Need help syncing Notes between webmail and iPhone

After some further digging, I found the following information regarding syncing Notes between Yahoo accounts and iPhones.  In short, it appears that it is possible to partially "sync" Notes, but it is one-way (from iPhone to Yahoo), lands in a Yahoo email folder labeled "Notes", and is not editable in Yahoo (although still editable on iPhone and the updated Note will push out to Yahoo mail):

How the sync works

• After you sync at least 1 note, a new folder called "Notes" is created in Yahoo Mail.
• The notes are not editable from Yahoo Mail.
• From the Notes app, tap Accounts in the top-left to switch between synced accounts.

Results of syncing iOS "Notes" app with you Yahoo Account

• A "Notes" folder is created in your Yahoo Mail account, not your Yahoo Notepad. - Notes you create in the iOS "Notes" app under your Yahoo account will always appear in this folder.

• This is a one-way sync from your iOS device to Yahoo. - If you add notes to the "Notes" folder in Yahoo Mail, you won't see them in your iOS device's Notes app.

More at https://help.yahoo.com/kb/SLN5869.html

In my opinion, the Yahoo solution is a workaround at best, but not a true "sync" of Notes.  Does anyone have a more functional true two-way sync solution for Notes short of buying an Exchange Server (or going Mac ...)?

Thanks in advance for any suggestions?

A bit dated, but here is another description of the Yahoo - iPhone "sync" of Notes:  http://www.everythingicafe.com/sync-ios-notes-gmail-yahoo/