I'm using protonmail and like to label my emails. In aerc these labels show up as folders named `Label/<label>`. "Adding" a label to an email can easily be done by copying the email to the correct folder. However, what I would really like is to be able to see the labels of an email in the index format. Is there some way to achieve this?

On Tuesday, February 23rd, 2021 at 12:00 PM, Axel Dahlberg <acksld@valleymnt.com> wrote:

> I'm using protonmail and like to label my emails. In aerc these
> labels show up as folders named `Label/<label>`. "Adding" a label to
> an email can easily be done by copying the email to the correct
> folder. However, what I would really like is to be able to see the
> labels of an email in the index format. Is there some way to achieve
> this?

IMAP has a native concept of permanent user-defined flags [1]. I don't
think the official ProtonMail bridge sets those, unfortunately. There
are also character restrictions on flag names:

    flag-keyword    = atom
    atom            = 1*ATOM-CHAR
    ATOM-CHAR       = <any CHAR except atom-specials>
    atom-specials   = "(" / ")" / "{" / SP / CTL / list-wildcards /
                      quoted-specials / resp-specials

[1]: https://tools.ietf.org/html/rfc3501#section-2.3.2