Simple, single.phar SendGrid cli.
You have to create ~/.sendgrid/config.ini
with your SendGrid username and password.
username = my_username
password = my_password
./sendgrid.phar send \
--to developers@test.com \
--body @/path/to/emailBody \
--subject "test email"
Combined with some git magic
# Generate list of committers
git log origin/master..origin/my-branch \
--format=%ae \
| sort | uniq > committers-emails
# Generate simple change log
echo "Changes: \
" `git log --no-merges origin/master..origin/my-branch --format=" o %s (%an)"` > changes
./sendgrid.phar send --to '@committers-emails' --body '@changes --subject "Release Notes"'