On 4/20/22 07:51, Turritopsis Dohrnii Teo En Ming wrote:
I believe Gmail is using IMAP. The instructions for configuring Gmail email accounts in Outlook specifically mention IMAP server hostname:
imap.gmail.com
TCP Port 993, SSL
Indeed you CAN use IMAP with gmail. For work, I mostly use my email (which is gmail-based) via Thunderbird, with IMAP. I am familiar with it.
But if I use the Gmail app for Android or the gmail website, I feel absolutely certain that those applications are NOT using IMAP. Chances are that they use protocols developed by Google.
Regarding your next email on this thread, the initial sync of a large number of messages via IMAP does take a really long time. But once the initial sync is complete, syncing the differences is very fast. The big problem with accessing a large folder via a webmail app like Roundcube is that it never sets up a local copy of the mailbox. I actually don't know where the copy of all those message headers resides ... whether it is in the PHP interpreter or in the browser. But it's not persisted to disk as it would be with a more traditional IMAP client such as Thunderbird.
Thanks, Shawn