I use an email account of several dozens of Giga, on computer and Smartphone. However, most applications use a local index to speed up the search of emails (this is the case of Outlook and Thunderbird on computer). However, on a cell phone, the memory/battery/performance does not allow to have a correct index when the mailbox is too big, and the applications are often limited to propose a search on the last weeks. However, my IMAP server is compatible with the Full Sring search (via Apache Solr) very quickly.
Do you know a mobile application, allowing to deactivate the local search, to make an instant search via IMAP ?