Umfragen&Sonstiges » How do I sync Yahoo mail between devices?

Sync the native iOS apps on your mobile device with your Yahoo personal info. It can take several minutes for the synced information to show up.
1. Tap Settings on your device.
2. Tap Accounts & Passwords.
3. Tap Add Account.
4. Tap Yahoo.
5. Enter your email address and tap Next.
6. Enter your password and tap Sign in.
7. Slide the "Mail," "Contacts," and "Calendars" sliders on. Know more

For more information: Yahoo Mail Customer Support Number | Yahoo Support Phone Number