diff --git a/app/DataMapper/CompanySettings.php b/app/DataMapper/CompanySettings.php
index 17249805bb5a..8ddd16ea362d 100644
--- a/app/DataMapper/CompanySettings.php
+++ b/app/DataMapper/CompanySettings.php
@@ -229,7 +229,7 @@ class CompanySettings extends BaseSettings
     public $require_quote_signature = false;  //@TODO ben to confirm
 
     //email settings
-    public $email_sending_method = 'default'; //enum 'default','gmail','office365' 'client_postmark', 'client_mailgun', 'mailgun' //@implemented
+    public $email_sending_method = 'default'; //enum 'default','gmail','office365' 'client_postmark', 'client_mailgun', 'mailgun', 'client_brevo' //@implemented
 
     public $gmail_sending_user_id = '0'; //@implemented
 
diff --git a/composer.lock b/composer.lock
index 94924c137001..f5797d572c29 100644
--- a/composer.lock
+++ b/composer.lock
@@ -5941,34 +5941,34 @@
         },
         {
             "name": "lcobucci/clock",
-            "version": "3.2.0",
+            "version": "3.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/lcobucci/clock.git",
-                "reference": "6f28b826ea01306b07980cb8320ab30b966cd715"
+                "reference": "039ef98c6b57b101d10bd11d8fdfda12cbd996dc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/lcobucci/clock/zipball/6f28b826ea01306b07980cb8320ab30b966cd715",
-                "reference": "6f28b826ea01306b07980cb8320ab30b966cd715",
+                "url": "https://api.github.com/repos/lcobucci/clock/zipball/039ef98c6b57b101d10bd11d8fdfda12cbd996dc",
+                "reference": "039ef98c6b57b101d10bd11d8fdfda12cbd996dc",
                 "shasum": ""
             },
             "require": {
-                "php": "~8.2.0 || ~8.3.0",
+                "php": "~8.1.0 || ~8.2.0",
                 "psr/clock": "^1.0"
             },
             "provide": {
                 "psr/clock-implementation": "1.0"
             },
             "require-dev": {
-                "infection/infection": "^0.27",
-                "lcobucci/coding-standard": "^11.0.0",
-                "phpstan/extension-installer": "^1.3.1",
-                "phpstan/phpstan": "^1.10.25",
-                "phpstan/phpstan-deprecation-rules": "^1.1.3",
-                "phpstan/phpstan-phpunit": "^1.3.13",
-                "phpstan/phpstan-strict-rules": "^1.5.1",
-                "phpunit/phpunit": "^10.2.3"
+                "infection/infection": "^0.26",
+                "lcobucci/coding-standard": "^9.0",
+                "phpstan/extension-installer": "^1.2",
+                "phpstan/phpstan": "^1.9.4",
+                "phpstan/phpstan-deprecation-rules": "^1.1.1",
+                "phpstan/phpstan-phpunit": "^1.3.2",
+                "phpstan/phpstan-strict-rules": "^1.4.4",
+                "phpunit/phpunit": "^9.5.27"
             },
             "type": "library",
             "autoload": {
@@ -5989,7 +5989,7 @@
             "description": "Yet another clock abstraction",
             "support": {
                 "issues": "https://github.com/lcobucci/clock/issues",
-                "source": "https://github.com/lcobucci/clock/tree/3.2.0"
+                "source": "https://github.com/lcobucci/clock/tree/3.0.0"
             },
             "funding": [
                 {
@@ -6001,7 +6001,7 @@
                     "type": "patreon"
                 }
             ],
-            "time": "2023-11-17T17:00:27+00:00"
+            "time": "2022-12-19T15:00:24+00:00"
         },
         {
             "name": "lcobucci/jwt",
@@ -12263,20 +12263,20 @@
         },
         {
             "name": "symfony/css-selector",
-            "version": "v7.0.3",
+            "version": "v6.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/css-selector.git",
-                "reference": "ec60a4edf94e63b0556b6a0888548bb400a3a3be"
+                "reference": "ee0f7ed5cf298cc019431bb3b3977ebc52b86229"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/css-selector/zipball/ec60a4edf94e63b0556b6a0888548bb400a3a3be",
-                "reference": "ec60a4edf94e63b0556b6a0888548bb400a3a3be",
+                "url": "https://api.github.com/repos/symfony/css-selector/zipball/ee0f7ed5cf298cc019431bb3b3977ebc52b86229",
+                "reference": "ee0f7ed5cf298cc019431bb3b3977ebc52b86229",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.2"
+                "php": ">=8.1"
             },
             "type": "library",
             "autoload": {
@@ -12308,7 +12308,7 @@
             "description": "Converts CSS selectors to XPath expressions",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/css-selector/tree/v7.0.3"
+                "source": "https://github.com/symfony/css-selector/tree/v6.4.3"
             },
             "funding": [
                 {
@@ -12324,7 +12324,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-01-23T15:02:46+00:00"
+            "time": "2024-01-23T14:51:35+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
@@ -12470,24 +12470,24 @@
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v7.0.3",
+            "version": "v6.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "834c28d533dd0636f910909d01b9ff45cc094b5e"
+                "reference": "ae9d3a6f3003a6caf56acd7466d8d52378d44fef"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/834c28d533dd0636f910909d01b9ff45cc094b5e",
-                "reference": "834c28d533dd0636f910909d01b9ff45cc094b5e",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/ae9d3a6f3003a6caf56acd7466d8d52378d44fef",
+                "reference": "ae9d3a6f3003a6caf56acd7466d8d52378d44fef",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.2",
+                "php": ">=8.1",
                 "symfony/event-dispatcher-contracts": "^2.5|^3"
             },
             "conflict": {
-                "symfony/dependency-injection": "<6.4",
+                "symfony/dependency-injection": "<5.4",
                 "symfony/service-contracts": "<2.5"
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@@ -12496,13 +12496,13 @@
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-                "symfony/config": "^6.4|^7.0",
-                "symfony/dependency-injection": "^6.4|^7.0",
-                "symfony/error-handler": "^6.4|^7.0",
-                "symfony/expression-language": "^6.4|^7.0",
-                "symfony/http-foundation": "^6.4|^7.0",
+                "symfony/config": "^5.4|^6.0|^7.0",
+                "symfony/dependency-injection": "^5.4|^6.0|^7.0",
+                "symfony/error-handler": "^5.4|^6.0|^7.0",
+                "symfony/expression-language": "^5.4|^6.0|^7.0",
+                "symfony/http-foundation": "^5.4|^6.0|^7.0",
                 "symfony/service-contracts": "^2.5|^3",
-                "symfony/stopwatch": "^6.4|^7.0"
+                "symfony/stopwatch": "^5.4|^6.0|^7.0"
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@@ -12530,7 +12530,7 @@
             "description": "Provides tools that allow your application components to communicate with each other by dispatching events and listening to them",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/event-dispatcher/tree/v7.0.3"
+                "source": "https://github.com/symfony/event-dispatcher/tree/v6.4.3"
             },
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@@ -12546,7 +12546,7 @@
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             ],
-            "time": "2024-01-23T15:02:46+00:00"
+            "time": "2024-01-23T14:51:35+00:00"
         },
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             "name": "symfony/event-dispatcher-contracts",
@@ -13114,25 +13114,25 @@
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         {
             "name": "symfony/intl",
-            "version": "v7.0.3",
+            "version": "v6.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/intl.git",
-                "reference": "295995df4acf6790a35b9ce6ec32b313efb11ff8"
+                "reference": "2628ded562ca132ed7cdea72f5ec6aaf65d94414"
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-                "url": "https://api.github.com/repos/symfony/intl/zipball/295995df4acf6790a35b9ce6ec32b313efb11ff8",
-                "reference": "295995df4acf6790a35b9ce6ec32b313efb11ff8",
+                "url": "https://api.github.com/repos/symfony/intl/zipball/2628ded562ca132ed7cdea72f5ec6aaf65d94414",
+                "reference": "2628ded562ca132ed7cdea72f5ec6aaf65d94414",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.2"
+                "php": ">=8.1"
             },
             "require-dev": {
-                "symfony/filesystem": "^6.4|^7.0",
-                "symfony/finder": "^6.4|^7.0",
-                "symfony/var-exporter": "^6.4|^7.0"
+                "symfony/filesystem": "^5.4|^6.0|^7.0",
+                "symfony/finder": "^5.4|^6.0|^7.0",
+                "symfony/var-exporter": "^5.4|^6.0|^7.0"
             },
             "type": "library",
             "autoload": {
@@ -13176,7 +13176,7 @@
                 "localization"
             ],
             "support": {
-                "source": "https://github.com/symfony/intl/tree/v7.0.3"
+                "source": "https://github.com/symfony/intl/tree/v6.4.3"
             },
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                 {
@@ -13192,7 +13192,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-01-23T15:02:46+00:00"
+            "time": "2024-01-23T14:51:35+00:00"
         },
         {
             "name": "symfony/mailer",
@@ -13429,20 +13429,20 @@
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v7.0.0",
+            "version": "v6.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "700ff4096e346f54cb628ea650767c8130f1001f"
+                "reference": "22301f0e7fdeaacc14318928612dee79be99860e"
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-                "reference": "700ff4096e346f54cb628ea650767c8130f1001f",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/22301f0e7fdeaacc14318928612dee79be99860e",
+                "reference": "22301f0e7fdeaacc14318928612dee79be99860e",
                 "shasum": ""
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             "require": {
-                "php": ">=8.2",
+                "php": ">=8.1",
                 "symfony/deprecation-contracts": "^2.5|^3"
             },
             "type": "library",
@@ -13476,7 +13476,7 @@
                 "options"
             ],
             "support": {
-                "source": "https://github.com/symfony/options-resolver/tree/v7.0.0"
+                "source": "https://github.com/symfony/options-resolver/tree/v6.4.0"
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@@ -13492,7 +13492,7 @@
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             ],
-            "time": "2023-08-08T10:20:21+00:00"
+            "time": "2023-08-08T10:16:24+00:00"
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             "name": "symfony/polyfill-ctype",
@@ -14676,20 +14676,20 @@
         },
         {
             "name": "symfony/string",
-            "version": "v7.0.4",
+            "version": "v6.4.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "f5832521b998b0bec40bee688ad5de98d4cf111b"
+                "reference": "4e465a95bdc32f49cf4c7f07f751b843bbd6dcd9"
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-                "reference": "f5832521b998b0bec40bee688ad5de98d4cf111b",
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             "require": {
-                "php": ">=8.2",
+                "php": ">=8.1",
                 "symfony/polyfill-ctype": "~1.8",
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                 "symfony/polyfill-intl-normalizer": "~1.0",
@@ -14699,11 +14699,11 @@
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-                "symfony/error-handler": "^6.4|^7.0",
-                "symfony/http-client": "^6.4|^7.0",
-                "symfony/intl": "^6.4|^7.0",
+                "symfony/error-handler": "^5.4|^6.0|^7.0",
+                "symfony/http-client": "^5.4|^6.0|^7.0",
+                "symfony/intl": "^6.2|^7.0",
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-                "symfony/var-exporter": "^6.4|^7.0"
+                "symfony/var-exporter": "^5.4|^6.0|^7.0"
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             "autoload": {
@@ -14742,7 +14742,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v7.0.4"
+                "source": "https://github.com/symfony/string/tree/v6.4.4"
             },
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@@ -14758,7 +14758,7 @@
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             ],
-            "time": "2024-02-01T13:17:36+00:00"
+            "time": "2024-02-01T13:16:41+00:00"
         },
         {
             "name": "symfony/translation",
@@ -16230,16 +16230,16 @@
         },
         {
             "name": "brianium/paratest",
-            "version": "v7.4.3",
+            "version": "v7.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paratestphp/paratest.git",
-                "reference": "64fcfd0e28a6b8078a19dbf9127be2ee645b92ec"
+                "reference": "551f46f52a93177d873f3be08a1649ae886b4a30"
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-                "reference": "64fcfd0e28a6b8078a19dbf9127be2ee645b92ec",
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+                "reference": "551f46f52a93177d873f3be08a1649ae886b4a30",
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@@ -16247,27 +16247,28 @@
                 "ext-pcre": "*",
                 "ext-reflection": "*",
                 "ext-simplexml": "*",
-                "fidry/cpu-core-counter": "^1.1.0",
+                "fidry/cpu-core-counter": "^0.5.1 || ^1.0.0",
                 "jean85/pretty-package-versions": "^2.0.5",
-                "php": "~8.2.0 || ~8.3.0",
-                "phpunit/php-code-coverage": "^10.1.11 || ^11.0.0",
-                "phpunit/php-file-iterator": "^4.1.0 || ^5.0.0",
-                "phpunit/php-timer": "^6.0.0 || ^7.0.0",
-                "phpunit/phpunit": "^10.5.9 || ^11.0.3",
-                "sebastian/environment": "^6.0.1 || ^7.0.0",
-                "symfony/console": "^6.4.3 || ^7.0.3",
-                "symfony/process": "^6.4.3 || ^7.0.3"
+                "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
+                "phpunit/php-code-coverage": "^10.1.7",
+                "phpunit/php-file-iterator": "^4.1.0",
+                "phpunit/php-timer": "^6.0",
+                "phpunit/phpunit": "^10.4.2",
+                "sebastian/environment": "^6.0.1",
+                "symfony/console": "^6.3.4 || ^7.0.0",
+                "symfony/process": "^6.3.4 || ^7.0.0"
             },
             "require-dev": {
                 "doctrine/coding-standard": "^12.0.0",
                 "ext-pcov": "*",
                 "ext-posix": "*",
-                "phpstan/phpstan": "^1.10.58",
+                "infection/infection": "^0.27.6",
+                "phpstan/phpstan": "^1.10.40",
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                 "phpstan/phpstan-phpunit": "^1.3.15",
                 "phpstan/phpstan-strict-rules": "^1.5.2",
-                "squizlabs/php_codesniffer": "^3.9.0",
-                "symfony/filesystem": "^6.4.3 || ^7.0.3"
+                "squizlabs/php_codesniffer": "^3.7.2",
+                "symfony/filesystem": "^6.3.1 || ^7.0.0"
             },
             "bin": [
                 "bin/paratest",
@@ -16308,7 +16309,7 @@
             ],
             "support": {
                 "issues": "https://github.com/paratestphp/paratest/issues",
-                "source": "https://github.com/paratestphp/paratest/tree/v7.4.3"
+                "source": "https://github.com/paratestphp/paratest/tree/v7.3.1"
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@@ -16320,7 +16321,7 @@
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-            "time": "2024-02-20T07:24:02+00:00"
+            "time": "2023-10-31T09:24:17+00:00"
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@@ -19405,20 +19406,20 @@
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-            "version": "v7.0.3",
+            "version": "v6.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/stopwatch.git",
-                "reference": "983900d6fddf2b0cbaacacbbad07610854bd8112"
+                "reference": "416596166641f1f728b0a64f5b9dd07cceb410c1"
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-                "reference": "983900d6fddf2b0cbaacacbbad07610854bd8112",
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+                "reference": "416596166641f1f728b0a64f5b9dd07cceb410c1",
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-                "php": ">=8.2",
+                "php": ">=8.1",
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@@ -19447,7 +19448,7 @@
             "description": "Provides a way to profile code",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/stopwatch/tree/v7.0.3"
+                "source": "https://github.com/symfony/stopwatch/tree/v6.4.3"
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@@ -19463,7 +19464,7 @@
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-            "time": "2024-01-23T15:02:46+00:00"
+            "time": "2024-01-23T14:35:58+00:00"
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@@ -19533,5 +19534,5 @@
     "platform-dev": {
         "php": "^8.1|^8.2"
     },
-    "plugin-api-version": "2.6.0"
+    "plugin-api-version": "2.3.0"
 }