diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41e5fe4d7..433d47f64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,15 @@
 
 All changes that impact users of this module are documented in this file, in the [Common Changelog](https://common-changelog.org) format with some additional specifications defined in the CONTRIBUTING file. This codebase adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## Unreleased [minor]
+
+_Full changeset and discussions: [#1052](https://github.com/OpenTermsArchive/engine/pull/1052)._
+
+> Development of this release was supported by the [French Ministry for Foreign Affairs](https://www.diplomatie.gouv.fr/fr/politique-etrangere-de-la-france/diplomatie-numerique/) through its ministerial [State Startups incubator](https://beta.gouv.fr/startups/open-terms-archive.html) under the aegis of the Ambassador for Digital Affairs.
+
+### Changed
+
+- **Breaking:** Base the loading of the Notifier module on the presence of required configuration, not on the environment; only define the `SENDINBLUE_API_KEY` environment variable if you want the Notifier to be loaded, avoid relying on `NODE_ENV=production`
 
 ## 0.35.0 - 2024-02-14
 
diff --git a/src/index.js b/src/index.js
index 6c8873a71..dd31458c2 100644
--- a/src/index.js
+++ b/src/index.js
@@ -38,8 +38,10 @@ export default async function track({ services, types, extractOnly, schedule })
     return;
   }
 
-  if (process.env.NODE_ENV === 'production') {
+  if (process.env.SENDINBLUE_API_KEY) {
     archivist.attach(new Notifier(archivist.services));
+  } else {
+    logger.warn('Environment variable "SENDINBLUE_API_KEY" was not found; the Notifier module will be ignored');
   }
 
   if (process.env.GITHUB_TOKEN) {
@@ -49,8 +51,10 @@ export default async function track({ services, types, extractOnly, schedule })
       await reporter.initialize();
       archivist.attach(reporter);
     } else {
-      logger.warn('Configuration key "reporter.githubIssues.repositories.declarations" was not found; the Reporter module will be ignored\n');
+      logger.warn('Configuration key "reporter.githubIssues.repositories.declarations" was not found; the Reporter module will be ignored');
     }
+  } else {
+    logger.warn('Environment variable "GITHUB_TOKEN" was not found; the Notifier module will be ignored');
   }
 
   if (!schedule) {
diff --git a/src/logger/index.js b/src/logger/index.js
index e7ca02073..1cb73f7c0 100644
--- a/src/logger/index.js
+++ b/src/logger/index.js
@@ -34,7 +34,7 @@ const consoleTransport = new winston.transports.Console();
 
 const transports = [consoleTransport];
 
-if (config.get('logger.sendMailOnError')) {
+if (process.env.SMTP_PASSWORD && config.get('logger.sendMailOnError')) {
   const mailerOptions = {
     to: config.get('logger.sendMailOnError.to'),
     from: config.get('logger.sendMailOnError.from'),