Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Website Help System

Email White List

 How to ensure receipt of Sigma-Aldrich emails

Add the following domain and email address to your address book:

Domain: sigma-aldrich.com

Email address: mailuser@sigma-aldrich.com

Allow or display images to ensure proper viewing:

Images can be enabled in most email programs by clicking on "Always allow (or display) images from mailuser@sigma-aldrich.com" when prompted upon opeing the email. This will allow future images from Sigma-Aldrich to be displayed without prompting.

Add Sigma-Aldrich to your address book or "whitelist." Instructions for popular email clients are below:

 Hotmail Subscribers

  1. Click on the "Save Address" link in the toolbar of your browser.
  2. Check the "Add to Contacts" checkbox.
  3. Click "OK."

 Yahoo, Verizon and SBC Subscribers

  1. Click on the "Add to Address Book" link at the top of your browser (next to the From Address).
  2. Once the "Add to Address Book" window opens, enter any optional fields, and then click "Add to Address Book."
  3. A confirmation message at the top of your screen will indicate you have added mailuser@sigma-aldrich.com to your Address Book.

    To allow or enable images:

  4. Click on "Mail Options" in the upper-right-hand corner of your browser.
  5. Click on "General Preferences" under the Personalization heading.
  6. Go to the Security section and uncheck the box marked "Block HTML Graphics in email messages from being downloaded."
  7. Click "Save" at either the top or bottom of your browser.

 Gmail Subscribers

  1. Click the drop-down arrow near the top of the email message.
  2. Click "Add sigmaaldrich.com to Contacts list."

 AOL Subscribers

  1. Click on the "Add Address" icon at the top of your browser.
  2. Ensure mailuser@sigma-aldrich.com is in the email field.
  3. Click "Save."

 Comcast Subscribers

  1. Click on the "Save Address" link at the top of the email (next to the From Address).
  2. Enter Sigma-Aldrich in the First Name field.
  3. Click "Save Entry."

 MSN Subscribers

  1. Click on the "Save Addresses" link in the toolbar.
  2. Check the "Add to Contacts" checkbox.
  3. Click "Save."

 SBCGlobal Subscribers

  1. Click "Mail Options."
  2. Click "Filters."
  3. Click "Add Filter."
  4. In the top row, labeled "From header:" make sure "Contains" is selected in the pull-down menu.
  5. Enter mailuser@sigma-aldrich.com
  6. At the bottom, where it says "Move the Message To:" select "Inbox" from the pull-down menu.
  7. Click the "Add Filter" button.

 Earthlink Subscribers

  1. Click "Add to Address Book" in the email header.
  2. Ensure mailuser@sigma-aldrich.com is correct in the "Address Book Editor."
  3. Click "Save.

 Juno/Netzero Subscribers

  1. From your mailbox screen click on the "Address Book" tab.
  2. Next to the "Lists" tab, click the "Add new contact" link.
  3. Type in or paste mailuser@sigma-aldrich.com into the "Email Address" block.
  4. Click "Save."

 AT&T Subscribers

  1. Click on the "Save Address" link (next to the From Address).
  2. Enter Sigma-Aldrich in the First Name field.
  3. Click "Save."

Thank you for whitelisting Sigma-Aldrich.