notify/email.go accumulated multi-recipient errors with multierror.Append(fmt.Errorf(...)) instead of multierror.Append(result, ...), so the accumulator was overwritten each iteration and only the last failing recipient's error survived; earlier failures were silently dropped. The telegram notifier did it correctly. Replace hashicorp/go-multierror with the stdlib errors.Join everywhere it was used (notify/email.go, notify/telegram.go, rest/api/rest_private.go, store/service/service.go, store/image/image.go and store/engine/bolt.go), which fixes the bug and drops the direct dependency. It stays indirect because go-pkgz/lcw/v2 still imports it. A regression test in email_test.go now sends two failing recipients and asserts both errors are reported.
sample store implementation
memory_store illustrates how to make a custom storage plugin for remark42.
In order to run remark42 with memory_store copy provided compose-dev-memstore.yml to the root directory and run:
docker compose -f compose-dev-memstore.yml builddocker compose -f compose-dev-memstore.yml up
As usual, demo site will run on http://127.0.0.1:8080/web/
note: in order to work with the latest (current) version of master go.mod uses replacement directive for the backend package. In real-life usage replace github.com/umputun/remark42/backend => ../../ should not be used.