Gmail is super fast in sending and receiving emails across all popular domains. As a free account user, you can just send 25MB attachments. To send large files exceeding the 25 MB size limit, you need to use the Google Drive. Simply login to Google Drive using your Gmail username/password, now you can upload larger files here and send the direct link to the receiver. All your uploaded files/documents will remain saved in the Google Drive. If you are facing problems while sending/receiving emails or unable to upload/download attachments, then dial the Gmail Customer Support Number . This is a 24x7 helpline number, which connects the user with the email specialists. For alternative Gmail support helpline, visit the Contactforservice web-directory.