fix(email): retry transient send failures with per-provider error classification - #303

fix(email): retry transient send failures with per-provider error classification#303

clau1902 wants to merge 5 commits into

gotempsh:maingotempsh/temps:mainfrom

clau1902:fix/email-failover-and-retryclau1902/temps:fix/email-failover-and-retryCopy head branch name to clipboard