On both computer and iphone my emails disappear after 1 week and I need to retrieve them
If you are using Spectrum ISP-based email, read my solution here:
It sounds like you may be using several devices with different set ups.(POP and IMAP) I would encourage you to check any device that you receive mail on to make find out how they are set up.
I would highly suggest using IMAP for all of your devices. It allows you to view and manipulate your messages but keeps things synchronized. If you are using POP it will download the mail off of the server onto that device and they would not be available on other devices.
Hope this helps!
Spectrum-Social Media Customer Service
Lead Moderator-Community Forums