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Browser extension makes Startmail unusable (slows down e-mail writing massively)

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Hi there,

for a few months now, I am unable to use Startmail's web mailer. When trying to write an e-mail, text input lags by up to 20s (!), meaning I type a character or word and they would only appear 15-20 seconds later.

When looking at the DevTools, it's clearly visible Enpass is the cause. I don't have the problem on any other website. Disabling the extension immediately fixes the problem.

I'm running:
Brave 1.80.124 (Official Build) (64-bit)
Chromium: 138.0.7204.168
Enpass extension 6.11.5
Enpass 6.11.12 (1994)

The problem first started a couple of months ago - I initially thought Startmail (startmail.com) was the problem, but now realized this is due to Enpass.
Any help would be greatly appreciated.

Screenshot 2025-07-29 102017.png

I've shared the details with our Technical Team to investigate the performance issue caused by the Enpass browser extension on Startmail’s web mailer. We’ll look into this further and share any findings here.

If any additional information is required during the investigation, we’ll reach out to you via this thread.
#SI-4444

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