diff --git a/config_panel.toml b/config_panel.toml
new file mode 100644
index 0000000..78d3022
--- /dev/null
+++ b/config_panel.toml
@@ -0,0 +1,25 @@
+version = "1.0"
+
+[main]
+name = "Snappymail configuration"
+
+    [main.php_fpm_config]
+    name = "PHP-FPM configuration"
+
+        [main.php_fpm_config.fpm_footprint]
+        ask = "Memory footprint of the service?"
+        choices = ["low", "medium", "high", "specific"]
+        default = "low"
+        help = "low <= 20Mb per pool. medium between 20Mb and 40Mb per pool. high > 40Mb per pool.<br>Use specific to set a value with the following option."
+
+        [main.php_fpm_config.free_footprint]
+        ask = "Memory footprint of the service?"
+        type = "number"
+        default = "0"
+        help = "Free field to specify exactly the footprint in Mb if you don't want to use one of the three previous values."
+
+        [main.php_fpm_config.fpm_usage]
+        ask = "Expected usage of the service?"
+        choices = ["low", "medium", "high"]
+        default = "low"
+        help = "low: Personal usage, behind the SSO. No RAM footprint when not used, but the impact on the processor can be high if many users are using the service.<br>medium: Low usage, few people or/and publicly accessible. Low RAM footprint, medium processor footprint when used.<br>high: High usage, frequently visited website. High RAM footprint, but lower on processor usage and quickly responding."
diff --git a/config_panel.toml.example b/config_panel.toml.example
deleted file mode 100644
index c6bccd8..0000000
--- a/config_panel.toml.example
+++ /dev/null
@@ -1,295 +0,0 @@
-
-## Config panel are available from webadmin > Apps > YOUR_APP > Config Panel Button
-## Those panels let user configure some params on their apps using a friendly interface,
-## and remove the need to manually edit files from the command line.
- 
-## From a packager perspective, this .toml is coupled to the scripts/config script,
-## which may be used to define custom getters/setters. However, most use cases
-## should be covered automagically by the core, thus it may not be necessary
-## to define a scripts/config at all!
- 
-## -----------------------------------------------------------------------------
-## IMPORTANT: In accordance with YunoHost's spirit, please keep things simple and 
-## do not overwhelm the admin with tons of misunderstandable or advanced settings.
-## -----------------------------------------------------------------------------
-
-## The top level describe the entire config panels screen.
-
-## The version is a required property. 
-## Here a small reminder to associate config panel version with YunoHost version
-## | Config | YNH    | Config panel small change log                           |
-## | ------ | ---    | ------------------------------------------------------- |
-## | 0.1    | 3.x    | 0.1 config script not compatible with YNH >= 4.3        |
-## | 1.0    | 4.3.x  | The new config panel system with 'bind' property        |
-version = "1.0"
-
-## (optional) i18n property let you internationalize questions, however this feature 
-## is only available in core configuration panel (like yunohost domain config).
-## So in app config panel this key is ignored for now, but you can internationalize
-## by using a lang dictionary (see property name bellow)
-# i18n = "prefix_translation_key"
-
-################################################################################
-#### ABOUT PANELS
-################################################################################
-
-## The next level describes web admin panels
-## You have to choose an ID for each panel, in this example the ID is "main"
-## Keep in mind this ID will be used in CLI to refer to your question, so choose
-## something short and meaningfull.
-## In the webadmin, each panel corresponds to a distinct tab / form
-[main]
-
-## Define the label for your panel
-## Internationalization works similarly to the 'description' and 'ask' questions in the manifest
-# name.en = "Main configuration"
-# name.fr = "Configuration principale"
-
-## (optional) If you need to trigger a service reload-or-restart after the user
-## change a question in this panel, you can add your service in the list.
-services = ["__APP__"]
-# or services = ["nginx", "__APP__"] to also reload-or-restart nginx
-
-## (optional) This help properties is a short help displayed on the same line
-## than the panel title but not displayed in the tab.
-# help = ""
-    
-    ############################################################################
-    #### ABOUT SECTIONS
-    ############################################################################
-
-    ## A panel is composed of one or several sections.
-    ##
-    ## Sections are meant to group questions together when they correspond to
-    ## a same subtopic. This impacts the rendering in terms of CLI prompts
-    ## and HTML forms
-    ##
-    ## You should choose an ID for your section, and prefix it with the panel ID
-    ## (Be sure to not make a typo in the panel ID, which would implicitly create
-    ## an other entire panel)
-    ##
-    ## We use the context of pepettes_ynh as an example,
-    ## which is a simple donation form app written in python,
-    ## and for which the admin will want to edit the configuration
-    [main.customization]
-
-    ## (optional) Defining a proper title for sections is not mandatory
-    ## and depends on the exact rendering you're aiming for the CLI / webadmin
-    name = ""
-
-    ## (optional) This help properties is a short help displayed on the same line
-    ## than the section title, meant to provide additional details
-    # help = ""
-    
-    ## (optional) As for panel, you can specify to trigger a service 
-    ## reload-or-restart after the user change a question in this section.
-    ## This property is added to the panel property, it doesn't deactivate it.
-    ## So no need to replicate, the service list from panel services property.
-    # services = []
-    
-    ## (optional) By default all questions are optionals, but you can specify a
-    ## default behaviour for question in the section
-    optional = false
-        
-    ## (optional) It's also possible with the 'visible' property to only
-    ## display the section depending on the user's answers to previous questions.
-    ##
-    ## Be careful that the 'visible' property should only refer to **previous** questions
-    ## Hence, it should not make sense to have a "visible" property on the very first section.
-    ##
-    ## Also, keep in mind that this feature only works in the webadmin and not in CLI
-    ## (therefore a user could be prompted in CLI for a question that may not be relevant)
-    # visible = true
-
-        ########################################################################
-        #### ABOUT QUESTIONS
-        ########################################################################
-
-        ## A section is compound of one or several questions.
-
-        ## ---------------------------------------------------------------------
-        ## IMPORTANT: as for panel and section you have to choose an ID, but this
-        ## one should be unique in all this document, even if the question is in
-        ## an other panel.
-        ## ---------------------------------------------------------------------
-        
-        ## You can use same questions types and properties than in manifest.yml 
-        ## install part. However, in YNH 4.3, a lot of change has been made to
-        ## extend availables questions types list.
-        ## See: TODO DOC LINK
-        
-        [main.customization.project_name]
-        
-        ## (required) The ask property is equivalent to the ask property in 
-        ## the manifest. However, in config panels, questions are displayed on the
-        ## left side and therefore have less space to be rendered. Therefore, 
-        ## it is better to use a short question, and use the "help" property to
-        ## provide additional details if necessary.
-        ask.en = "Name of the project"
-
-        ## (required) The type property indicates how the question should be 
-        ## displayed, validated and managed. Some types have specific properties.
-        ## 
-        ## Types available: string, boolean, number, range, text, password, path
-        ## email, url, date, time, color, select, domain, user, tags, file.
-        ##
-        ## For a complete list with specific properties, see: TODO DOC LINK
-        type = "string"
-        
-        ########################################################################
-        #### ABOUT THE BIND PROPERTY
-        ########################################################################
-
-        ## (recommended) 'bind' property is a powerful feature that let you 
-        ## configure how and where the data will be read, validated and written. 
-
-        ## By default, 'bind property is in "settings" mode, it means it will 
-        ## **only** read and write the value in application settings file.
-        ## bind = "settings"
-
-        ## However, settings usually correspond to key/values in actual app configurations
-        ## Hence, a more useful mode is to have bind = ":FILENAME". In that case, YunoHost
-        ## will automagically find a line with "KEY=VALUE" in FILENAME
-        ## (with the adequate separator between KEY and VALUE)
-        ##
-        ## YunoHost will then use this value for the read/get operation.
-        ## During write/set operations, YunoHost will overwrite the value
-        ## in **both** FILENAME and in the app's settings.yml
-
-        ## Configuration file format supported: yaml, toml, json, ini, env, php,
-        ## python. The feature probably works with others formats, but should be tested carefully.
-
-        ## Note that this feature only works with relatively simple cases
-        ## such as `KEY: VALUE`, but won't properly work with
-        ## complex data structures like multilin array/lists or dictionnaries.
-        ## It also doesn't work with XML format, custom config function call, php define(), ...
-
-        ## More info on TODO
-        # bind = ":/var/www/__APP__/settings.py"
-
-
-        ## By default, bind = ":FILENAME" will use the question ID as KEY
-        ## ... but the question ID may sometime not be the exact KEY name in the configuration file.
-        ## 
-        ## In particular, in pepettes, the python variable is 'name' and not 'project_name'
-        ## (c.f. https://github.com/YunoHost-Apps/pepettes_ynh/blob/5cc2d3ffd6529cc7356ff93af92dbb6785c3ab9a/conf/settings.py##L11 )
-        ##
-        ## In that case, the key name can be specified before the column ':'
-        
-        bind = "name:/var/www/__APP__/settings.py"
-
-        ## ---------------------------------------------------------------------
-        ## IMPORTANT: other 'bind' mode exists:
-        ## 
-        ## bind = "FILENAME" (with no column character before FILENAME)
-        ## may be used to bind to the **entire file content** (instead of a single KEY/VALUE)
-        ## This could be used to expose an entire configuration file, or binary files such as images
-        ## For example:
-        ## bind = "/var/www/__APP__/img/logo.png"
-        ##
-        ## bind = "null" can be used to disable reading / writing in settings.
-        ## This creates sort of a "virtual" or "ephemeral" question which is not related to any actual setting
-        ## In this mode, you are expected to define custom getter/setters/validators in scripts/config:
-        ##
-        ## getter: get__QUESTIONID()
-        ## setter: set__QUESTIONID()
-        ## validator: validate__QUESTIONID()
-        ##
-        ## You can also specify a common getter / setter / validator, with the 
-        ## function 'bind' mode, for example here it will try to run 
-        ## get__array_settings() first.
-        #  bind = "array_settings()"
-        ## ---------------------------------------------------------------------
-        
-        ## ---------------------------------------------------------------------
-        ## IMPORTANT: with the exception of bind=null questions,
-        ## question IDs should almost **always** correspond to an app setting
-        ## initialized / reused during install/upgrade.
-        ## Not doing so may result in inconsistencies between the config panel mechanism
-        ## and the use of ynh_add_config
-        ## ---------------------------------------------------------------------
-
-        ########################################################################
-        #### OTHER GENERIC PROPERTY FOR QUESTIONS
-        ########################################################################
-        
-        ## (optional) An help text for the question
-        help = "Fill the name of the project which will received donation"
-
-        ## (optional) An example display as placeholder in web form
-        # example = "YunoHost"
-
-        ## (optional) set to true in order to redact the value in operation logs
-        # redact = false
-
-        ## (optional) A validation pattern
-        ## ---------------------------------------------------------------------
-        ## IMPORTANT: your pattern should be between simple quote, not double.
-        ## ---------------------------------------------------------------------
-        pattern.regexp = '^\w{3,30}$'
-        pattern.error = "The name should be at least 3 chars and less than 30 chars. Alphanumeric chars are accepted"
-
-        ## Note: visible and optional properties are also available for questions
-
-
-        [main.customization.contact_url]
-        ask = "Contact url"
-        type = "url"
-        example = "mailto: contact@example.org"
-        help = "mailto: accepted"
-        pattern.regexp = '^mailto:[^@]+@[^@]+|https://$'
-        pattern.error = "Should be https or mailto:"
-        bind = ":/var/www/__APP__/settings.py"
-
-        [main.customization.logo]
-        ask = "Logo"
-        type = "file"
-        accept = ".png"
-        help = "Fill with an already resized logo"
-        bind = "__FINALPATH__/img/logo.png"
-        
-        [main.customization.favicon]
-        ask = "Favicon"
-        type = "file"
-        accept = ".png"
-        help = "Fill with an already sized favicon"
-        bind = "__FINALPATH__/img/favicon.png"
-
-        
-    [main.stripe]
-    name = "Stripe general info"
-    optional = false
-
-        # The next alert is overwrited with a getter from the config script
-        [main.stripe.amount]
-        ask = "Donation in the month : XX €
-        type = "alert"
-        style = "success"
-
-        [main.stripe.publishable_key]
-        ask = "Publishable key"
-        type = "string"
-        redact = true
-        help = "Indicate here the stripe publishable key"
-        bind = ":/var/www/__APP__/settings.py"
-
-        [main.stripe.secret_key]
-        ask = "Secret key"
-        type = "string"
-        redact = true
-        help = "Indicate here the stripe secret key"
-        bind = ":/var/www/__APP__/settings.py"
-        
-        [main.stripe.prices]
-        ask = "Prices ID"
-        type = "tags"
-        help = """\
-        Indicates here the prices ID of donation products you created in stripe interfaces. \
-        Go on [Stripe products](https://dashboard.stripe.com/products) to create those donation products. \
-        Fill it tag with 'FREQUENCY/CURRENCY/PRICE_ID' \
-        FREQUENCY: 'one_time' or 'recuring' \
-        CURRENCY: 'EUR' or 'USD' \
-        PRICE_ID: ID from stripe interfaces starting with 'price_' \
-        """
-        pattern.regexp = '^(one_time|recuring)/(EUR|USD)/price_.*$'
-        pattern.error = "Please respect the format describe in help text for each price ID"