# \#mail-app **URL:** https://help.nextcloud.com/tag/mail-app/232.md [Latest](https://help.nextcloud.com/latest.md) · [Categories](https://help.nextcloud.com/categories.md) · [Tags](https://help.nextcloud.com/tags.md) --- ## [Introducing Nextcloud Native for Android, Linux and Windows](https://help.nextcloud.com/t/introducing-nextcloud-native-for-android-linux-and-windows/248063)
**Author:** [@veryCrunchy](https://help.nextcloud.com/u/veryCrunchy)\ **Replies:** 9\ **Last updated:** [September 18, 2026, 6:24am UTC](https://help.nextcloud.com/t/introducing-nextcloud-native-for-android-linux-and-windows/248063 "2026-09-18T06:24:03Z")
Hi everyone! I would like to introduce Nextcloud Native, an independent open source Nextcloud client that I am building for Android, Linux and Windows. (Mac and IOS support planned) Nextcloud Native is intended to make… --- ## [E-mail Programm zeigt in der neuen Version keine PDFs mehr an](https://help.nextcloud.com/t/e-mail-programm-zeigt-in-der-neuen-version-keine-pdfs-mehr-an/248940)
**Author:** [@Starmanager](https://help.nextcloud.com/u/Starmanager)\ **Replies:** 5\ **Last updated:** [September 9, 2026, 9:16am UTC](https://help.nextcloud.com/t/e-mail-programm-zeigt-in-der-neuen-version-keine-pdfs-mehr-an/248940 "2026-09-09T09:16:31Z")
▶ Support intro Hat bisher funktioniert. Nun kommt nur noch diese nichtssagende Meldung. Passiert das auch bei den bezahlten Versionen? --- ## [Anhang per Drag&Drop in Nextcloud-Mail einfügen](https://help.nextcloud.com/t/anhang-per-drag-drop-in-nextcloud-mail-einfugen/246661)
**Author:** [@JoKo](https://help.nextcloud.com/u/JoKo)\ **Replies:** 1\ **Last updated:** [July 8, 2026, 11:48am UTC](https://help.nextcloud.com/t/anhang-per-drag-drop-in-nextcloud-mail-einfugen/246661 "2026-07-08T11:48:53Z")
Liebe Nextcloud-Gemeinde! Managed Nextcloud bei Hetzner (Storage Share) Nextcloud Hub 25 Autumn Version 32.0.9. Mail-App Version 5.10.5 Browser Firefox 140.12.0 ESR Ich möchte beim Erstellen einer Mail einen Anhang pe… --- ## [mail-app not showing some highlighted parts of messages](https://help.nextcloud.com/t/mail-app-not-showing-some-highlighted-parts-of-messages/246314)
**Author:** [@DinizBortolotto](https://help.nextcloud.com/u/DinizBortolotto)\ **Replies:** 0\ **Last updated:** [June 28, 2026, 5:27am UTC](https://help.nextcloud.com/t/mail-app-not-showing-some-highlighted-parts-of-messages/246314 "2026-06-28T05:27:11Z")
The Basics Nextcloud Server version (e.g., 29.x.x): 33.0.5 Operating system and version (e.g., Ubuntu 24.04): Slackware15.0 x86\_64 (post 15.0 -current) Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.) … --- ## [Mail App lässt sich nicht installieren](https://help.nextcloud.com/t/mail-app-lasst-sich-nicht-installieren/245807)
**Author:** [@nibuk05](https://help.nextcloud.com/u/nibuk05)\ **Replies:** 5\ **Last updated:** [June 14, 2026, 3:04pm UTC](https://help.nextcloud.com/t/mail-app-lasst-sich-nicht-installieren/245807 "2026-06-14T15:04:34Z")
Bei welchen Anbieter? selbstgehostet Synology Server Was für ein Server? Webstation mit Apache 2.4 Auf welcher Hardware? Synology DS 218+ Betriebssystem: DSM 7.3 sowie Version Apache 2.4, Webstation Nextcloud Version: N… --- ## [Unkai-Mail - A desktop mail client build for Nextcloud](https://help.nextcloud.com/t/unkai-mail-a-desktop-mail-client-build-for-nextcloud/245665)
**Author:** [@Videothek](https://help.nextcloud.com/u/Videothek)\ **Replies:** 0\ **Last updated:** [June 10, 2026, 3:09pm UTC](https://help.nextcloud.com/t/unkai-mail-a-desktop-mail-client-build-for-nextcloud/245665 "2026-06-10T15:09:09Z")
Hi everyone, I’m working on Unkai (雲海, Japanese for “sea of clouds”) – an open-source desktop mail client built from the ground up for people who want to keep control of their own data and have it play nicely with Nextc… --- ## [Unable to connect Microsoft email account to Mail](https://help.nextcloud.com/t/unable-to-connect-microsoft-email-account-to-mail/245632)
**Author:** [@bentpurist](https://help.nextcloud.com/u/bentpurist)\ **Replies:** 0\ **Last updated:** [June 9, 2026, 9:05pm UTC](https://help.nextcloud.com/t/unable-to-connect-microsoft-email-account-to-mail/245632 "2026-06-09T21:05:10Z")
The Basics Nextcloud Server version (e.g., 29.x.x): 33.0.5 Operating system and version (e.g., Ubuntu 24.04): Linux Web server and version (e.g, Apache 2.4.25): Apache 2.4.67 Reverse proxy and version \_(e.g. n… --- ## [Ordner konnte nicht geöffnet werden](https://help.nextcloud.com/t/ordner-konnte-nicht-geoffnet-werden/244177)
**Author:** [@DarkWixxard](https://help.nextcloud.com/u/DarkWixxard)\ **Replies:** 1\ **Last updated:** [May 20, 2026, 6:52am UTC](https://help.nextcloud.com/t/ordner-konnte-nicht-geoffnet-werden/244177 "2026-05-20T06:52:06Z")
Liebe Nutzer des deutschen Subforums. Es passiert leider häufig genug, dass ganz wesentliche Infos bei vielen Threads fehlen. Dabei weiß niemand außer Euch selbst, wie ihr eure Maschine(n) konfiguriert habt. Doch Inform… --- ## [Can not add Hotmail accounts](https://help.nextcloud.com/t/can-not-add-hotmail-accounts/243652)
**Author:** [@doctordre](https://help.nextcloud.com/u/doctordre)\ **Replies:** 10\ **Last updated:** [May 18, 2026, 6:02pm UTC](https://help.nextcloud.com/t/can-not-add-hotmail-accounts/243652 "2026-05-18T18:02:19Z")
Hello there, mail-app Xpertz! I’ m reaching out for your help, because I’m facing issues with integrating my two Hotmail accounts in nc mail-app. I’ve been following these instructions, registered for Azure, registered… --- ## [Itinerary Not Supported?](https://help.nextcloud.com/t/itinerary-not-supported/243866)
**Author:** [@Apesorg](https://help.nextcloud.com/u/Apesorg)\ **Replies:** 4\ **Last updated:** [May 1, 2026, 12:33pm UTC](https://help.nextcloud.com/t/itinerary-not-supported/243866 "2026-05-01T12:33:11Z")
Has anyone else got or seen this error? This is our server details. Our Mail app is on 5.1.12 --- ## [Cannot insert links in Mail composer (URL field stays empty)](https://help.nextcloud.com/t/cannot-insert-links-in-mail-composer-url-field-stays-empty/243686)
**Author:** [@marcobena](https://help.nextcloud.com/u/marcobena)\ **Replies:** 2\ **Last updated:** [April 24, 2026, 6:05pm UTC](https://help.nextcloud.com/t/cannot-insert-links-in-mail-composer-url-field-stays-empty/243686 "2026-04-24T18:05:51Z")
Title: Cannot insert links in Mail composer (URL field stays empty) Environment: Nextcloud Hub 26 Winter (33.0.2), update channel: Stable Mail app 5.7.12 (all apps up to date) Browser: Vivaldi, Opera, Firefox Steps … --- ## [Nextcloud Mail shows emails from 2026-04-17 and older without sender identification](https://help.nextcloud.com/t/nextcloud-mail-shows-emails-from-2026-04-17-and-older-without-sender-identification/243641)
**Author:** [@vawaver](https://help.nextcloud.com/u/vawaver)\ **Replies:** 2\ **Last updated:** [April 23, 2026, 8:50am UTC](https://help.nextcloud.com/t/nextcloud-mail-shows-emails-from-2026-04-17-and-older-without-sender-identification/243641 "2026-04-23T08:50:29Z")
Nextcloud Mail shows emails from 2026-04-17 and older without sender identification (?) across all connected accounts Environment Nextcloud AIO: 12.9.2 Nextcloud: 32.0.8 Nextcloud Mail: 5.7.12 Description I … --- ## [list all account IDs](https://help.nextcloud.com/t/list-all-account-ids/242214)
**Author:** [@piepre](https://help.nextcloud.com/u/piepre)\ **Replies:** 4\ **Last updated:** [March 23, 2026, 10:30am UTC](https://help.nextcloud.com/t/list-all-account-ids/242214 "2026-03-23T10:30:53Z")
hi, I’m writing some scripts to automate the mail-app configuration. I use mailcow with generic oidc auth. Nextcloud is the identity provider. I create the mailboxes and app\_passwords for imap/smtp access through the ma… --- ## [Mail Sync Broken for Mailbox (Argument exceeds maximum length of 4096 bytes.)](https://help.nextcloud.com/t/mail-sync-broken-for-mailbox-argument-exceeds-maximum-length-of-4096-bytes/240891)
**Author:** [@luke1](https://help.nextcloud.com/u/luke1)\ **Replies:** 8\ **Last updated:** [March 20, 2026, 12:49am UTC](https://help.nextcloud.com/t/mail-sync-broken-for-mailbox-argument-exceeds-maximum-length-of-4096-bytes/240891 "2026-03-20T00:49:22Z")
Hello All, I’m currently using the latest versions of Nextcloud Mail and Stalwart Mail Server. One of my users can no longer access their Inbox properly. When clicking on an email, the message body simply displays “Not … --- ## [Fehlende Indizes: "mail\_recip\_eml\_type\_mid\_idx" in Tabelle "mail\_recipients"](https://help.nextcloud.com/t/fehlende-indizes-mail-recip-eml-type-mid-idx-in-tabelle-mail-recipients/241394)
**Author:** [@alexhell](https://help.nextcloud.com/u/alexhell)\ **Replies:** 2\ **Last updated:** [March 7, 2026, 10:25am UTC](https://help.nextcloud.com/t/fehlende-indizes-mail-recip-eml-type-mid-idx-in-tabelle-mail-recipients/241394 "2026-03-07T10:25:28Z")
Liebe Community, seit meinem Upgrade auf NC 33 bekomme ich im Adminbereich folgende Fehlermeldung: Fehlende Indizes: “mail\_recip\_eml\_type\_mid\_idx” in Tabelle “mail\_recipients” Der Befehl \`occ db:add-missing-indices\` … --- ## [Hotmail and oauth?](https://help.nextcloud.com/t/hotmail-and-oauth/238510)
**Author:** [@catalyst1987](https://help.nextcloud.com/u/catalyst1987)\ **Replies:** 1\ **Last updated:** [February 25, 2026, 12:54pm UTC](https://help.nextcloud.com/t/hotmail-and-oauth/238510 "2026-02-25T12:54:19Z")
▶ Has anyone managed to connect their outlook/hotmail personal account in NextCloud mail using this method via entra? https://docs.nextcloud.com/server/latest/admin\_manual/groupware/mail.html#xoauth2-authentication-with-m… --- ## [Can 3rd party clients impact "important" training data?](https://help.nextcloud.com/t/can-3rd-party-clients-impact-important-training-data/236833)
**Author:** [@mez](https://help.nextcloud.com/u/mez)\ **Replies:** 4\ **Last updated:** [February 19, 2026, 9:53pm UTC](https://help.nextcloud.com/t/can-3rd-party-clients-impact-important-training-data/236833 "2026-02-19T21:53:18Z")
I have a general question about the Mail app’s machine learning to automatically apply the Important tag. In addition to using the web app, I also use Thunderbird as a client. Messages that NC has flagged as important, s… --- ## [How can I sync my calendar, contacts, and email from Microsoft Exchange SE with Nextcloud 32, since the CalDAV add-in in Outlook does not seem to sync properly?](https://help.nextcloud.com/t/how-can-i-sync-my-calendar-contacts-and-email-from-microsoft-exchange-se-with-nextcloud-32-since-the-caldav-add-in-in-outlook-does-not-seem-to-sync-properly/240405)
**Author:** [@Barrann](https://help.nextcloud.com/u/Barrann)\ **Replies:** 0\ **Last updated:** [February 15, 2026, 6:29pm UTC](https://help.nextcloud.com/t/how-can-i-sync-my-calendar-contacts-and-email-from-microsoft-exchange-se-with-nextcloud-32-since-the-caldav-add-in-in-outlook-does-not-seem-to-sync-properly/240405 "2026-02-15T18:29:30Z")
Dear friends, i am currently in need of help on how to sync my calendar, contacts, and email from Microsoft Exchange SE with Nextcloud 32. In Outlook, we use a CalDAV add-in, but despite this, when I create a profile fo… --- ## [Emails sent from nextcloud contain an empty Cc: field](https://help.nextcloud.com/t/emails-sent-from-nextcloud-contain-an-empty-cc-field/240195)
**Author:** [@ehrt74](https://help.nextcloud.com/u/ehrt74)\ **Replies:** 3\ **Last updated:** [February 13, 2026, 9:24pm UTC](https://help.nextcloud.com/t/emails-sent-from-nextcloud-contain-an-empty-cc-field/240195 "2026-02-13T21:24:25Z")
▶ Support intro Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. :heart: The Basics Nextcloud Server version (e.g., 29.x.x): hosted by… --- ## [E-mail inbox could not be opened / E-Mail-Postfach konnte nicht geöffnet werden](https://help.nextcloud.com/t/e-mail-inbox-could-not-be-opened-e-mail-postfach-konnte-nicht-geoffnet-werden/240174)
**Author:** [@PeterJu](https://help.nextcloud.com/u/PeterJu)\ **Replies:** 0\ **Last updated:** [February 11, 2026, 2:15pm UTC](https://help.nextcloud.com/t/e-mail-inbox-could-not-be-opened-e-mail-postfach-konnte-nicht-geoffnet-werden/240174 "2026-02-11T14:15:13Z")
▶ Support intro Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. :heart: The Basics Nextcloud Server version (e.g., 29.x.x): 32.0.3 O… --- ## [Add an exchange mailbox in Mail app](https://help.nextcloud.com/t/add-an-exchange-mailbox-in-mail-app/239719)
**Author:** [@ptidav](https://help.nextcloud.com/u/ptidav)\ **Replies:** 6\ **Last updated:** [February 8, 2026, 10:14am UTC](https://help.nextcloud.com/t/add-an-exchange-mailbox-in-mail-app/239719 "2026-02-08T10:14:38Z")
Hello everyone, I’m trying to add Exchange accounts to my Nextcloud. I followed the documentation guide to configure an Entra ID app. If I add an account that is a domain admin, the account is successfully created in Ma… --- ## [Mail Server Support?](https://help.nextcloud.com/t/mail-server-support/239787)
**Author:** [@morrowshore](https://help.nextcloud.com/u/morrowshore)\ **Replies:** 4\ **Last updated:** [February 5, 2026, 6:23am UTC](https://help.nextcloud.com/t/mail-server-support/239787 "2026-02-05T06:23:24Z")
Hello there! We’re a small company (https://morrowshore.com), and we’ve been trying to move away from Google and major platforms and becoming more self-reliant. We got all excited when we found that there was a mail ap… --- ## [Mail App / Inbox takes forever to load \[SOLVED\]](https://help.nextcloud.com/t/mail-app-inbox-takes-forever-to-load-solved/239236)
**Author:** [@yoda2025](https://help.nextcloud.com/u/yoda2025)\ **Replies:** 4\ **Last updated:** [January 30, 2026, 6:17pm UTC](https://help.nextcloud.com/t/mail-app-inbox-takes-forever-to-load-solved/239236 "2026-01-30T18:17:47Z")
I am using the last version of NextCloud AIO and Mail app When opening my inbox (using Stalwart), it is taking forever to display the inbox Sent Items is instantanous Any advice ? Nextcloud AIO v12.5.0 I know AIO i… --- ## [Mail app keeps throwing Horde\_Mime\_Exception after PHP & Mail limits adjusted (Nextcloud AIO)](https://help.nextcloud.com/t/mail-app-keeps-throwing-horde-mime-exception-after-php-mail-limits-adjusted-nextcloud-aio/239512)
**Author:** [@BSGSemesta](https://help.nextcloud.com/u/BSGSemesta)\ **Replies:** 2\ **Last updated:** [January 30, 2026, 3:52am UTC](https://help.nextcloud.com/t/mail-app-keeps-throwing-horde-mime-exception-after-php-mail-limits-adjusted-nextcloud-aio/239512 "2026-01-30T03:52:38Z")
Hi everyone, I’m running Nextcloud using Nextcloud All-in-One (AIO, Docker) and I’m facing a persistent issue with the Mail app. Problem: The Mail app keeps throwing the following error repeatedly in the logs: Horde\_… --- ## [Webmail client | Themes, look](https://help.nextcloud.com/t/webmail-client-themes-look/239067)
**Author:** [@Mge](https://help.nextcloud.com/u/Mge)\ **Replies:** 0\ **Last updated:** [January 21, 2026, 4:49pm UTC](https://help.nextcloud.com/t/webmail-client-themes-look/239067 "2026-01-21T16:49:06Z")
Hi, I’m using Nextcloud Mail (web interface) and I really struggle with the message list layout. Each email preview takes 4–5 lines, which makes the inbox very hard to scan. Before giving up or hacking things myself, … --- ## [Anbindung Nextcloud an MailCow](https://help.nextcloud.com/t/anbindung-nextcloud-an-mailcow/238120)
**Author:** [@Ronny1](https://help.nextcloud.com/u/Ronny1)\ **Replies:** 13\ **Last updated:** [January 8, 2026, 1:18pm UTC](https://help.nextcloud.com/t/anbindung-nextcloud-an-mailcow/238120 "2026-01-08T13:18:41Z")
▶ Ich hoffe Ihr hattet alle einen guten Jahresstart. Bitte habt Verständnis für meine laienhaften Fragestellungen…. Zur Situation betreff Mailzustellung/-Abholung: 1.) Nextcloud installiert und funktioniert (kann Mails… --- ## [Mail related error messages flooding the log every 75 minutes](https://help.nextcloud.com/t/mail-related-error-messages-flooding-the-log-every-75-minutes/238305)
**Author:** [@zonebattler](https://help.nextcloud.com/u/zonebattler)\ **Replies:** 0\ **Last updated:** [January 7, 2026, 8:23am UTC](https://help.nextcloud.com/t/mail-related-error-messages-flooding-the-log-every-75-minutes/238305 "2026-01-07T08:23:52Z")
▶ Support intro Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. :heart: The Basics Nextcloud Server version (e.g., 29.x.x): Nextcloud… --- ## [Mailvelope error](https://help.nextcloud.com/t/mailvelope-error/225197)
**Author:** [@gbpx](https://help.nextcloud.com/u/gbpx)\ **Replies:** 7\ **Last updated:** [December 31, 2025, 9:22am UTC](https://help.nextcloud.com/t/mailvelope-error/225197 "2025-12-31T09:22:04Z")
Mailvelope error: Error: Misformed armored text (see screenshot) I am using Nextcloud Hub 10 31.0.5 AIO I can send encrypted mails from my webmail accout (mxroute), but not from Nextcloud default mail app Mail Version … --- ## [Inquiry regarding Mail app resilience when one of multiple accounts is unreachable](https://help.nextcloud.com/t/inquiry-regarding-mail-app-resilience-when-one-of-multiple-accounts-is-unreachable/237832)
**Author:** [@vawaver](https://help.nextcloud.com/u/vawaver)\ **Replies:** 3\ **Last updated:** [December 29, 2025, 8:16am UTC](https://help.nextcloud.com/t/inquiry-regarding-mail-app-resilience-when-one-of-multiple-accounts-is-unreachable/237832 "2025-12-29T08:16:31Z")
Hello everyone, I have been using the Nextcloud Mail app with multiple accounts, and generally, it works very well. However, I recently encountered a specific scenario that I would like to understand better to see if I … --- ## [NC32 - Apps are temporarly not available](https://help.nextcloud.com/t/nc32-apps-are-temporarly-not-available/237103)
**Author:** [@blue1](https://help.nextcloud.com/u/blue1)\ **Replies:** 8\ **Last updated:** [December 12, 2025, 2:49pm UTC](https://help.nextcloud.com/t/nc32-apps-are-temporarly-not-available/237103 "2025-12-12T14:49:51Z")
Hi, seit dem Update auf NC32 habe ich häufiger das Problem, dass auch hier beschrieben wird: Mail - Seite nicht gefunden Apps wie Mail oder Deck werfen die Fehlermeldung, dass sie auf dem Server nicht verfügbar seien o… [Next page](https://help.nextcloud.com/tag/mail-app/232.md?match_all_tags=true&page=1&tags%5B%5D=mail-app)