Tried to set it to various bad values, got reasonable error messages. Read documentation.
Mostly minor nitpicks, but the last one is a real bug.
Should we also add a note about needing to toggle that "actually send emails as expected" option?
It's not totally obvious that numerically higher priorities are preferred. Maybe explicitly add priority: 200 for the above example?
"invalid specification" (or "invalid mailer specification").
- Fix typos/wordsmithing.
- Make it more clear that priorities go from high to low, not "1st priority, 2nd priority".