# QQ email account encountered a crash

**URL:** <https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599>\
**Category:** User Testing\
**Tags:** android\
**Created:** [February 27, 2025, 3:14am UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599 "2025-02-27T03:14:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![imysl0](https://forum.delta.chat/user_avatar/forum.delta.chat/imysl0/32/2169_2.png) [@imysl0](https://forum.delta.chat/u/imysl0)\
**Post date:** [February 27, 2025, 3:14am UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599/1 "2025-02-27T03:14:25Z")

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Over the past two days, while using QQ Mail, I noticed that whenever I try to open my QQ Mail account with DeltaChat, it crashes immediately, making it impossible to use. On the DeltaChat mobile app, I don’t even have time to perform any operations. On ArcaneChat, there’s a quick toggle in the account list, as shown in the image below. So, after several attempts, I turned off the account’s message reception and managed to retrieve the log. Could this be a compatibility issue?

log：  
[deltachat-log-20250227-113155.txt](https://forum.delta.chat/uploads/short-url/lc5LEVsxFRNAroKkty7aQgsjkkO.txt) (113.4 KB)

ArcaneChat‘s quick switch：

 ![image](https://support.delta.chat/uploads/default/original/2X/c/c7e3a4c5ccb6c260101334fea4867c12d99b2534.jpeg)

After several attempts, I discovered that deleting certain emails allowed the application to function normally. Unfortunately, the emails have already been deleted, but it seems that the crashes were caused by specific emails.

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**Author:** ![link2xt](https://forum.delta.chat/user_avatar/forum.delta.chat/link2xt/32/1971_2.png) [@link2xt](https://forum.delta.chat/u/link2xt)\
**Post date:** [February 27, 2025, 5:09pm UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599/2 "2025-02-27T17:09:35Z")

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Thanks for the report, I filed an issue here:

> <https://github.com/deltachat/deltachat-core-rust/issues/6581>
>
> The error is \`Abort message: 'assertion failed: ix\_start \< line.len()'\` in the l…og https://support.delta.chat/t/qq-email-account-encountered-a-crash/3599/2
> 
> The crash is likely this line:
> https://github.com/staktrace/mailparse/blob/d6494b98a8d0baf14a4574c7a8f642a66d7674e6/src/lib.rs#L118
> 
> In the core itself we have eliminated most of the indexing/slicing and don't introduce more: https://github.com/deltachat/deltachat-core-rust/pull/6214
> 
> I file the issue here because we need to fix the bug in \`mailparse\`, update it an have a test in the core reproducing the crash.

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**Author:** ![link2xt](https://forum.delta.chat/user_avatar/forum.delta.chat/link2xt/32/1971_2.png) [@link2xt](https://forum.delta.chat/u/link2xt)\
**Post date:** [February 28, 2025, 2:53am UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599/3 "2025-02-28T02:53:46Z")

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This is fixed in core 1.156.1 which should be used in the next releases.

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**Author:** ![imysl0](https://forum.delta.chat/user_avatar/forum.delta.chat/imysl0/32/2169_2.png) [@imysl0](https://forum.delta.chat/u/imysl0)\
**Post date:** [February 28, 2025, 3:14am UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599/4 "2025-02-28T03:14:25Z")

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Great 👍👍👍

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**Author:** ![r10s](https://forum.delta.chat/user_avatar/forum.delta.chat/r10s/32/1513_2.png) [@r10s](https://forum.delta.chat/u/r10s)\
**Post date:** [October 6, 2026, 3:20pm UTC](https://forum.delta.chat/t/qq-email-account-encountered-a-crash/3599/5 "2026-10-06T15:20:09Z")

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