Configuring GMX.at for use outside its native webmail requires attention to a few provider-specific rules. GMX.at, operated by 1&1 Mail & Media and launched in 1997, is the Austrian variant of GMX, a major free-email provider in the DACH region. It serves part of the GMX family serving over 11 million German-speaking users and its client-access model is more constrained than most people expect.
The essential technical note for anyone setting up GMX.at in an external client: GMX.at requires POP3/IMAP access to be explicitly enabled in the webmail settings before external clients can connect. Miss this step and every setup attempt will fail with an authentication error, regardless of how correct the server hostnames and ports are.
This guide documents the exact IMAP, POP3, and SMTP values that work today for GMX.at, including shared infrastructure with GMX.de, GMX.net, and Mail.com. If you follow the settings below in order, both inbound and outbound mail should flow on the first connection attempt.
Key Takeaways
- GMX POP3 server: pop.gmx.at, port 995 with SSL/TLS encryption, requires username and password authentication for secure email download.
- GMX IMAP server: imap.gmx.at, port 993 with SSL/TLS, supports folder sync, read status, and message flags for efficient email management.
- GMX SMTP server: smtp.gmx.at, ports 587 (STARTTLS) or 465 (SSL), requires authentication with GMX credentials for secure email sending.
- Use SSL/TLS encryption on IMAP port 993 and POP3 port 995 to ensure confidentiality and data security during email communication.
- Proper configuration of incoming and outgoing servers with authentication ensures seamless synchronization and secure transmission of GMX emails.
Gmx.At Server Configuration Details
The Gmx.at server configuration details provide essential information for setting up email clients to send and receive messages through the GMX platform. Understanding these settings guarantees seamless communication via the gmx.at server, which functions as a reliable email server for users. Correct configuration prevents connectivity issues and enhances email delivery performance.
| Parameter | Value |
|---|---|
| Incoming Server | mail.gmx.at |
| Outgoing Server | mail.gmx.at |
| Incoming Port | 110 (POP3) |
| Outgoing Port | 587 (SMTP) |
These specifications form the foundation for integrating the gmx.at server into various email clients, streamlining the process of accessing and managing email accounts effectively.
IMAP Port and Security
IMAP port and security settings are essential for establishing a secure and efficient connection to the GMX email server. Proper configuration ensures data integrity and confidentiality during email synchronization.
GMX employs specific port numbers combined with encryption protocols to safeguard user communications.
Key considerations include:
- Port 993 is the standard for IMAP over SSL/TLS, providing encrypted transmission.
- Encryption protocols like SSL/TLS prevent unauthorized access and eavesdropping.
- Using the correct port number ensures compatibility and reliable server communication.
Adhering to these settings optimizes email retrieval while maintaining security standards. Users must configure their email clients to use port 993 with SSL/TLS enabled for seamless and protected IMAP access to GMX servers.
POP3 Server Connection Details
POP3 server connection details are essential for users who prefer downloading emails to their local devices for offline access. GMXβs POP3 server supports secure connections to guarantee email encryption, safeguarding data during transmission.
Efficient server response minimizes server latency, allowing faster retrieval of messages.
Key POP3 server connection details include:
- Server address: pop.gmx.at
- Port numbers: 995 for SSL/TLS encrypted connections
- Authentication requirement: username and password for secure login
SMTP Server Configuration Details
While POP3 handles incoming mail retrieval, sending emails requires configuring the SMTP server correctly. The SMTP server settings for Gmx.at guarantee reliable delivery and secure transmission. Proper configuration minimizes server latency and supports robust email encryption, safeguarding data during transit.
Key SMTP details include the server address, port number, and authentication requirements. Users must pay attention to enabling SSL/TLS encryption to protect credentials and message content.
Important aspects of Gmx.at SMTP configuration:
- Server address: smtp.gmx.at
- Port numbers: 587 (STARTTLS) or 465 (SSL)
- Authentication: Required with a valid username and password
Correctly setting these parameters optimizes email sending performance while maintaining security standards against interception or unauthorized access.
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 Forgotten GMX.At Email Password?
To recover a forgotten GMX.at email password, the user initiates a password reset via the login page, then verifies identity by answering security questions or using a linked recovery email or phone number to regain account access securely.
Can I Use GMX.At Email on Multiple Devices Simultaneously?
Yes, GMX.at supports multiple device synchronization, allowing simultaneous access to emails across various devices. This guarantees users can manage their inboxes efficiently, maintaining up-to-date information regardless of the device being used at any given time.
What Are the Storage Limits for GMX.At Email Accounts?
GMX.at email accounts typically offer generous email storage, with account quotas around 1 GB to 10 GB depending on the plan. Users should verify specific limits, as storage capacity may vary by subscription and service updates.
How Do I Enable Spam Filtering on GMX.At Email?
To enable spam filtering on gmx.at, the user accesses settings and activates spam filtering setup. Suspicious emails are then automatically moved to email quarantine, allowing review or deletion to maintain inbox cleanliness and security.
Is GMX.At Email Compatible With Mobile Apps?
GMX.at email supports mobile app compatibility, allowing seamless email synchronization across devices. Users can configure their accounts on various email apps, ensuring access to messages, folders, and real-time updates for efficient mobile communication.
About This Guide
The Gmx.at 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 Gmx.at. If you find a discrepancy between what is documented here and what Gmx.at 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.
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