Email Settings GuideQuick answer: Juno email uses imap.juno.com on 993 for IMAP or pop.juno.com on 995 for POP3, each over SSL. Sending goes through smtp.juno.com on 465 with SSL. Sign in with your full juno.com address and your Juno password. A mail app needs a paid Juno plan, such as Juno Platinum. See free vs paid plans if a login keeps failing.
What Changed Recently#
Juno mail has a rule that trips up most setups. Here is what a juno.com address needs before an email app will connect.
Worth knowing
A mail app needs a paid Juno plan. Free Juno accounts work only inside the Juno software. Juno Platinum or Juno Turbo unlocks pop.juno.com and smtp.juno.com for Outlook or Apple Mail.
Worth knowing
Keep SSL on every server. Incoming is 993 for IMAP or 995 for POP3. Outgoing is 465. The plain ports send your password in the open.
Worth knowing
Sign in with the whole address. Juno wants you@juno.com in full, not the part before the at sign. The password is your Juno account password.
Before You Begin#
Handle these two basics before anything else. Skip them and your email app will reject the connection even when every server value is correct.
1. Create the mailbox
A mail app connects only on Juno Platinum or Juno Turbo. Free Juno accounts stay inside the Juno software.
Where: Juno account at juno.com
2. Know your Juno password
The login is your full juno.com address. The password is your Juno account password.
Where: Find your settings →
About Juno#
Juno is a US internet service that started in 1996 as free dial-up email. It is now part of United Online. A juno.com mailbox reaches an email app over IMAP or POP3 on a paid plan.
Juno began as one of the first free email and dial-up services in the United States. Today it runs under United Online alongside NetZero. To read a juno.com mailbox in Outlook or Apple Mail, use imap.juno.com or pop.juno.com and sign in with your full address. A paid Juno plan is what turns on that mail app access.
| Service Name | Juno Email |
| Email Domain | juno.com |
| Owned By | United Online |
| Since | 1996 |
| Based In | United States |
| Email Type | juno.com, such as you@juno.com |
| Webmail | juno.com |
| Mail App Access | Paid plan (Platinum or Turbo) |
| Protocols Supported | IMAP, POP3, SMTP |
| App Password Needed | No, mailbox password |
| Username | Full email address |
Juno Webmail Login#
You can always read your mail in a browser. The official Juno pages are:
Find Your Settings#
Juno settings are the same for everyone on juno.com. The one requirement is a paid plan, since free accounts skip mail app access.
- Confirm a paid plan such as Juno Platinum or Juno Turbo.
- Open your email app and add a new account.
- Set incoming to imap.juno.com on 993 or pop.juno.com on 995.
- Set outgoing to smtp.juno.com on 465 over SSL.
Juno IMAP Settings#
IMAP keeps a juno.com mailbox in sync. Mail stays on the server, so a laptop and a phone read one shared inbox. Incoming runs on imap.juno.com over 993.
| IMAP Server | imap.juno.com | |
| Port | 993 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full address, including @juno.com | |
| Password | Your mailbox password | |
| Authentication | Required |
Juno POP3 Settings#
POP3 downloads mail to 1 device. Pick it only if you want a local copy on a single computer. Not sure? See the comparison below.
| POP3 Server | pop.juno.com | |
| Port | 995 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full email address | |
| Password | Your mailbox password |
Juno SMTP Settings#
SMTP handles outgoing mail. If you can read mail but not send it, the problem is here.
| SMTP Server | smtp.juno.com | |
| Port (SSL) | 465 | |
| Port (STARTTLS) | 587 | |
| Encryption | SSL or STARTTLS (required) | |
| Username | Your full email address | |
| Password | Same as incoming mail | |
| Authentication | Required. Switch on outgoing server authentication in the client. |
465 with SSL. Many home connections block port 25. Juno also accepts 587 with STARTTLS if 465 is blocked. Confirm outgoing authentication is on.
Check Juno IMAP Settings Online#
You don't need to download anything to check Juno IMAP settings online. This page is the lookup: every value is verified, current and copyable straight from your browser. Not sure your address is a Juno one? Enter it below to check in a moment.
Does my email address use these settings?
Runs in your browser only. Your address is never sent anywhere or stored.
Want to verify the account itself before configuring an app? Sign in at Juno webmail, which confirms your address and password work. If webmail opens on a paid plan, any email app connects with the tables above.
Look Up IMAP Settings for Any Email Domain#
This page covers Juno. For every other address, work email on a company domain included, we run a free online lookup database: imapsettings.com.
imapsettings.com
Complete email settings database, by Univik
Enter any email address and get the incoming and outgoing server settings for that domain in 1 step:
Your address is used only to find the settings for that domain. Nothing is stored or shared.
Username and Password#
Both come from your Juno account. The username is your whole juno.com address and the password is your Juno account password. There is no separate app password.
Username is the full address
Type you@juno.com in full, with the part after the at sign. Juno turns down a bare mailbox name.
Put that same address on both incoming and outgoing.
Password is the mailbox one
This is your Juno account password, the same one that opens Juno webmail. Reset it from your Juno account if an app keeps refusing it.
A free Juno account has no mail app access at all, so the fix is a paid plan rather than a new password.
Set Up Juno in Email Clients#
The servers and ports are always the same. Only the menus differ. Jump to your app:
Outlook (Windows and Mac)
- In Outlook select Add Account, then turn on manual setup under Advanced options.
- Choose IMAP and set incoming to
imap.juno.comon 993 with SSL. - Set outgoing to
smtp.juno.comon 465 with SSL. - Enter the full address and mailbox password when Outlook prompts you.
- Send a test message to yourself to prove both paths.
Apple Mail (macOS)
- In Mail select Add Account, then pick Other Mail Account.
- Give your name, juno.com address and Juno password, then continue.
- Enter imap.juno.com for incoming and smtp.juno.com for outgoing, both with SSL.
- Keep the SSL ports so nothing sends in plain text.
- Save and wait for the mailbox to load.
iPhone and iPad
- In Settings open Mail, then tap Mail Accounts and Add Account.
- Tap Other then Add Mail Account and fill your details.
- Keep IMAP chosen and put imap.juno.com for incoming and smtp.juno.com for outgoing.
- Leave the secure ports iOS fills, since Juno expects SSL.
- Tap Save and let iOS run its check.
Android
- Open your mail app and tap Add account, then Other or IMAP.
- Put in your address and password. Switch to manual setup if it stalls.
- For incoming use imap.juno.com on 993 over SSL.
- For outgoing use smtp.juno.com on 465 over SSL.
- Save and swipe down to fetch your mail.
Thunderbird
- In Thunderbird pick Account Actions, then Add Mail Account.
- Type your name, juno.com address and Juno password, then Continue.
- Wait for detection, then make sure IMAP with SSL is picked.
- If detection fails, type imap.juno.com for incoming and smtp.juno.com for outgoing.
- Hit Done and the folders fill in on the first sync.
Juno Webmail Settings#
Server settings connect your apps. These controls decide how the mailbox behaves on the server. They live in Juno webmail, which opens from your account at juno.com.
Signature
Add one in the webmail preferences. The signature rides on mail sent from webmail. A desktop app keeps its own.
Vacation Auto Reply
Set a vacation reply in Juno webmail. The Juno server sends it, so it fires even when your machine is off.
Filters and Folders
Create filters in Juno webmail. A server side rule sorts a message ahead of any device fetching it. A rule set inside an app only works while that app is open.
Spam and Blocked Senders
Juno filters incoming mail for spam. Block unwanted senders in Juno webmail. Flagged mail lands in the spam folder for a look.
POP3 vs IMAP#
| Feature | IMAP | POP3 |
|---|---|---|
| Where mail lives | On the Juno server | Downloaded to 1 device |
| Multiple devices | ✅ Everything stays in sync | ❌ Each device sees different mail |
| Sent and deleted mail | ✅ Synced everywhere | ⚠️ Stays only on that device |
| Offline reading | ⚠️ Cached mail only | ✅ Full local copy |
| Server storage used | Yes, counts against your quota | Can be freed after download |
| Best for | Phone + computer, everyday use | Single PC, local archives |
Juno Sending and Storage Limits#
A few limits are worth knowing before you bulk forward or move a mailbox. Juno mail carries a few rules:
| Mailbox storage | Set by your Juno plan |
| Username | Full juno.com address |
| Incoming host | imap.juno.com or pop.juno.com |
| Outgoing host | smtp.juno.com |
| SMTP ports | 465 SSL or 587 STARTTLS |
| Mail app access | Paid plan only |
Troubleshooting Juno Connections#
Find the exact error your email app shows, then apply the fix:
| Error you see | What it means | Fix |
|---|---|---|
| Username or password rejected | Short username or wrong password | Use your full juno.com address with your Juno password. A free account has no mail app access. |
| Cannot send on port 25 | ISP blocks the default SMTP port | Switch outgoing to 465 with SSL on smtp.juno.com. Port 587 with STARTTLS works if 465 is blocked. |
| Free account will not connect | No mail app access on free Juno | A free Juno account cannot use an email app. Upgrade to Juno Platinum or Juno Turbo, then use imap.juno.com and smtp.juno.com. |
| Invalid password on smtp.juno.com | Plan lacks send access | The password can be right while the plan blocks sending. A paid Juno plan turns on smtp.juno.com. |
| Cannot connect to server | Wrong port or encryption | Set 993 with SSL incoming and 465 with SSL outgoing. A firewall on your own machine can block it as well. |
| Repeated password prompt | Short username or a typo | Clear the saved login, then put in the full address with the mailbox password. |
| Messages stuck in Outbox | SMTP authentication is off | Enable "outgoing server requires authentication" with the same login as incoming mail. |
| SMTP 550 5.7.1 on send | Account tier has no relay permission | The password can be right while the plan blocks sending. Confirm Juno Platinum or Juno Turbo, then retry smtp.juno.com on 465. |
| Works in Juno software but not Outlook | Free tier is software only | The free Juno client is separate from IMAP and SMTP. A paid tier opens imap.juno.com and smtp.juno.com for a standard email app. |
Reader Reported Fixes
Check the plan first. A mail app connects only on Juno Platinum or Juno Turbo. On a free account no server value will work until you upgrade.
Test the login in webmail first. Sign in at juno.com with your address and Juno password. If webmail opens, the credentials are right and the issue is the plan or the ports.
Free vs Paid: Why a Mail App Rejects Juno #
The single biggest reason a juno.com address will not connect in Outlook or Apple Mail is the plan. Juno keeps IMAP, POP3 and SMTP access on its paid tiers. A free, ad supported Juno account is limited to the Juno software itself, so imap.juno.com and smtp.juno.com turn its login away.
This shows up in a confusing way. The password is correct, yet the app reports an invalid password or a send failure. On smtp.juno.com the exact error is often SMTP 550 5.7.1, which means the account tier has no relay permission rather than a wrong password.
Juno Platinum and Juno Turbo both turn on mail app access. Older grandfathered accounts sometimes keep it too, so the rule is not absolute. If a login keeps failing, confirm your current tier from your Juno account before you change any server value.
| Juno tier | Mail app access |
|---|---|
| Free (ad supported) | Juno software only, no email app |
| Juno Platinum | Full access on imap.juno.com, pop.juno.com and smtp.juno.com |
| Juno Turbo | Mail app access plus a dial-up accelerator |
| Grandfathered | Can keep access, so confirm your tier first |
Moving Mail In or Out?#
Juno mail speaks plain IMAP on a paid plan, so a mailbox moves in or out like any standard account. Each folder stays on the server until the copy finishes.
Take a copy first. Back up the mailbox before a move. A note that arrives mid switch can sit on either side. A copy keeps you safe.
Carrying mail across? The Univik Email Migration Tool moves each folder over an IMAP link. Give it imap.juno.com with your Juno password on this side and the other account opposite.
Rather hand it off? Our Email Migration Services team runs the whole move and verifies each folder arrived.
Use These Settings in Univik Email Backup#
The same IMAP settings above let you download your complete Juno mailbox to your computer. Univik Email Backup saves everything as PST, MBOX, EML or PDF files you keep forever, even if the account closes.
- Download Univik Email Backup and install it on Windows.
- Select Juno from the source list. If Juno is not listed, pick a plain IMAP account.
- Give the complete email address with your mailbox password. The login name is always the whole email address.
- When the backup tool wants server details, hand it imap.juno.com on port 993 with SSL. Take those values straight from the IMAP table above, with port
993over SSL. - Pick a saving format and folder, then start the backup. Large mailboxes download in the background.
Univik Tools That Use These Settings#
Many people land here while migrating or archiving a mailbox. All 3 tools use the same IMAP settings from this page:
Email Backup
Download your complete Juno mailbox to PST, MBOX, EML or PDF before switching or closing the account.
Email Backup Tool →
Email Migration Tool
Copy every folder from Juno straight into Gmail, Microsoft 365 or any other account. No manual export needed.
Email Migration Tool →
Email Converter Tool
Already have MBOX, EML or OST files from an old export? Convert them to PST, PDF or any format your new app opens.
Email Converter Tool →Prefer to hand the whole migration to experts?
If the hostnames and passwords feel like busywork, you can let the tool handle it. Univik's migration team handles the complete project: planning, transfer, verification and a report showing every folder made it. Since 2013, for single mailboxes up to full company moves.
Email Settings Glossary#
IMAP
Internet Message Access Protocol. Reads mail that stays on the server, so all your devices see the same inbox, folders and read status.
POP3
Post Office Protocol version 3. Downloads mail to 1 device and can remove it from the server. Older method, still useful for local archives.
SMTP
Simple Mail Transfer Protocol. Sends your outgoing mail. Every account needs it next to IMAP or POP3, which only receive.
SSL / TLS / STARTTLS
Encryption for the connection. SSL/TLS encrypts from the start (ports 993, 995, 465). STARTTLS upgrades a plain connection (port 587).
Juno Password
Your Juno account password, the same one that opens Juno webmail. Your email app uses this. There is no separate app password.
imap.juno.com
The Juno IMAP incoming server, on 993 over SSL. IMAP keeps mail in sync across your devices.
pop.juno.com
The Juno POP3 incoming server, on 995 over SSL. POP downloads mail to one device.
smtp.juno.com
The Juno outgoing server, on 465 with SSL or 587 with STARTTLS. It needs authentication with your Juno login.
Juno Platinum
A paid Juno plan that turns on email app access. Free Juno accounts stay inside the Juno software.
Juno Turbo
Another paid Juno plan with mail app access, alongside a faster dial-up accelerator.
United Online
The company behind Juno and NetZero. Both run on the same email platform.
Juno Webmail
The browser inbox at juno.com. It opens with your address and Juno password on any plan.
Juno Software
Juno's own desktop program for dial-up and mail. A free Juno account works only here, not in a third-party email app.
SMTP 550 5.7.1
A send error meaning the account has no relay permission. On Juno it usually points to a free or unsupported tier rather than a wrong password.
Grandfathered Plan
An older Juno account that keeps features a current free tier lacks. Some grandfathered plans still allow email app access.
How We Verify These Settings#
Univik builds email backup, migration and converter software since 2013. Our tools sign in to Juno over IMAP and SMTP every day for thousands of users, so a changed server, port or login rule shows up in our connection logs before most guides notice it.
Every value on this page is confirmed with three checks: a live IMAP and SMTP connection from Univik Email Backup, a comparison against the Juno guides and a sign in with a real mailbox using the full address. We re verify after any provider announcement and at least once a quarter.
Found something that no longer matches what Juno shows you? Tell us and we will retest and update the page, with the change logged in what changed recently.
Help & Support
Frequently Asked Questions
Use imap.juno.com on 993 for IMAP or pop.juno.com on 995 for POP3, each over SSL. Outgoing is smtp.juno.com on 465. Sign in with your full juno.com address and your Juno password on a paid plan. The IMAP settings section holds the full table.
Check the username first. It must be the complete address rather than the part before the at sign. Check your plan first. A free Juno account has no email app access at all. On a paid plan, use your full juno.com address and Juno password.
IMAP suits most people, since mail stays on the server and every device matches. POP downloads mail to one machine and can lose it if that machine fails. Full comparison here.
Yes. The server, ports and encryption match on iPhone, Android and Windows. Only the path to the settings screen shifts by app, which the client setup guides spell out.
Yes. Juno reserves email app access for paid plans like Juno Platinum and Juno Turbo. A free Juno account works only inside the Juno software, so imap.juno.com and smtp.juno.com reject it.
Yes. Keep SSL on each server so the sign in never travels in the open. Juno uses 993 or 995 for incoming and 465 for outgoing.
An email client with IMAP downloads mail as it syncs, but a dedicated backup tool is faster and saves standard files you can open anywhere. See how to back up your Juno mailbox. If you already exported files in another format, an email converter changes them to PST, PDF or whatever your new app opens.
With Juno the usual cause is a plan change. If a free tier lost email app access, the servers reject the login. Confirm a paid Juno plan, then reconnect with imap.juno.com and smtp.juno.com.
A migration tool copies mail across the two accounts on an IMAP link. Give the Juno IMAP settings with imap.juno.com and your Juno password on this side and the destination details on the other. Each folder lands with its dates intact.
If setting this up feels risky or you have many accounts to move, our managed email migration service does the entire job for you.
Often it is not the password at all. On a free or unsupported tier, smtp.juno.com returns SMTP 550 5.7.1 because the account has no relay permission. Confirm you are on Juno Platinum or Juno Turbo, then the same login works. The free vs paid section covers how to check.
Other Email Provider Settings
Summary: Juno Settings at a Glance
- IMAP: imap.juno.com, port 993, SSL/TLS
- POP3: pop.juno.com, port 995, SSL/TLS
- SMTP: smtp.juno.com, port 465 or 587
- Username is always your full email address
- Mail app access needs a paid Juno plan
- Pick IMAP for phone + computer sync
- Full address as the username
- Username is always the full email address