I’m sure that there are no email account or repository access rights issues. This email notification configuration has been in use since November 2018 (in some of my other projects) and will be available until January this year.
A few minutes ago, I tried to add a new qq.com notification email address for the test project. The new address received a ‘build failed’ notification normally, but gmail.com mailbox still did not respond.
notifications:
email:
recipients:
- primary@gmail.com # the repository owener's email address, get no notification when build fails.
- newlyadded@qq.com # newly added, the other GitHub acount's email, get notification normally !
on_success: never
My gmail.com email address does not have any email blocking rules for Travis. Can you check the system log to see if there are any new clues?