Overseas guidance

Please help!!

I'm heading abroad shortly and don't want to be hammered by data charges.

By filtering on BIS to header only, will this definitely prevent any attachments coming through?

When I tested it before, it came up with a figure of bytes remaining plus a bytes figure for the attachment. Presumably the first number is the text only data figure?

Also, it has the option of getting More or More All. What is the difference? Is it simply that "more" brings in the message body without bringing in the attachment?

Finally (I promise), is there any means of filtering by size of mail?

Thanks for your assistance

I've not seen any of my attachments get downloaded unless I choose the menu option... View attachment.