The Mailbox.gr inbox service is used primarily by Greek residents and expatriates who need reliable mailbox access in Greek or through a client of their choice. This reference page documents the exact server hostnames, TCP ports, and encryption modes required to reach Mailbox.gr from any modern IMAP, POP3, or SMTP client.
Provider-specific quirks matter here. Some regional inbox services require the full email address as the username, others accept only the local part; some enforce STARTTLS on port 587, others expect implicit TLS on 465. The values documented below are the working combination for Mailbox.gr at the time of the last verification.
If you need to plug Mailbox.gr into a mail app that does not have auto-discovery for it (which is common for smaller regional providers), the block-by-block breakdown on this page gives you the exact strings to paste into each field.
Key Takeaways
- Mailbox.gr POP3 server: pop.mailbox.gr, port 995, SSL/TLS encryption, requires full email and password authentication.
- Mailbox.gr IMAP server: imap.mailbox.gr, port 993, SSL/TLS encryption for real-time email synchronization across devices.
- Mailbox.gr SMTP server: smtp.mailbox.gr, supports ports 465/587 with TLS/SSL, mandatory authentication for secure outgoing email.
- Use full email address and password for authentication on both incoming (POP3/IMAP) and outgoing (SMTP) servers.
- Enable SSL/TLS encryption on all servers to ensure secure transmission and protect email credentials and content.
Mailbox.gr Account Configuration Details
The configuration of a Mailbox.gr account requires specific server settings to guarantee proper email functionality. Ensuring email encryption is enabled is vital for maintaining account security and protecting sensitive correspondence. Users must input accurate parameters to establish a secure connection with Mailbox.gr servers, preventing unauthorized access and data breaches. Proper setup involves using designated ports and protocols that support encryption standards like SSL/TLS.
| Setting Type | Recommended Configuration |
|---|---|
| Incoming Server | mail.mailbox.gr |
| Outgoing Server | smtp.mailbox.gr |
| Encryption Method | SSL/TLS |
| Authentication | Required |
Adhering to these settings guarantees encrypted data transmission and robust account security, safeguarding user information during email exchanges.
Mailbox.gr IMAP Server Details
Configuring the Mailbox.gr IMAP server settings plays a key role in managing email synchronization across multiple devices. IMAP allows users to access their emails in real-time, ensuring messages remain consistent whether viewed on a smartphone, tablet, or desktop.
The Mailbox.gr IMAP server prioritizes email encryption and server security to protect sensitive data during transmission. Key aspects include:
- Server address: imap.mailbox.gr
- Port: 993 with SSL/TLS encryption
- Authentication: Requires username and password
- Supports secure IMAP protocols to prevent unauthorized access
These settings ensure a seamless, secure experience with Mailbox.gr, maintaining data integrity and privacy. Proper configuration optimizes email retrieval efficiency while safeguarding against potential cyber threats.
Mailbox.gr POP3 Server Configuration
How does Mailbox.gr handle email retrieval for users who prefer downloading messages directly to their devices? Mailbox.gr supports POP3 protocol, allowing users to download emails for offline access. This setup is ideal for those wanting local storage and control over their messages.
Key features of Mailbox.gr POP3 configuration include:
- POP3 server address: pop.mailbox.gr
- Port: 995 with SSL/TLS enabled for robust email encryption
- Authentication required using full email and password
- High server uptime guarantees reliable and continuous access
Mailbox.gr SMTP Server Configuration
Where does outgoing email traffic pass through for Mailbox.gr users? It is routed via the Mailbox.gr SMTP server, which guarantees reliable delivery and robust server security. Proper SMTP configuration is essential for seamless sending of emails while maintaining confidentiality through email encryption.
Key aspects of Mailbox.gr SMTP server configuration include:
- SMTP server address: smtp.mailbox.gr
- Port numbers supporting TLS/SSL for secure transmission
- Mandatory authentication to prevent unauthorized access
- Enforcement of email encryption protocols to protect data integrity
These settings guarantee that outgoing messages are transmitted securely, minimizing risks of interception or spam filtering. Users must configure their email clients accordingly to benefit from Mailbox.grβs secure mail sending infrastructure.
IMAP, POP3 and SMTP Integration into Gmail

Configure Gmail with external IMAP/POP3/SMTP to send/receive emails from your custom domain through Gmail’s interface. Perfect for professionals managing multiple accounts in one place.
- Google Account β Security β App passwords (2-Step Verification must be enabled).
- Generate App Password for “Mail” β copy 16-character password.
- Gmail β Settings β See all settings β Forwarding and POP/IMAP.
- Enable IMAP β Save Changes.
- Incoming (IMAP):
[IMAP SERVER]:993 SSL| Outgoing (SMTP):[SMTP SERVER]:587 STARTTLS. - Use your full email + App Password (not regular password) for authentication.
β Gmail Result: Send/receive custom domain email directly in Gmail interface with full search/folder integration.
WordPress SMTP Plugin Configuration (WP Mail SMTP + MailPoet)


Configure SMTP in WordPress to fix email delivery issues and prevent spam folder placement. WP Mail SMTP and MailPoet ensure reliable transactional emails, contact forms, and newsletters deliver successfully.
- Install and activate WP Mail SMTP or MailPoet plugin from your WordPress dashboard.
- Navigate to WP Mail SMTP β Settings or MailPoet β Settings β Sending tab.
- Select “Other SMTP” as your mailer method from the dropdown.
- Enter SMTP settings with Port
587and STARTTLS encryption (when available). - Input your full email address and password in the authentication fields.
- Click Save Settings and send a test email to verify the configuration works.
β Result: WordPress contact forms, user registrations, and newsletter emails now deliver reliably via your SMTP server.
This configuration includes these plugins and tools within WordPress:
- HappyForms
- Elementor Forms
- Gravity Form
- WooCommerce Checkout Form
- Contact Form by BestWebSoft
- Fluent Forms
- Contact Form 7
- WPForms
- Ninja Forms
- Default WordPress Reg Form
- Forminator Forms
- Formidable Form
- WordPress Comment Form
- Mail Mint Form
Thunderbird OAuth2 Email Setup (IMAP + SMTP)

Secure IMAP & SMTP using OAuth2 token authentication in Thunderbird. This modern method eliminates password storage for enhanced security.
- Open Thunderbird β Account Settings β Account Actions β Add Mail Account.
- Enter your email address and click Continue to begin setup.
- Select IMAP protocol and choose OAuth2 authentication method.
- Thunderbird opens a browser window β log in to your provider β Grant access permissions.
- Automatic configuration applies: Incoming: use the IMAP server address from the settings table above, port 993, SSL
- Click Done β Thunderbird begins syncing folders and emails immediately.
OAuth2 advantage: Token-based authentication enhances security over traditional password methods while maintaining full functionality.
Outlook IMAP, POP3 & SMTP Setup (Auto + Manual)

Outlook configuration supports both automatic server detection and manual IMAP/POP3/SMTP settings for complete control over your email setup.
π Auto Setup (Recommended):
- Go to File β Add Account β Enter your email address + password.
- Outlook automatically detects IMAP, POP3, and SMTP server settings.
- Click Connect β setup completes in approximately 30 seconds.
βοΈ Manual Setup (Advanced Users):
- Authentication: Use your full email address + password for both servers
BlueMail Two-Factor Authentication + OAuth2 Setup
BlueMail security setup combines OAuth2 authentication with two-factor authentication (2FA) for maximum account protection.
- Open BlueMail β Account Settings β Security β Enable Two-Factor Authentication.
- Link your phone number or authenticator app for 2FA verification codes.
- Add email account β Choose OAuth2 or manual server configuration.
- Enter server details from the table above
- Complete login with 2FA code β enhanced security layer activated.
Apple Mail IMAP Configuration (iCloud + Manual)

Setup IMAP in Apple Mail for seamless synchronization across Mac, iPhone, and iPad devices with full folder support.
- Open Apple Mail β Mail β Add Account β Other Mail Account.
- Enter your name, email address, and password β click Continue.
- Select IMAP account type β Incoming server.
- Next: Outgoing server
- Click Sign In β Mail verifies settings and begins folder synchronization.
iOS Mail App Setup (iPhone/iPad)

iPhone/iPad Mail configuration syncs IMAP folders across all Apple devices with native push notifications.
- Go to Settings β Mail β Accounts β Add Account β Other.
- Enter name, email, password β Next.
- Account Type: IMAP β Incoming:
[IMAP SERVER]Port993SSL. - Enter your outgoing SMTP server and port.
- Next β Save β iOS verifies and syncs immediately.
Push enabled automatically: new emails appear instantly on Lock Screen.
Android Mail App Configuration

Android Gmail/Email app setup works with any IMAP/SMTP provider for native device integration.
- Go to: Settings β Accounts β Add Account β Email (or Gmail app).
- Enter email + password β Next.
- Account Type: IMAP
- Outgoing server details β Require authentication.
- Next β Sign In β Android syncs contacts/calendar if enabled.
Sync interval: 15min default (battery optimized) – change in Account Sync settings.
eM Client Manual IMAP & POP3 Sync Configuration

Configure your email settings on eM Client with either automatic setup or through precise IMAP/POP3 server settings for reliable email synchronization and full folder support.
- Click New Account β Mail
Authentication requires full email address + password for both incoming and outgoing servers.Click Next β Finish β Send/Receive All Folders to begin synchronization.
Mailbird OAuth2 IMAP & SMTP Integration

Secure Mailbird setup using OAuth2 authentication eliminates password storage while providing full IMAP/SMTP functionality.
- Mailbird β Add Account β Enter your email address to begin.
- Choose Manual Setup β OAuth2 authentication method from options.
- Browser opens your provider’s login page β enter credentials β Authorize Mailbird.
- Mailbird receives access token and automatically configures IMAP/SMTP servers.
- Setup completes β full email synchronization begins automatically.
Mailspring OAuth2 IMAP Configuration

Mailspring OAuth2 setup provides secure email access without storing passwords directly in the application.
- Add new email account β Select Custom IMAP configuration option.
- Incoming
IMAP SERVERand outgoingSMTP SERVER. - Mailspring prompts OAuth2 authorization via browser window for secure login.
- Log into your provider account and grant Mailspring access permissions.
- Mailspring automatically manages authentication tokens β seamless email access established.
Postbox Manual IMAP Synchronization

Postbox IMAP setup with manual synchronization control for precise email folder management and immediate updates.
- Add IMAP account β Enter IMAP Server details.
- Outgoing SMTP with full email authentication.
- Postbox connects and displays folder structure automatically.
- Right-click any folder β Get Messages for immediate manual synchronization.
- Manual sync updates local mailbox instantly with server changes (read status, deletions, organization).
SendBlaster SMTP Configuration (Bulk Email)

Bulk email SMTP configuration in SendBlaster requires precise server authentication for reliable campaign delivery.
- Open SendBlaster β Settings β SMTP Configuration section.
- Enter SMTP Server and Port: do not forget to Enable TLS encryption.
- Authentication: Your full email address + password (required).
- Click Test Connection β verify green success indicator appears.
- Save settings β SendBlaster ready for bulk email campaigns and newsletters.
MailJerry IMAP Real-Time Synchronization

MailJerry IMAP setup enables real-time access to email folders stored on your provider’s server across all devices.
- Incoming Server and encryption required.
- Authentication: Full email address + password for secure connection.
- Enable real-time folder synchronization settings in MailJerry preferences.
- Folders update instantly with new messages, read status, and deletions across devices.
Clean.email OAuth2 Synchronization Setup

Clean.email OAuth2 setup provides secure mailbox access without sharing passwords directly with the application.
- Add new account β Select OAuth2 authorization method.
- Your provider opens login portal β enter credentials securely.
- Grant Clean.email permissions for email read/write access.
- OAuth2 token enables real-time message management, filtering, and organization.
- Setup complete β Clean.email maintains secure, ongoing mailbox synchronization.
Common IMAP/POP3/SMTP Troubleshooting
- Authentication failed: Always use your complete email address, never just the username portion.
- Port blocked by ISP: Try alternative SMTP port as fallback.
- SSL certificate errors: Ensure certificate validation is enabled in client settings.
- Slow or no IMAP sync: Check folder subscriptions and enable all folders in client settings.
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Frequently Asked Questions
How Do I Recover a Lost Mailbox.Gr Email Password?
To recover a lost mailbox.gr email password, the user must initiate password recovery via the website, complete account verification through provided identity confirmation methods, and follow instructions to reset the password securely and regain email access.
Can I Access Mailbox.Gr Emails on My Mobile Device?
Mailbox.gr emails can be accessed on mobile devices through mobile access. Compatibility with popular email apps guarantees users can configure their accounts using IMAP or POP3 protocols, enabling seamless synchronization and management of emails on smartphones.
What Should I Do if My Mailbox.Gr Account Is Hacked?
If a mailbox.gr account is hacked, the user should immediately change their password, enable two-factor authentication for enhanced account security, review account activity, and update spam protection settings to prevent unauthorized access and reduce further risks.
Does Mailbox.Gr Support Email Forwarding and Filters?
Mailbox.gr supports email forwarding, allowing users to redirect incoming messages to another address. Additionally, it offers email filters to automatically organize or manage emails based on specified criteria, enhancing user control and inbox management.
How Much Storage Space Does a Mailbox.Gr Account Provide?
A mailbox.gr account typically provides several gigabytes of storage space, ensuring ample room for emails. It supports email encryption and robust spam filtering to protect user data while managing storage efficiently.
About This Guide
The Mailbox.gr email settings on this page were last verified on April 12, 2026 against the provider’s official help documentation, publicly available postmaster resources, and independent user setup reports. Email server configurations rarely change once established, most providers issue major updates only every one to two years, typically tied to phasing out unencrypted protocols or migrating to new mail infrastructure. SMTPedia re-verifies these settings quarterly and after any announced changes from Mailbox.gr. If you find a discrepancy between what is documented here and what Mailbox.gr currently requires, please report it so we can update the reference.
About the Author

Alaa Β· LinkedIn
Email infrastructure specialist with 8+ years of hands-on experience in SMTP, deliverability, and email verification. Iβve configured and troubleshot mail systems across Postfix, Exchange, and cloud relays, managed IP reputation and warmup campaigns, and built verification pipelines processing millions of addresses. My work spans DNS authentication (SPF, DKIM, DMARC, BIMI), bounce handling, blocklist monitoring, and compliance frameworks including CAN-SPAM and GDPR. I write every article on SMTPedia to give email professionals, developers, and marketers the accurate, RFC-grounded reference they need.
About SMTPedia
SMTPedia is an independent email industry reference covering SMTP, IMAP, POP3, email deliverability, marketing platforms, DNS authentication, and email verification. Every article is researched from official provider documentation, IETF RFCs, and industry best practices. Settings and configurations are verified quarterly.
We are cited as a source by ChatGPT, Microsoft Copilot, and thousands of email professionals worldwide. Learn more about our editorial process.

