One of the biggest problem in 1and1Mail old version is that if you import 500K emails in a single file into the software, most likely, 1and1Mail will freeze and crash. It’s because 1and1Mail was using the outdated Microsoft Access database.

However, it is not the case any more! We have upgraded our database to the latest SQL version and can handle a huge list at a much faster speed!

Meanwhile, we also added other exciting features and fixed some minor bugs in v4.8. Let’s take a look.

New Features

  • Random Macro can be hidden
    Hide Random Text
  • Can check duplicate emails in the whole Address Book during import
    Check Duplicate Email during Import
  • Can show duplicate emails in the whole Address Book
    Show Duplicate Emails in Address Book
  • Can customize date and time format
    Customize Date and Time Format
  • Can clear all the emails in an Address Book or Address Group
    Delete all emails in the address book
  • Can support strings longer than 3000 characters


Improved Features

  • Optimize the database of Address Book. Speed has increased 10x for importing, deleting, copying and moving
  • Limit the minimize width of the columns in Address Book
  • Can see testing status of email accounts after export
  • Can disable duplicate email checking during import to increase import speed
  • Allow larger file import
  • Can show the current staus of the email account when the task is ongoing
  • Update error message list


Bug Fixes

  • Fail to export if the Address Book contains special characters
  • Wrong pagination after import
  • Fail to import emails with a single character before @
  • Fail to display the correct language

Please download 1and1Mail v4.8 here.

Today 1and1Mail announced a major upgrade of its email marketing software for small and medium businesses. The upgrade includes a revolutionary new feature called Auto IP Switcher that increases email deliverability rate to a new level.

"In an email marketing campaign, Auto IP Switcher can increase the inbox placement rate by at least 30%," said Bill Graham, CEO of 1and1Soft. "It ensures your emails will be delivered accurately and safely to your clients' inbox."

Auto IP Switcher prevents sender's email accounts from being blacklisted and enables email marketers to send more emails out per day. It is most effective when working with multiple free email services, such as Gmail, Hotmail, Yahoo! Mail and AOL Mail.

Multi Account Manager is another feature that differentiates 1and1Mail from other mass mailing software. Through accurate grouping and segmentation of sender's email accounts in Multi Account Manager, email marketers are able to better organize their marketing campaigns and reduce the risk of being considered as a spammer.

"Our goal is to minimize the marketing cost and maximize the email marketing efficiency for our clients. I believe the new version can significantly boost 1and1Mail's market share," Bill continues, "we roll out an upgrade every 3 months and each upgrade is based on hundreds of customer feedbacks and new feature requests. That's why we have been growing so fast."

New 1and1Mail Free Edition downloads can be found at

1and1Mail - Send mass emails

About 1and1Mail

1and1Mail is free email marketing software specifically designed for small and medium business worldwide to create, schedule and send personalized mass emails, manage email contacts and design email newsletters.

1and1Mail differentiates itself from other mass mailing software by offering unique features that can greatly boost your email deliverability and lower your email marketing cost. These features include Automatic IP Switcher, Multi-threaded Sending, Email Template Downloader and Multi Account Manager. With 1and1Mail, you are able to not only send more emails to your customers per day, but also build a better corporate image with professional and well-designed email templates.

1and1Mail 3.1 is released on Mar. 5, 2011. Here are the updates and bug fixes to the new version.

  • Added support of import/export Excel files (.xlsx, xls)
  • Added support of local pictures in email newsletters
  • Enhanced system tray feature
  • Enhanced email template management
  • Added support of multi-national character sets (UTF-8, ISO-8859-1, ISO-8859-2, windows-1250, IBM852, GB2312, HZ-GB-2312, Big5, EUC-KR, ISO-2022-KR, EUC-JP, ISO-2022-JP, cp866, ISO-8859-5, KOI8-U, KOI8-R, ISO-8859-8, ISO-8859-8-I, ISO-8859-7, ISO-8859-9, ASMO-708, ISO-8859-6, windows-1256, ISO-8859-4, windows-1257, ISO-8859-3, windows-1258, IBM775)
  • Enhanced email settings (reply-to address, request read receipt, priority, sender, etc.)
  • Improved HTML email support
  • Some bug fixing

Please download it here.

1. How much does upgrade cost?

Upgrading 1and1Mail is free forever!

We, like you, hate ongoing costs (monthly charge, yearly renewal fee, etc.). Therefore, starting from 1and1Mail 3.0, we have decided to make 1and1Mail upgrade free forever.

2. If it is free, how do we make money continuously? Will we die soon?

We believe in word-of-mouth marketing. We believe as long as we keep improving our software and helping you save costs, more and more customers would come to us and support us.

3. How can I get the upgrade version anyway?

If you are 1and1Mail Free Edition user, you can always download the latest version from our website or other software download websites.

If you are 1and1Mail Personal Edition or Business Edition user, we need your help to perform a simple action before we send you the latest version. The action is usually like giving us feedbacks on how to improve our software or website, or something very easy to complete. The feedbacks do not need to be positive and we welcome negative comments or complaints. We sincerely value your input to support our ongoing development.

Usually, the upgrade version of Free Edition will be released first to the public. After sufficient testing and debug, we will release the final upgrade to our customers. The process usually takes 30 days.

Details will be announced through emails when the new version is released. The easy-to-complete action may vary every time, but do not worry! It won't take you more than 2 minutes to complete.

Have any thoughts or suggestions about the upgrade we offer? Send us an email at

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