[iamjaeger]

using Z10 BB OS 10.2.1

If you look at

A1 https://www.dropbox.com/s/n17qtklwpkp3yo0/A1.png?dl=0
A2 https://www.dropbox.com/s/fdd8dyrepgyrmqr/A2.png?dl=0

you can see that I have created a draft "to Dropbox" from blackberry Z10, it didn't show up on fastmail web app. you can also see that I have created a draft "to Fasianah" from fastmail web app, it does show up on blackberry Z10

If you look at

B1 https://www.dropbox.com/s/fu4z9kux8qse8cz/B1.png?dl=0
B2 https://www.dropbox.com/s/h274b2z610gswd3/B2.png?dl=0

you can see that I have edited a draft "to Fasianah" from blackberry Z10, it didn't show up as edited, on fastmail web app.

[menshawy]

Go to Settings > Accounts > choose your email account > Folder to Sync > make sure that draft folder is selected