Rated 5 out of 5 stars

This extension works a real treat especially in the new Thunderbird 115 version. I didn't think it would work based on the download information but it works perfectly. This is something which should be native to Thunderbird because it adds one additional step after you reply to an email to go and mark it as unread. I don't use the mark read on viewing because sometimes you will skim through some emails to work out which is the most important to answer the quickest. I have this feature turned off as standard but this mark read on reply does a great job. Well done developer ! 100 out of 100 !

Rated 5 out of 5 stars

This is a simple, but very useful addon, what is very very missing for me since then thunderbird also changed the addon subsystem, and the old addon what did this, did not worked anymore. Thank you for your work!