Mail checking a bit slow

[David Woodfall]

On (20/03/18 10:22), Jens John <lists at 2ion.de> put forth the proposition:
>On Tue, 20 Mar 2018, at 05:17, David Woodfall wrote:
>> Is there a way of speeding this up? I'm not using IMAP or anything,
>> just plain maildir.
>
>You should try `header_cache`. It worked wonders when I was still using a HDD and Maildir, reducing mailbox load times from ~4s to .5s for large maildirs. Not sure how much of a difference this would make on a system that already has SSD, but even then it's worth a try.
>
>header_cache
>              Type: path
>              Default: “”
>
>              This  variable  points  to the header cache database.  If pointing to a directory Mutt will contain a header cache database file per folder, if pointing to a file that file
>              will be a single global header cache. By default it is unset so no header caching will be used.
>
>              Header caching can greatly improve speed when opening POP, IMAP MH or Maildir folders, see “caching” for details.
>

I used to use cache when I used IMAP. I turned it off when I started
using local mailboxes. I'll turn it on again and see.