On a number of occasions over the last few weeks, emails sent by other people to my Google Mail account have not arrived. They are not in the Inbox, Trashcan or anywhere else. The sender does NOT receive any bounced notification. Other non-Google Mail recipients included in the emails DO receive them. What could be causing this? The sending mail SMTP server? Google Mail's servers? It's very frustrating not knowing when/if other incoming messages are just being dropped. Suggestions?
Update: This issue resolved itself. All the "lost" messages appeared in my Google Mail box weeks/months later. Some arrived on one day and some the next day.