Email Settings GuideQuick answer: Cosmote email runs on Cosmote Email. Every protocol connects to imap.otenet.gr. IMAP is on 993, POP3 on 995 and SMTP on 465, each secured with SSL. Your username is the full address and the mailbox password you set in your Cosmote account lets you in. Your exact values also sit under your Cosmote mail settings in your Cosmote account. Two login pages? Read this.
What Changed Recently#
A host changes how you sign in more often than it changes the server names. Here is the current status for Cosmote and what it means for your setup.
Worth knowing
Use the entire address to log in. Cosmote turns down a bare mailbox name. Put you@otenet.gr on both incoming and outgoing.
Worth knowing
The servers keep the otenet.gr name. The brand on the screen is Cosmote, yet incoming is imap.otenet.gr and outgoing is smtp.otenet.gr. There is no cosmote.gr mail host to enter.
Worth knowing
The old mail.otenet.gr name still lingers. Many people set it up years ago. Newer profiles use imap.otenet.gr for incoming and smtp.otenet.gr for outgoing.
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
Add the address under your mail settings in your Cosmote account and set its password. That password is the one your apps use.
Where: Cosmote Email then your mail settings
2. Open your Cosmote mail settings
Click your Cosmote account next to the address, then your Cosmote mail settings to read the server name and secure ports.
Where: Find your settings →
About Cosmote Email#
Cosmote Email is the consumer mail service of OTE, the Greek incumbent. The brand you see is Cosmote, though the address and the servers both carry the older otenet.gr name from OTE's internet arm.
That is the part people trip over. Your address ends in otenet.gr, the incoming server is imap.otenet.gr on 993 and the outgoing server is smtp.otenet.gr on 465. The webmail screen at tools.otenet.gr just adds the Cosmote badge on top.
| Service Name | Cosmote Email, on OTEnet |
| Run By | OTE Group, Greece |
| Based In | Greece |
| Address Domains | otenet.gr and otenet.com |
| Incoming Server | imap.otenet.gr or pop3.otenet.gr |
| Outgoing Server | smtp.otenet.gr |
| Ports | IMAP 993, POP3 995, SMTP 465 |
| Webmail | tools.otenet.gr |
| Password | Your email password |
| Username | Full email address |
Cosmote Webmail Login#
You can always read your mail in a browser. The official sign in pages are:
Find Your Settings#
IMAP is ready the moment a mailbox exists, so nothing needs switching on. To read the exact values for one address, Cosmote lists them inside Cosmote Email.
- Log in to Cosmote Email from your Cosmote client area.
- Open your mail settings in the Email section.
- Click your Cosmote account beside your address, then your Cosmote mail settings.
- Pick your app or read the manual settings for the server name and secure ports.
Cosmote IMAP Settings#
IMAP is the incoming choice Cosmote points most people to. Mail stays put on the server, so a laptop and a phone read one shared inbox. Pull the exact server name from your Cosmote mail settings in your Cosmote account.
| IMAP Server | imap.otenet.gr | |
| Port | 993 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full email address, including @otenet.gr | |
| Password | Your mailbox password | |
| Authentication | Required |
Cosmote 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 | pop3.otenet.gr | |
| Port | 995 | |
| Encryption | SSL/TLS (required) | |
| Username | Your full email address | |
| Password | Your mailbox password |
Cosmote SMTP Settings#
SMTP handles outgoing mail. If you can read mail but not send it, the problem is here.
| SMTP Server | smtp.otenet.gr | |
| 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. Cosmote also supports 587 and 26 if 465 is blocked. Confirm outgoing authentication is on.
Check Cosmote IMAP Settings Online#
You don't need to download anything to check Cosmote IMAP settings online. This page is the lookup: every value is verified, current and copyable straight from your browser. Not sure your address uses Cosmote servers? Type it below and find out instantly.
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 Cosmote webmail, which confirms your address and password work, then confirm an email password exists. If both pass, any email app connects with the tables above.
Look Up IMAP Settings for Any Email Domain#
This page covers Cosmote. 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 the mailbox itself. The username is the whole email address and the password is the one you chose when you built the address in your Cosmote account. A standard Cosmote mailbox uses no email password.
Username is the full address
Type you@otenet.gr in full, with the part after the at sign. Cosmote turns down a bare mailbox name.
Put that same address on both incoming and outgoing.
Password is the mailbox one
This is the webmail password you set under your mail settings in your Cosmote account, not your Cosmote client area login. Reset it there if an app keeps refusing it.
The two factor prompt in the Cosmote client area guards billing, not the mailbox connection.
Set Up Cosmote 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.otenet.gron 993 with SSL. - Set outgoing to the same server on 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, Cosmote address and password, then continue.
- Enter imap.otenet.gr with SSL on incoming and outgoing.
- 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.otenet.gr in both server boxes.
- Leave the secure ports iOS fills, since Cosmote 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.otenet.gr on 993 over SSL.
- For outgoing use smtp.otenet.gr 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, Cosmote address and password, then Continue.
- Wait for detection, then make sure IMAP with SSL is picked.
- If detection fails, type imap.otenet.gr in yourself.
- Hit Done and the folders fill in on the first sync.
Cosmote Webmail Settings#
Server settings connect your apps. The controls here shape how the mailbox acts on its own. They live in Cosmote Email webmail, opened at tools.otenet.gr in any browser.
Signature
Add one in the webmail preferences. It rides on mail sent from webmail. A desktop app keeps a signature of its own.
Vacation Auto Reply
Set an autoresponder in your Cosmote account and give it start and end dates. The Cosmote server delivers it, so it fires even when your machine is off.
Filters and Folders
Create filters from the webmail filters in your Cosmote account. 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 running.
Spam and Blocked Senders
Cosmote runs SpamAssassin on incoming mail. Set the threshold and block unwanted senders in your Cosmote account. Flagged mail lands in the junk folder for a look.
POP3 vs IMAP#
| Feature | IMAP | POP3 |
|---|---|---|
| Where mail lives | On the Cosmote 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 |
Cosmote Email at a Glance#
Every value for a Cosmote Email address in one place. The servers stay on otenet.gr:
| Incoming (IMAP) | imap.otenet.gr, port 993, SSL |
| Incoming (POP3) | pop3.otenet.gr, port 995, SSL |
| Outgoing (SMTP) | smtp.otenet.gr, port 465, SSL |
| Outgoing alternative | Port 587 with STARTTLS where 465 is blocked |
| Username | Full email address at otenet.gr |
| Password | Your email password |
| Webmail | tools.otenet.gr |
| Authentication | Required on the outgoing server |
Troubleshooting Cosmote 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 the full email address with the mailbox password from Cosmote Email, not the client area login. |
| Cannot send on port 25 | ISP blocks the default SMTP port | Switch outgoing to 465 with SSL. Cosmote also accepts 587 and 26 if 465 is blocked. |
| An app asks for a cosmote.gr server and none works | Cosmote Email has no cosmote.gr mail host | Use the otenet.gr names instead. imap.otenet.gr for incoming and smtp.otenet.gr for outgoing are what the mailbox answers on. |
| Old profile on mail.otenet.gr will not connect | The server name is out of date | Switch incoming to imap.otenet.gr on 993 and outgoing to smtp.otenet.gr on 465, both with encryption. Keep the same address and password. |
| 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. |
| Right password but the webmail rejects the login | You are on the wrong Cosmote Email page | A personal otenet.gr address signs in at tools.otenet.gr. A company or gov.gr address signs in at corpmail.otenet.gr. The two pages look the same but hold different mailboxes. |
| I never received a corporate mailbox password | Corporate accounts are set up by an administrator | A company or public-sector mailbox is provisioned by your organisation's network administrator, not by Cosmote support. Ask them for the username and password, then sign in at corpmail.otenet.gr. |
Reader Reported Fixes
Copy from your Cosmote mail settings. When a manual setup will not connect, the your Cosmote mail settings page in your Cosmote account prints the exact server name and ports for that mailbox. Pasting those in clears the guesswork behind most failed setups.
Test the login in webmail first. Sign in at webimap.otenet.gr with the full address and mailbox password. If webmail works, the credentials are right and the issue sits in the app settings.
Two Cosmote Email Logins: Home and Corporate #
Cosmote runs two webmail pages that look the same. Both greet you with the COSMOTE EMAIL screen, yet they hold different mailboxes. tools.otenet.gr is the home page for a personal otenet.gr address. corpmail.otenet.gr is the corporate page, for company and public-sector mailboxes.
Because the two pages share the badge, it is easy to land on the wrong one. The login then fails with the right password. A home address does not sign in at corpmail. A corporate mailbox does not sign in at tools. The corporate side also serves the public-sector Syzefxis network, where addresses end in a body's own gov.gr domain.
The quick test is the address. If it ends in otenet.gr and you set it up yourself, use tools.otenet.gr. If it is a company or agency address on its own domain, use corpmail.otenet.gr. A corporate mailbox is created by your organisation's network administrator, so the username and password come from them rather than from Cosmote.
| Your mailbox | Which webmail |
|---|---|
| Personal otenet.gr address | tools.otenet.gr (home) |
| Company mailbox on a custom domain | corpmail.otenet.gr (corporate) |
| Public-sector gov.gr address on Syzefxis | corpmail.otenet.gr (corporate) |
| Where the account comes from | Self-service for home, network admin for corporate |
| Both screens say | COSMOTE EMAIL |
Moving Mail In or Out?#
Cosmote mail speaks plain IMAP, so a mailbox moves in or out like any Cosmote account. Each folder stays on the server until the move 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 the Cosmote server name and mailbox 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 Cosmote 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 Cosmote from the source list. If it isn't listed by name, choose IMAP.
- 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.otenet.gr on port 993 with SSL for Cosmote. 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 Cosmote mailbox to PST, MBOX, EML or PDF before switching or closing the account.
Email Backup Tool →
Email Migration Tool
Copy every folder from Cosmote 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 Otenet server, so every device shows the same inbox. Use imap.otenet.gr on port 993 with SSL.
POP3
Post Office Protocol version 3. Downloads mail to one device and can clear the server. Use pop3.otenet.gr on port 995 with SSL if you prefer POP.
SMTP
Simple Mail Transfer Protocol. Sends your outgoing mail through smtp.otenet.gr on port 465 with SSL. Port 587 with STARTTLS works where 465 is blocked.
SSL and STARTTLS
Two ways to encrypt the link. SSL is on from the first byte, on 993, 995 and 465. STARTTLS upgrades a plain link, on 143, 110 and 587.
otenet.gr
The OTEnet mail platform behind Cosmote Email. Both the address and the servers carry this name, such as imap.otenet.gr.
Cosmote Email
The brand name for the otenet.gr mail service. The webmail screen says Cosmote Email while the servers stay on otenet.gr.
tools.otenet.gr
The Cosmote Email webmail page. Sign in there with your full otenet.gr address and email password for a quick browser check.
OTEnet
OTE's former internet arm, now folded into OTE and Cosmote. It still runs the otenet.gr mail servers.
Full Email Address
Your username for the server is the whole address, such as name@otenet.gr, not the part before the at sign.
Email Password
The password for the mailbox itself. Your apps and the webmail sign in with it, reset through Cosmote support if lost.
mail.otenet.gr
An older server name many people still remember. Newer setups use imap.otenet.gr for incoming and smtp.otenet.gr for outgoing.
help.cosmote.gr
The Cosmote support site. It carries step-by-step Otenet mail guides for Outlook, Apple Mail and phones.
COSMOTE EMAIL (Home)
The consumer webmail at tools.otenet.gr. It holds personal otenet.gr mailboxes that you set up yourself.
OTE Corporate Mail
The business webmail at corpmail.otenet.gr. It holds company and public-sector mailboxes, often on a custom domain.
Syzefxis
The Greek public-sector network. Its mailboxes use a body's own gov.gr domain and sign in through corpmail.otenet.gr.
How We Verify These Settings#
Univik builds email backup, migration and converter software since 2013. Our tools sign in to Cosmote 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 Cosmote 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 Cosmote 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
For incoming mail use imap.otenet.gr on port 993 with SSL. The username is your full address, such as name@otenet.gr. The password is your email password. The webmail lives at tools.otenet.gr.
The usual cause is a short username. Cosmote wants the whole address, name@otenet.gr, not the part before the at sign. Enter the full address for both incoming and outgoing, then try again.
IMAP suits most people. It keeps mail on the Otenet server, so every phone and computer shows the same inbox. POP3 downloads to one device and can clear the server, which suits a single machine that keeps a local archive.
Yes. The server names and ports are identical everywhere. You enter imap.otenet.gr for incoming and smtp.otenet.gr for outgoing. Only the menu wording differs between apps.
The otenet.gr names. Cosmote Email runs on the OTEnet platform, so use imap.otenet.gr for incoming and smtp.otenet.gr for outgoing. There is no cosmote.gr mail host, only the branded webmail screen.
Yes. Otenet supports IMAP, POP3 and SMTP over encrypted connections, which is what these apps use. Keep SSL on for incoming and use port 465 for outgoing. Where 465 is blocked, switch to 587 with STARTTLS.
Add the account to a desktop app over IMAP so the folders sync, then let it finish downloading. In Thunderbird or Outlook you can then export a folder to a local file. POP3 with a copy left on the server pulls everything down too.
That older server name is out of date. Change the incoming server to imap.otenet.gr on 993 and the outgoing server to smtp.otenet.gr on 465, both with encryption on. Your address and password stay the same.
At tools.otenet.gr, with your full otenet.gr address and email password. The screen shows the Cosmote Email badge. A corporate mailbox uses corpmail.otenet.gr instead.
It depends on the mailbox. A personal address ending in otenet.gr uses the home page at tools.otenet.gr. A company or public-sector mailbox, often on its own domain, uses the corporate page at corpmail.otenet.gr. Both screens show the same COSMOTE EMAIL badge, so check the address first. A corporate account is set up by your organisation's administrator, who gives you the username and password. The section above lays it out.
Other Email Provider Settings
Summary: Cosmote Settings at a Glance
- IMAP: imap.otenet.gr, port 993, SSL/TLS
- POP3: pop3.otenet.gr, port 995, SSL/TLS
- SMTP: smtp.otenet.gr, port 465 or 587
- Username is always your full email address
- Cosmote mailbox on the otenet.gr servers
- Pick IMAP for phone + computer sync
- Full address as the username
- Username is always the full email address