[Bug] Archive fails for every message on a personal Outlook account (Graph)

[Paula129419]

Where in the app

Something else

What happened

On my outlook.de account (Sign in with Microsoft, Graph), archiving
fails for every message. Selecting 4 emails and choosing Archive gives:

"Archived with 4 error(s)" / "0 von 4 E-Mails" / "4 email(s) failed"

The same action works on my IONOS (IMAP) accounts. Sending from the
Outlook account works since 2.19.0.

Possible cause, from reading the source: saveEmailsLocally always
calls archive_emails, and archive::run / fetch_and_store in
src-core/src/archive.rs fetch through the IMAP pool only. I could not
find a Graph branch there, so a Graph account is dialled over IMAP
with its Graph token. I have not seen the underlying error text; the
panel only shows the count.

What you expected instead

The selected messages are saved to the vault, as on IMAP accounts.

Steps to reproduce

1. Open a folder of a personal Microsoft account (outlook.de, Graph).
2. Select one or more messages and choose Archive.
3. The panel reports every message as failed.

MailVault version

2.19.0

Operating system

macOS (Apple Silicon)

OS version

27.0.1

How you installed it

DMG from mailvaultapp.com

Mail provider

Outlook.com / Hotmail (personal)

How you sign in to it

Sign in with Microsoft (OAuth2)

How many accounts it affects

One account only

How often it happens

Every time

Did any mail get lost?

No — nothing is missing

Logs and screenshots

Before you post

• I'm on the latest release and checked the changelog
• I searched Bug Reports for the same thing
• No passwords, tokens, or other people's addresses in this report

[rokas-ambrazevicius]

Thanks for the precise report, your reading of the source was right. Archive fetched every message over IMAP, and a "Sign in with Microsoft" Outlook account only has access through Microsoft Graph, so each message failed. Archive now downloads Outlook messages through Graph, and a message you had already opened is replaced by its archived copy.

The fix is out in 2.19.1: https://github.com/GraphicMeat/mail-vault-app/releases/tag/v2.19.1. The app offers the update on its own, or you can download it from mailvaultapp.com.