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Thunderbird slow startup on MacOS

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  • Last reply by Mapenzi

LesJen
LesJen
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I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

I use Thunderbird on Windows and on Mac. I'm wondering why the startup time on Mac is significantly longer on MacOS. I'm currently on Tahoe 26.0.1 but Thunderbird has always been a slow starter. Can I change any setting to remedy this. At the moment I have two mail accounts configured both Gmail.

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Wayne Mery
Wayne Mery
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What versions of Thunderbird?

Define "slow" please in terms of numbers.

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LesJen
LesJen Question owner
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Version, see screen shot.

Startup time 12,96 seconds.

As comparison Mac mail starts in 3,26 seconds and MS Outlook starts in 5,05 seconds on the same Mac.

In a virtual win 11 machine on the same Mac I get a startup time of 4 seconds with the same version of Thunderbird.

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Mapenzi
Mapenzi
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Does the same happen when you start Thunderbird in "troubleshoot mode"? Hold down the Alt (Option) key and launch Thunderbird ...

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