Where is the send and receive button in outlook (New Outlook for Windows)

So a Yahoo imap account must be set to over an hour as far as microsoft is concerned? My android phone, nor the old windows mail doesn't think so, but the new outlook just sat there for over an hour after the mail was retrieved by my phone. Again, an erroneous response from an MVP, but a response none the less.

It's worse than the Classic by 10/5/2023. It sometimes loses IMAP folder access. Can't force a manual sync with an IMAP server because there's no button for it. Auto-sync might work ONCE, then misbehaves thereafter, because apparently Microsoft Cloud is causing unnecessary interference somewhere that my ISP does NOT approve of. Sometimes I can remove an IMAP account and add it back and the client will somewhat work okay for a few moments, then BAM, right back to choking and misbehaving. If I try to add an account manually with advanced settings, then I can't see any of the security protocol options and have to guess at them. So far I've figured out the options are, Auto SSL/TLS, StartTLS only, an NONE (not good). If you know the account runs better with a SSL-only port on SMTP, then you're screwed there as well, because it only defaults to StartTLS (an erroneous assumption from "none") and won't send the email. Just like FLUKE says - It's absurd!

 I'll tell you what. Here's what I've decided to do. - Uninstall all Outlook Mail, forget it, and return to using my ISP's webmail page. Probably what I should've been doing the whole time anyway. They've got glitches too (cosmetic), but it's nothing like this mess.

Mine came up today with New instead of Pre.... but it is still a beta / preview build (even though it says "production" in the version).

Right now the difference between Outlook on the web and new Outlook is the app framework - it is still Outlook on the web and works just like Outlook on the web - mail is not stored offline, so you don't need a send / receive button. Disconnect from the internet and you won't have mail.

I just tried closing New Outlook and restarting and it won't open, and does not give me the option to revert to Old Outlook.

The new Outlook for Windows can't be used offline at the moment. But this will change in the future (it is unclear when, though). See https://support.microsoft.com/en-us/office/getting-started-with-the-new-outlook-for-windows-656bb8d9-5a60-49b2-a98b-ba7822bc7627.