[neomutt-devel] NeoMutt 2026-04-06

[Richard Russon]

## Notes

This release focuses on IMAP reliability, with connection monitoring, timeouts,
and reconnection backoff. It also includes many bug fixes across IMAP, threading,
and the index.

## Sponsors

- Jakub Jindra (@jindraj)
- Scott Kostyshak (@scottkosty)
- Igor Serebryany (@igor47)
- Mark Korondi (@kmARC)
- Bastian Bittorf (@bittorf)
- Nicolas Évrard (@nicoe)
- Farzad Sadeghi (@terminaldweller)
- Robert Ricci (@ricci)
- Robert Labudda
- Morgan Kelly
- Nick Price (@DominoTree)
- Sebastian Stark (@sstark)
- 罗昭铭
- Aboudoulaye Yatera
- Marton Balazs	(@martonbalazs)
- Kirill Rekhov	(@krekhovx)
- Joonas Laine
- Anonymous (Liberapay)

Become a sponsor of NeoMutt - https://neomutt.org/sponsor

## Thanks

Many thanks to our *new contributor*:

- Vladimír Marek (@vlmarek)

and our *regular contributors*:

- Pietro Cerutti (@gahr)
- Alejandro Colomar (@alejandro-colomar)

- First Last (@nick)

## Features

- #4799 Add IMAP connection monitoring, timeouts, and reconnection backoff

## Bug Fixes

- #4755 Fix off-by-one in ARRAY_RESERVE()
- #4819 Fix IMAP crash when changing folders
- Fix freeze in IMAP with OpenSSL
- Fix blocking IMAP pipeline drain with many mailboxes
- Fix crash on threaded index update
- Fix crash on NULL thread in display subject
- Fix menu half-down when data fits in one page
- Fix alias search prompt
- Fix index tag colours
- Protect hooks against unhook during execution
- Fix leak in pattern alias search
- Consistently convert headers to LF EOL convention

## Changed Config

- Changed: `compose_show_preview = yes`
  Display a preview of the message body in the Compose window

## Docs

- `$message_id_format`: mention Base64Url encoding
- Fix descriptions of deprecated config options

## Build

- #4826 Use optreset on Solaris too
- #4827 Avoid function name clash on Solaris
- #4828 Allow Solaris to use qsort_s
- Check docs requirements in configure

## Code

- Fix graphviz debug output

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