Fastmail and Viv M3 Mail

[CWM030]

I am wondering what am I doing wrong here:

New fastmail account
Set to Labels instead of folders

When I create a label in VIV M3 Mail, it doesn't show up on the Fastmail server, and if I move the email to the Fastmail ARCHIVE Folder, the email no longer shows up under the label?

I can create a "Folder" and move the email to that "Folder" aka Label and see both M3's internal label and the email shows up on the server under the "Folder" aka Label.

I am curious what am I doing wrong here.. Is Viv's Labels only internal to VIV M3? AKA Fastmail's IMAP server can't see that labels?

I am * Kind of * new to M3... I've tried it in the past ( about a year or two ago ) and thought that it needed more work, and I thought well its been a LONGGGGG time since I've tried M3, let me try it again.

Thanks!
Q4OS Trinity Desktop
Vivaldi 6.7.3329.41 (Stable channel) stable (64-bit)

[DoctorG]

I see on my mail server that Vivaldi Mail sets a user-defined label as a IMAP Flag.
So it is a proof Vivaldi sends it to a IMAP mail server.

If you think it is a bug with Vivaldi on FastMail, please report issue to Vivaldi bug tracker. Once that is done, share the bug number (beginning with VB-) you got by bug report mail. Thanks for helping us making Vivaldi better.

[DoctorG]

@CWM030 How do you check that the IMAP flag (=label) is not set in mail?

[CWM030]

@DoctorG Because, I can create a label in VIV, lets say

Create new Label

ARCHIVES_2024

Hit enter

then go to fastmail.com's webmail and its not there.

But, if I create a new "folder" ( aka Label ) in Viv, I can see it in both webmail and M3.

Also, if you ARCHIVE emails to Fastmail's default Archive folder, it removes the email from the label inside of M3. Meaning, if you click on the label in M3, The email isn't there.

[CWM030]

@DoctorG VB-107341

[yojimbo274064400]

@CWM030,

You are not doing anything wrong. The issues raised by your posts are likely due to:

1. Vivaldi's email client showing labels stored on server by other clients and other clients not providing similar functionality; hence it is not a surprise to read Fastmail's email client does not show labels create by Vivaldi's email client.

2. IIRC Fastmail uses JMAP (JSON Meta Application Protocol - Wikipedia) to access the underlying mail store data model from their web client and apps. The data model also provides IMAP clients with access to the mail store. The remaining issues raised are attributable to the use of JMAP and IMAP :

   • Archived message is stripped of it labels and when un-archived they are restored. Consider raising this issue with Fastmail
     Correction: Archived messages within Fastmail are no longer listed under their Fastmail label but do maintain labels set by other email clients. Please ask Fastmail to explain why they chose to do this, i.e. it is a feature and not a bug
   • Unlike the handling of labels synchronising of folders between server and clients is well defined . That messages in a particular folder appear under a label in Fastmail when Organize messages with label is enabled is due to their use of JMAP

If further or more detailed explanations are required post back here with your questions.