1&1 Webmail Login Guide (2026): Setup & Fixes
1&1 Webmail (now known as IONOS Webmail) is a professional email service that allows users to send, receive, and manage emails through a web browser. Whether you’re accessing your business inbox for the first time, setting up email on Outlook or an iPhone, or troubleshooting login problems, this complete guide covers everything you need to know about 1&1 Webmail login, IMAP, POP3, and SMTP settings.
1&1 Webmail Login: How to Access Your IONOS Email
1&1 Webmail is now known as IONOS Webmail. Existing IONOS Mail Basic and Mail Business customers can use the official Webmail portal to send and receive messages in a browser.
Official 1&1 Webmail login: https://mail.ionos.com/
Steps to Log In
- Open the official IONOS Webmail login page.
- Enter your complete email address, such as
name@example.com. - Enter the password for that particular email mailbox.
- Complete two-factor authentication if enabled.
- Sign in to access your inbox.
Important: Your IONOS customer-account password and your email mailbox password may be different. Use the credentials assigned to your mailbox when accessing Webmail.
IONOS Webmail IMAP, POP3 and SMTP Settings
Use these official settings when connecting an IONOS Mail Basic or Mail Business mailbox to an external email application.
| Protocol | Server | Port | Encryption |
|---|---|---|---|
| IMAP | imap.ionos.com | 993 | SSL/TLS |
| POP3 | pop.ionos.com | 995 | SSL/TLS |
| SMTP | smtp.ionos.com | 465 | SSL/TLS |
| Alternative SMTP | smtp.ionos.com | 587 | STARTTLS |
Username: Your full email address.
Password: Your mailbox password, or an appropriate app password when two-factor authentication requires it.
Which protocol should you choose? IMAP is recommended for most users because it synchronizes messages across devices. POP3 is more suitable for specialized setups where messages are downloaded locally.
How to Set Up 1&1 Webmail on iPhone
On iOS 18, open Settings → Apps → Mail → Mail Accounts → Add Account. Choose Other, then Add Mail Account.
Enter your display name, complete IONOS email address and mailbox password.
Select IMAP and use:
Incoming Mail Server
- Hostname: imap.ionos.com
- Username: Complete email address
- Password: Mailbox password
Outgoing Mail Server
- Hostname: smtp.ionos.com
- Username: Complete email address
- Password: Mailbox password
Tap Next and allow the device to verify the connection. Save the account when setup completes.
Menu names can differ in newer and older iOS versions.
Why Is My 1&1 Webmail Login Not Working?
If you cannot log in, check that you are using the correct mailbox password rather than your IONOS customer-account password.
Verify the email address, disable Caps Lock if necessary, and try a private browser window to rule out browser-specific problems.
If you forgot your mailbox password, the IONOS contract holder can reset it through the email-management section of the IONOS account.
If Outlook or Apple Mail stops connecting after you enable two-factor authentication, create an app-specific password through IONOS Webmail’s security settings and enter it into your email application.
For sending errors, confirm that SMTP authentication is enabled and that smtp.ionos.com uses port 465 with SSL/TLS or port 587 with STARTTLS.
How to Back Up IONOS Webmail Emails
Log in to Webmail and select the email messages you want to save.
Click the three-dot menu in the selection toolbar and choose Save as file.
A single email is downloaded as an .eml file. Multiple selected emails are downloaded together as a .zip archive.
For a full folder, select its messages before exporting. Rename backup ZIP files when necessary to prevent overwriting previous downloads.
Frequently Asked Questions (FAQ)
How do I change my password?
Log in to your IONOS dashboard, navigate to the email section, select the specific email address, and click “Change Password.”. The mailbox owner or contract holder may need to reset the email address’s password in the IONOS account. If two-factor authentication is enabled for Webmail, an app-specific password is required for clients such as Outlook or Apple Mail.
How do I back up my emails?
Log in to the webmail interface, select the specific emails or folders you wish to download, click the 3-bar menu icon, and select “Save as File.” This will download a .zip file containing your messages.
Also Read: Google Admin Console Login Guide 2026
Somany Goveswar
