Good to know that an email sent directly from the Gmail address to your TalkTalk Mail address is arriving which tells us that there is no block on sending or receiving mail to your Inbox.
A Group Distribution List mailing that does not arrive may mean that the Group send did not complete possibly because there are addresses on that List that do not exist or that are rejecting messages.
You may need to check in your Spam folder but you'd need to do so within a month of the mailing because the Spam folder contains only suspect spam mail for 30 days before the system deletes it.
Worth checking that you have no Rules set up to divert or reject mail.
Select here: Sign in to TalkTalk Mail
Enter your email address and password, select Sign in.
Mail not reaching the Inbox could mean there's a Filter rule that's diverting, discarding or blocking mail.
- Select the Main settings menu cog icon top right on the blue header
- Select All settings, or if using a mobile browser it's Menu then the cog icon for Settings
- Select Mail and scroll down to Rules
Select the chevron icon > to see all defined Rules
If there's no rule defined, that's perfect
- To delete a Filter rule including any Auto forward
select the X icon to the right of the rule
The icon background will turn red X
- To confirm you really want to delete this Filter rule
Select the blue Delete button
