Plus addressing and subdomain addressing on Android
 

Hello,

Plus addressing and subdomain addressing are very nice features of Fastmail but I couldn't find an offline email client for Android which can easily use these features (Fastmail app is online only and specific to Fastmail).

Basically I would like to be able to:

1. Send from an email address whateveryoulike@user.example.com or user+whateveryoulike@example.com without necessarily creating an identity/alias first
2. When receiving an email to whateveryoulike@user.example.com or user+whateveryoulike@example.com and replying to these emails, the sender's address should be automatically set to these email addresses without necessarily creating an identity/alias first

On a normal computer, we can use Thunderbird with the Virtual Identity plugin.
On Android, so far I haven't found anything.

Do someone know an Android app which does this ?

Thanks

have you tried to official Fastmail app on Android? Whatever setting you create on the web interface is consistent and available on the Fastmail app.

Well I did mention it:

my apologies. Haven't had my fill of coffee yet this morning :(

The Aqua Mail Pro version, as I recall, has some support for identities (but not "on the fly" addresses). I have not used it for a while but, if looking for a feature rich Android Mail client, this is about the best I have seen. Take a look and see what you think.

Yes, it had identities. Same as K-9 mail (open source and without the Flurry tracker compared to Aquamail).
However it is indeed not possible to have "on the fly" addresses like Fastmail.

Even on the desktop, I haven't found much except Thunderbird + Virtual Identity.