My emails used to sync perfectly between iPhone and Macbook. Once an email was read on either device it would show as read on both. Now, when I read emails on the Macbook they remain as unread on the iPhone. Does anyone know how to fix this?
Hello anthonyfromcroydon,
Welcome to Apple Support Communities. We'd recommend starting by isolating whether this happens on all accounts or seems to be related to a specific account.
If this happens with one email account or you do not have multiple email accounts on your iPhone and Mac, test in your provider's webmail to see what happens there. When you read an email there, does it sync? If so, which device syncs this change?
Next, use Mail - Official Apple Support to find your email settings by entering your email address. You can then make sure those settings are correct on your devices. From iPhone, go to Settings > Mail > Accounts > [Account name] > [Account] > Advanced. From Mac, go to Mail > Settings > Accounts tab > Server settings.
Best of luck.
Hello anthonyfromcroydon,
Welcome to Apple Support Communities. We'd recommend starting by isolating whether this happens on all accounts or seems to be related to a specific account.
If this happens with one email account or you do not have multiple email accounts on your iPhone and Mac, test in your provider's webmail to see what happens there. When you read an email there, does it sync? If so, which device syncs this change?
Next, use Mail - Official Apple Support to find your email settings by entering your email address. You can then make sure those settings are correct on your devices. From iPhone, go to Settings > Mail > Accounts > [Account name] > [Account] > Advanced. From Mac, go to Mail > Settings > Accounts tab > Server settings.
Best of luck.
Syncing issue: mail on iPhone shows as unread when same messages have already been read on Mac
