Over the last few weeks i have had problems recieving emails with pics attached

Whenever i get pics sent they take for ever to come through

example ,, Say i have 8 emails to come through but number 6 has the pics the first 5 come through but the email with pics wont and it times out and then re tries and sends the first 5 again and again until eventually the email with pics comes and completes all the emails

when the pics do come through there always massive

I have been trying to recieve and email now for near 24 hours but it just wont come and its sending the other 9 before it over and over again

Please help