Since you are internet email, you should be able to delete an email from any device, and thaat should delete that email from all devices
Try to make Yahoo email, more like internet email. I had Yahoo on 3 devices, but got sick and tired of deleting SPAM email on all 3 devices. Why is yahoo email doesn't act like internet email, is pushing me over to gmail.
Richard Arrata
shared this idea
You might want to set your accounts to use IMAP server settings, it allows 2-way syncing, which means everything you do remotely is reflected in your Yahoo Mail account no matter where or how you access it. Here are the settings you’ll need to configure your mail client or app: https://help.yahoo.com/kb/sln4075.html
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Debra Andree
commented
I'm finding my email does not sync between devices,. I can delete emails on my desk top, but they are still there on my cell phone. Same thing if I delete on cell phone, those emails are still active on my desk top. I'm having to delete everything twice!