"There is no longer a send/receive option to force mail delivery."
There's also some glaring missing features like exporting contacts. I'd forget this app. Go get Thunderbird now so you can have it all, PLUS be ready to move your stuff to other PCs and even OSes.
Is there a way to manually check for new mail in windows 10 mail? There is no send/receive button as in all other mail programs.

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