Previously, when updating and resending a snailmail through the chatter, it would re-send every snailmail letters in the DB with an error. This behaviour lead to users mistakenly sending dozens of unwanted snailmails, expecting to re-send the one they were currently on. This commit changes that by only sending the relevant letter(s). closes odoo/odoo#146078 X-original-commit: 43a56e84919604608d12bf3d8528339733fc79d8 Signed-off-by: Louis Baudoux (lba) <lba@odoo.com> Signed-off-by: Solan Delvenne (sode) <sode@odoo.com>