I have been receiving some important emails from my bank at an email id provided by my ISP for several years now. For the last 2 weeks , I have suddenly stopped receiving the emails. My bank says that there is no problem with their email server (they sent me their mailing records) and my ISP also claims that there is no problem with their email server.
Both are large , reputed companies but my emails (atleast 40 , sent at different times) disappear into thin air.
Are email servers only 70-80% reliable,are only 80% of emails sent to a valid email id delivered?
