diff --git a/Troubleshooting-Mail.md b/Troubleshooting-Mail.md
index 6e974e1..713b91e 100644
--- a/Troubleshooting-Mail.md
+++ b/Troubleshooting-Mail.md
@@ -7,6 +7,12 @@ In [Wekan v5.02](https://github.com/wekan/wekan/blob/master/CHANGELOG.md#v502-20
 - Email settings are made only with snap commands like `sudo snap set wekan mail-url....` or similar in Docker/Source etc `MAIL_URL=...`, more details below.
 - For any errors like SSLv3 and STARTTLS, check [newest AWS SES info](#example-aws-ses) and use similar settings, other SSLv3/STARTTLS info could be outdated.
 
+## ProtonMail Bridge
+
+```
+sudo snap set wekan mail-url='smtp://USER%40DOMAIN:PASSWORD@127.0.0.1:1025?ignoreTLS=true&tls={rejectUnauthorized:false}&secure=false'
+```
+
 ## Some more test code
 
 ```