How to Download Attachments from 1 & 1 Webmail to Computer?
You can download 1&1 webmail email attachments in bulk on Windows using the Email Attachment Downloader. The tool connects to your 1&1 (IONOS) email account via IMAP and saves all attachments to your PC with date range and file type filters available.
1&1 IONOS (formerly 1&1 Internet) is one of Europe’s largest web hosting and email providers. Many businesses use 1&1 webmail for their professional email addresses on custom domains. If you need to download all email attachments from your 1&1 account, the Email Attachment Downloader handles the bulk download automatically.
The tool connects to 1&1’s IMAP server (imap.ionos.com) and downloads all attachments from your selected email folders to a local folder on your Windows machine.
Why Download 1&1 Webmail Attachments?
Common reasons to bulk download 1&1 email attachments include:
- You’re switching from 1&1 hosting to a different provider and need to migrate your email data
- You have years of business documents, invoices and contracts stored as email attachments
- You want a local backup of all 1&1 email attachments before changing or closing the account
- Your 1&1 mailbox storage limit is nearly full and you need to archive older attachments
- You’re consolidating multiple business email accounts and need all attachments in one local location
Business email accounts accumulate more attachment-heavy emails than personal accounts. Contracts, invoices, proposals, design files and project documents all add up. For a business that has used 1&1 email for several years, the attachment library can be substantial.
1&1 is also known by its rebranded name IONOS. The IMAP settings work the same regardless of whether your account was created under 1&1 or IONOS branding.
The 1&1 IONOS email service is particularly common among small businesses in Europe and North America. A typical SMB using 1&1 for 5 years might have accumulated thousands of PDF invoices, Word documents, Excel spreadsheets and image files across their team’s email accounts. Downloading all of these manually one by one would be impractical.
The good news is that 1&1 IONOS email supports standard IMAP, which means any IMAP-compatible tool can connect to it. You don’t need special 1&1 software to access your email data.
What You Need
You need the Email Attachment Downloader installed on Windows and your 1&1 email credentials. The IMAP server for 1&1 (IONOS) is imap.ionos.com (or imap.1and1.com for older accounts) on port 993 with SSL. Use your full 1&1 email address as the username.
How to Download 1&1 Email Attachments
Follow these steps to bulk download attachments from your 1&1 webmail account.
Step 1: Launch the Tool
Open the Email Attachment Downloader after installation.

Step 2: Enter 1&1 Account Credentials
Enter your 1&1 email address and password. Use imap.ionos.com as the IMAP server (or imap.1and1.com for legacy accounts). Connect to load your mailbox folders.
Step 3: Select Folders
Choose the folders you want to download attachments from. For a complete export, select all folders.

Step 4: Apply Filters
Set date range and file type filters to narrow the download to specific periods or file formats.

Step 5: Set Destination and Download
Choose your output folder and click Download. The tool saves all attachments from 1&1 to your PC.


Key Features
The Email Attachment Downloader works with 1&1 (IONOS) and many other email providers:
- IONOS and 1&1 IMAP support: Connects to both current IONOS and legacy 1&1 email servers
- Business email ready: Handles large mailboxes with thousands of business attachments
- File type filtering: Download only PDFs, images, Office documents or specific file types
- Date range filtering: Target specific time periods for selective backups
- Folder organization preserved: Downloads reflect your 1&1 email folder structure
- Batch processing: Process all folders in one unattended operation
Limitations to Know
Limitations
- Windows only. No Mac version is available.
- 1&1 (IONOS) has two IMAP server addresses depending on when your account was created. Try imap.ionos.com first and imap.1and1.com if that doesn’t connect.
- The free trial has a processing limit. The full version removes this restriction.
- 1&1 accounts used for business email may have higher storage limits and more attachments, which means longer download times for complete backups.
- Inline images in email signatures and HTML email bodies are not downloaded as attachments.
- Password-protected or encrypted attachments are downloaded but require the original password to open.
Frequently Asked Questions
What is the IMAP server address for 1&1 IONOS email?
For current IONOS accounts, the IMAP server is imap.ionos.com on port 993 with SSL. For older accounts created when the company was still called 1&1 Internet, the IMAP server may be imap.1and1.com. Try both if you’re unsure which applies to your account. Your IONOS control panel shows the correct mail server settings under Email.
Can I download attachments from multiple 1&1 email addresses in one session?
The tool processes one email account at a time. To download attachments from multiple 1&1 addresses, run the process separately for each account. Set different destination folders for each account to keep the downloads organized.
Does 1&1 (IONOS) have IMAP access enabled by default?
Yes. All 1&1 and IONOS email accounts have IMAP access enabled by default. You don’t need to make any changes in your IONOS control panel to enable IMAP. Simply enter your credentials and the IMAP server address to connect.
What happens to business email attachments if I cancel my 1&1 hosting?
When you cancel your 1&1 IONOS hosting package, your email addresses and all their contents including attachments are deleted. Back up all important attachments before canceling. The bulk download tool can process your entire 1&1 mailbox before you cancel to ensure nothing is lost.
How does the tool handle attachments with the same filename in different emails?
When multiple emails contain attachments with the same filename, the tool appends a number to the filename to distinguish them (e.g., document.pdf, document (1).pdf, document (2).pdf). No files are overwritten during the download process.
Can the tool download attachments from 1&1’s shared inbox or team mailboxes?
If you have IMAP credentials for a shared inbox or team mailbox at 1&1, the tool can connect to it and download attachments the same way it does for individual accounts. Use the shared mailbox’s login credentials and IMAP server address to connect.
Does the tool work with multiple 1&1 email addresses on the same hosting account?
You can process multiple 1&1 email addresses, but you need to run the download separately for each one since each email address is its own IMAP account. If you have 5 email addresses under your 1&1 hosting account, run the tool 5 times with a different email address and credentials each time. Set a separate destination folder for each address to keep the downloads organized and avoid mixing attachments from different addresses.