Thanks for your triplicate post on this same subject @MarkH4 in relation to Gmail dropping TalkTalk Mail sent by webmail into Gmail recipients' spam folders. Nothing you can do about that as it's a Gmail thing. You can send by email app or email client software and that does get received in recipient Inboxes as normal.
As for emails that are bounced back and not delivered to your Inbox, tell us what the TT three digit error code is that is returned to the sender. With the error code I can get a handle on why mail is not delivered.
