Good to know that webmail is working.
TalkTalk will rate limit overseas connections because of the higher risk of spam from non UK networks. Are you seeing a TT error code of three digits prefixed by the TT letters?
Do you have access to a VPN connection where you can select an UK Host Server. Mobile device Internet Security products often bundle in a VPN to enhance mobile security when using networks other than your home broadband network. But you need to use a UK Host Server because any overseas server may also be rate limited.
Or the alternative is to use a Gmail email address simply because of the global presence of Gmail there will be a local Gmail server near to your location and that can send on your emails to a Country server for delivery.
