How to transfer your Gmail messages to a new email account
Before you start the Gmail transfer process, I recommend that you back up your emails. You can do this by downloading your emails either to your computer or an external hard drive. You can delete the backup after you finish transferring the emails to your new account if you like, but it’s always a good idea to have an extra copy stored locally.
To back up your Gmail messages, go to Google Takeout. Using my test Gmail account that held about 75,000 messages, I got a download from Google Takeout in about 2 hours.
Once you’ve saved a copy of your emails, you’re ready to begin transferring them. Here are the steps you need to take:
1. Start by logging into your original Gmail account, clicking the “gear” icon in the top right and clicking See all settings.
2. Select the Forwarding POP/IMAP tab and then select the option Enable POP for all mail (POP stands for Post Office Protocol).
3. You’ll have several options under When messages are accessed with POP. To automatically delete the emails from your original account after the transfer, select delete Gmail’s copy.
4. Select Save Changes.
Now it’s time to create your new account and transfer all your messages there:
If you haven’t already done so, create your brand new, inbox-zero Gmail account — we’ll call this your archive account.
1. Login to your new archive account, click the gear icon at the top and select See all settings.
2. Select the Accounts and Import tab at the top, then select Add a mail account next to Check mail from other accounts.
3. In the pop-up window, enter the name of your original Gmail account. Select Next.
4. Select Import emails from my other account (POP3) and select Next again.
5. Enter the password of your original Gmail account. You might also be required to create a Google app password (see note below).
6. Select 995 under Port.
7. Check these 3 boxes: Always use a secure connection (SSL) when retrieving mail, Label incoming messages, Archive incoming messages (Skip the Inbox)
8. Select Add Account.
You’ll probably need to create a Google app password to transfer Gmail messages
I tested this Gmail message transfer process twice and both times the standard password for the Gmail accounts did not work. After a bit of research, I determined that I’d need to create a temporary “app password” to sync the accounts.
Google app passwords are 16-digit passcodes created for “less secure” apps or devices to access your Google account. They work exactly like your Google password.
If your regular Google password doesn’t work for syncing Gmail accounts, visit https://myaccount.google.com/apppasswords to create an app password. Simply create a name for the password — I used “Transfer Bulk Email” — and then hit the Create button. You’ll get a pop-up window with your new 16-digit passcode.
Once you’ve created the app password, return to step 6 of the instructions above and use that new app password instead of your usual password.
Important: Google will only display your app password once. After you’ve created it, you can’t ask to see it again so be sure to write it down or otherwise record it after it’s been created.
Google’s own Help Center mentions that “app passwords aren’t recommended and are unnecessary in most cases.” So once you’ve completed transferring your Gmail messages, I recommend deleting your app password.
What happens after my Gmail accounts are synced?
Once you’ve successfully linked your new Gmail archive account to your original account, your emails should begin to transfer automatically. The process could take several hours or days, depending on how many emails you have.
In my test account with about 75,000 messages, I found that it took Gmail about 2 full days to transfer all of them from the original account to the new archived mail account.
Important: After transferring your Gmail messages to your archived mail account, your original Gmail account will place all those messages in the Trash folder, which you’ll need to empty manually. Clearing out those 75,000 messages from the Trash took about an hour.
Before transferring Gmail messages, my test account was using a little more than 12GB, or 80%, of Google’s free 15GB. After transferring, the account was only using 0.66GB, of which 0.06GB was from Gmail.
What Gmail messages won’t be transferred?
I found that Gmail transferred all of my messages except for two categories — Drafts and Spam.
