HomeWhitelist Katusa Research

How to Whitelist an Email from Katusa Research

Last Updated: 2022

We wish these procedures were not necessary. Incidentally, they are. One of the realities on the internet today is unsolicited and unwanted emails. For that reason, email service providers such as (Gmail, Yahoo, Outlook, Mail, etc.) have made their spam filters more stringent.

The thing is, the more stringent the spam filters are, the more likely it is even for legitimate emails to be mistaken as spam. Fortunately, there are simple ways to make sure you continue receiving our valuable emails.

Adding an address to your whitelist ensures that email from that address will not be filtered as spam. The simplest and fastest way to whitelist us would be to add our email address – subscribers@katusaresearch.com – into your address book. The steps needed vary, depending on your email service provider.

If you have any issues with these instructions, please contact us at subscribers@katusaresearch.com.


Email Clients

Security Software & Spam Filters



To ensure our email gets delivered to your Gmail inbox, you must add our email address to your contacts list.

If you do not readily find an email from us…

  1. Please check your Gmail Spam Folder.
  2. If you see an email from us in the spam folder, open it.
  3. Click the button on the toolbar, labeled “Report not spam”.

Katusa Research - Report Not Spam

If our emails appear in the Promotions tab, do the following:

  1. In the Gmail Promotions tab, drag and drop our email to the Inbox Tab.
  2. After doing so, you will receive an alert like the one below at the top of your Gmail toolbar: “The conversation has been moved to “Inbox”. Do this for future messages from subscribers@katusaresearch.com.

Whitelist our email for all future communications:

  1. Click the settings button (in the top-right corner of the screen), then click “See all settings”
  2. Navigate to the tab labeled “Filtered and Blocked Addresses” to access information about your existing filters.
  3. Select “Create a new filter” and enter the emails or domains you want to whitelist. To whitelist a single email address, for example, type the entire address. On the other hand, if you’re trying to whitelist every sender from a certain domain, type the domain alone, such as “@katusaresearch.com”. This will tell Gmail to approve every message from a katusaresearch.com sender.

  4. Click “Create filter” to approve the new filter, then mark “Never send to Spam” to whitelist every email within the filter. You can also choose to Star these emails, apply a given label, or mark them as important.


Gmail Mobile App

  1. Open the Gmail application.
  2. Navigate to Spam or Junk Folder.
  3. Click on the message you wish to view.
  4. Select the option “Report not spam”.
  5. You will now receive messages from this sender as normal.


Yahoo! Mail

If you want to move a sender or domain name to your whitelist Yahoo Mail, the process is even easier than it is in the other service providers mentioned above.

As long as you have already received at least one message from the address in question, all you have to do is highlight that message in the Bulk folder and mark it as Not Spam. Once you have identified a single message from a given sender, the Yahoo Mail spam filters will automatically allow future messages from the same address into your inbox.

On the other hand, if you want to whitelist an email that hasn’t sent you a message, follow the steps below:

  1. Navigate to “Settings” icon, then click “More Settings” from the Yahoo Mail menu.
  2. From here, you can enter any string of text you want to whitelist in future emails. This could be anything from an email address or domain name to something you expect to be in the body of the message.
  3. Select a filter criterion and choose contains.
  4. Enter “Katusa” or “subscribers@katusaresearch.com” in the text box for Type a filter value.
  5. Choose the destination folder to which you would like the message delivered. For example: Inbox.
  6. Click Save and you’re done!


Yahoo! Mobile App

  1. Open Yahoo Mail Mobile App.
  2. Click on the sidebar.
  3. Click on the Spam folder.
  4. Find the email you wish to whitelist.
  5. Click “Move” and then click “Inbox”.


Apple Mail

To whitelist all email from a specific domain in the Mail app in Mac OSX or MacOS:

  1. Select Mail Preferences from the menu bar in Mac OS X Mail.
  2. Click the Rules
  3. Click Add Rule.
  4. Type “Whitelist: katusaresearch.com” in the description field to identify the new rule.
  5. For the conditions, set the first dropdown menu item to any, so that it reads: If any of the following conditions are met.
  6. In the next two dropdown menus, select From in the first, and Ends with for the second.
  7. In the text field following Ends with, enter @katusaresearch.com.
  8. In the Perform the following actions section set the three fields to Move Message, to the mailbox, and Inbox or a different target folder.
  9. Click OK to save and you’re done.

Setting Rule Order in Mac Mail App

The order of the rules you have set matters and Apple Mail executes them one after the other, moving down the list. If you have multiple rules, then you might need to ensure that the rule you’ve just created is executed before others. Click and drag that rule to the top, or near the top, of the rules list.


Outlook Desktop App


  1. Open Outlook from a computer and make sure you are logged in.
  2. On the Home tab, click on the Junk icon and click Junk E-mail Options.
  3. In the Safe Senders tab, click Add… and type in: @katusaresearch.com.
  4. You are done. All future emails coming from us will arrive in your inbox.


Outlook Mobile App


  1. Open Outlook Mobile App.
  2. Click on the message that you want to whitelist.
  3. Click on the three dots in the top right corner (not the dots inside the email).
  4. Click “Move to focused inbox“.
  5. When the pop-up screen comes up, click “Move this and all future messages“.


Outlook.com, Hotmail.com, MSN.com, Live.com


  1. Click on “Settings”, then “View all Outlook settings”.
  2. Go to “Junk email”, then choose “Safe senders and domains” or “Safe mailing lists” to select the domain or email you want to whitelist.
  3. Click “Add” and type katusaresearch.com to Safe senders and domains. Press Enter on your keyboard to save.
  4. Under Safe mailing lists, click “Add” and type subscribers@katusaresearch.com and press Enter on your keyboard to save
  5. Press the blue Save button at bottom right and you are done.
  6. Alternatively, you can simply add an individual email address that has sent you a message to your Outlook Contacts. Though they lead to the same result, this method is quicker and more efficient than manually entering information.


AOL Webmail (mail.aol.com)

Add Aol Mail Contact

  1. Open Aol Mail, click on Contacts.
  2. Click on New Contact icon.
  3. Enter all the information, especially the email address.
  4. Click on Add Contact.
  5. Write Marin Katusa for the name, and subscribers@katusaresearch.com as the email.
  6. Press Add Contact and you’re done.

Unmark email as spam

  1. Open Aol Mail on your web browser.
  2. Click on the Spam folder.
  3. Open the desired email.
  4. Click on the Not Spam (OK) icon at the top of the page.
  5. Now email will return to your Inbox.


Comcast Webmail (Xfinity)

  1. Open Xfinity Connect and log into your account using your Comcast username and password.
  2. Click on the gear icon on the top-right corner and then click Email Settings.
  3. On the left menu, under Mail, choose Advanced Settings.
  4. On the Advanced Settings page, check the box next to Use email safe list.
  5. Click Add an email address.
  6. Enter subscribers@katusaresearch.com into the field and click Add.
  7. To add an additional address, click Add an email address.
  8. To remove an email address, click the trashcan icon to the right of the one you wish to remove.
  9. To enable and disable the email safe list, click Use email safe list. If the checkbox is checked, the Email Safe List is enabled.
  10. When finished, close the page.

EarthLink Webmail

  1. Go to EarthLink webmail and login with your email address and password
  2. Select Address Book.
  3. Select New Contact.
  4. Type katusaresearch.com in the text field.
  5. Select the Save button.


Currently.com, AT&T – Yahoo Email

AT&T emails have been moved to yahoo.com

The instruction to whitelist is the same as our Yahoo instructions here (click).

How to Migrate AT&T Email to Yahoo?

Follow the steps to migrate emails from AT&T to Yahoo-

  1. Download & Open software on Windows.
  2. Select AT&T service and enter email login details.
  3. Choose desired mailboxes for conversion.
  4. Pick Yahoo and specify account login credentials.
  5. Start to migrate AT&T email to Yahoo.


Mozilla Thunderbird

To add an email address to your whitelist inside Mozilla Thunderbird please follow the steps below:

  1. From the menu select Tools – Account Settings
  2. Select ‘Junk Settings’
  3. Make sure there is a check next to ‘Enable adaptive junk mail controls for this account’
  4. For the option ‘Do not automatically mark email as junk if the sender is in:’ select the address book you want to use as a whitelist.

Any contacts in the address book will not have their emails marked as junk.

You can also add contacts to your address book from the email message directly. Just right click on the email itself and click on ‘Add to address book’.


BigPond (Telstra Mail)

bigpond telstra mail

Add our email to your Telstra Mail contacts book.

  1. Sign into your Telstra account onilne.
  2. Click ‘webmail’.
  3. In webmail click ‘settings’ in the top right-hand corner.
  4. In the left-hand column select ‘Mail’ and then ‘Safe senders’.
  5. Add subscribers@katusaresearch.com as a safe sender.


Spectrum Webmail (Charter)

Spectrum Charter

Spectrum Webmail is now a part of Charter. Add us to your contacts.

  1. Sign in to your Spectrum (Charter) Email account.
  2. Select the Settings tab (top)
  3. Select Filters & Blocked Senders from the left navigation.
  4. Under the Safe Senders header, enter subscribers@katusaresearch.com in the box under Email Address or Domain.
  5. Select the Add button.


GMX Mail


  1. Click on Settings.
  2. Select Allowlist.
  3. Enter subscribers@katusaresearch.com in the Email/Domain field.
  4. Press Save and you’re done.


Godaddy Workspace Webmail

  1. Log in to GoDaddy Webmail with your email id and password.
  2. Now from the Settings menu, click on Message Filters.
  3. Click on Allowed List
  4. Select Add New.
  5. Enter subscribers@katusaresearch.com. 
  6. Click OK and you’re done.


Symantec.cloud (MessageLabs)

symantec.cloud messagelabs

Formerly called MessageLabs, Symantec.cloud is an enterprise system that can set email rules at an organizational level. Please message your system or tech admin to whitelist our email. You can copy and paste the instructions below, or use them yourself.

  1. Select Services > Email Services > Anti-Spam.
  2. Ensure that Global Settings is selected in the domains drop-down list.
  3. Click the Approved Senders tab.
  4. Click the Add Entry option.
  5. The Domain/Email/IP and Description fields become editable.
  6. In the Domain/Email/IP field, enter katusaresearch.com.
  7. In the description field, you can enter Katusa Research.
  8. Click Update and you’re done.




  1. Log in to your mailbox at apps.rackspace.com.
  2. Click your email address in the upper-right corner and select Settings from the menu.
  3. Click Spam Settings on the left-hand side of the pop-up box and then click the Safelist tab.
  4. In the Safelisted Domains & Email Addresses, click Add.
  5. When prompted to Add Safelisted Domain or Email Address, enter the domain katusaresearch.com and email address of subscribers@katusaresearch.com in the field under Enter a domain or email address and then click Add.
  6. Confirm that the address now displays in the box under Safelisted Domains & Email Addresses and click Save.


Whitelist an Email in a Security Software and Spam Filter

Certain firewall and security programs can block our emails. This is most likely to affect desktop-based email programs like Outlook, Thunderbird, and Apple Mail. If you have already whitelisted our email inside your desktop-based email programs, then you may also have to whitelist us in your security programs to ensure guaranteed delivery of our alerts and notifications.


McAfee SpamKiller

mcafee spamkiller

  1. Click Friends.
  2. Click Add.
  3. Type subscribers@katusaresearch.com at “From Email” address.
  4. Optionally, enter Marin Katusa to help you recognize the domain under Name.
  5. Click OK and you’re done.


Norton AntiSpam

Norton Antispam

Norton works along with Outlook, Outlook Express, Netscape and Yahoo, MSN/Hotmail to block spam emails before they reach your inbox. To make sure emails reach you, you can add us to your Personal Friends list or Global Friends list. Here is how you can do that:

Check to make sure our email is not in your Blocked List.

  1. Open Norton AntiSpam, and open the My Norton window, next to Device Security.
  2. Click settings.
  3. In the settings window, click AntiSpam.
  4. On the Filter tab, next to Blocked Lists, click configure.
  5. In the Blocked List window, check to see if our email is in it: subscribers@katusaresearch.com. If so, select and remove that email from your Blocked List.
  6. Click Apply, and then click OK.

How to whitelist our email:

  1. Start Norton AntiSpam, select Status & Settings tab.
  2. Select “AntiSpam”.
  3. Select Configure button on the bottom right-hand side of the screen.
  4. Select the Allowed List tab – second tab on the list of tabs.
  5. Select Add.
  6. Enter subscribers@katusaresearch.com in the Email address box.
  7. Select OK.




Apache SpamAssassin is usually controlled by your server or tech admin. Please contact the individual responsible and send them the following instructions:

  1. Add the following entry to user_prefs file, found in the .spamassassin subdirectory on your web/mail server
  2. Whitelist_from subscribers@katusaresearch.com.
  3. Save the user_prefs file or move the updated copy to your .spamassassin subdirectory.


Trend Micro (Hosted Email Security HES)

Trend Micro

  1. Log on to the HES console.
  2. Click Inbound Protection > Connection Filtering > Sender Filter > Approved Senders.
  3. Add the domain @katusaresearch.com and click Approve Sender.
  4. Add the domain @katusaresearch.com and click Add to List.
  5. You’re done.


Barracuda Networks


To add specific senders to the Allowed Senders list:

  1. Click the menu button in the top left corner, select Spear Phishing Protection.
  2. In the top right corner, click the Settings icon settingsGear.png to access the administrative functions.
  3. Select the Allowed Senders tab.
  4. Click Add Allowed Sender.
  5. In the Sender Email or Domain section, enter the domain name katusaresearch.com.
    Note: Based on the safety note above, the system allows you to enter only one sender at a time, rather than adding in bulk. Enter one domain or email in this field and complete the steps below. Repeat the process, as needed, for each additional email or domain.
  6. Optionally, add a note in the Comment field.
  7. Click Save.
  8. Complete steps 4 through 6 for any additional senders you want to allow.



Blackberry mail app

If you have an enterprise account with BlackBerry, please follow the instructions by clicking the link here.




SaneBox is an innovative email filtering tool trained by you.

  1. Add our domain with the “Find a domain” box: katusaresearch.com.
  2. Set Train to: INBOX.
  3. Select Override training.
  4. Make sure to Enabled is set to ON, and you’re done.




To be sure that all emails from people in your Outlook contacts get through to you, you can import and Whitelist them.

To do this, follow these steps:

  1. Click “More” in the SPAMfighter toolbar.
  2. Then “Options”
  3. Then “Filter settings”
  4. Then “Blacklists & Whitelists”
  5. Then “Whitelist email address”
  6. Then “Import”.
  7. Select your ‘Address Book’ and click on “Check all”
  8. Click “Add”
  9. Click “Apply”


MailWasher by Firetrust

Mailwasher by firetrust

MailWasher is a free software that works with multiple email providers.

  1. Click Tools, then Blacklist & Friends.
  2. Click Add… on the right, the Friends list side.
  3. Make sure Plain email address is selected.
  4. Type: subscribers@katusaresearch.com
  5. Click OK.
  6. Click OK again and you’re done.