diff --git a/lib/models/fields.js b/lib/models/fields.js
index 52b40310..ef86f342 100644
--- a/lib/models/fields.js
+++ b/lib/models/fields.js
@@ -24,6 +24,7 @@ module.exports.types = {
     'date-eur': 'Date (DD/MM/YYYY)',
     'birthday-us': 'Birthday (MM/DD)',
     'birthday-eur': 'Birthday (DD/MM)',
+    json: 'JSON value for custom rendering',
     option: 'Option'
 };
 
@@ -34,6 +35,7 @@ module.exports.genericTypes = {
     website: 'string',
     longtext: 'textarea',
     gpg: 'textarea',
+    json: 'textarea',
     number: 'number',
     'date-us': 'date',
     'date-eur': 'date',
@@ -106,7 +108,7 @@ module.exports.get = (id, callback) => {
                 return callback(err);
             }
             let field = rows && rows[0] && tools.convertKeys(rows[0]) || false;
-            field.isGroup = module.exports.grouped.includes(field.type);
+            field.isGroup = module.exports.grouped.includes(field.type) || field.type === 'json';
             return callback(null, field);
         });
     });
@@ -329,6 +331,7 @@ function addCustomField(listId, name, defaultValue, type, group, groupTemplate,
                         break;
                     case 'gpg':
                     case 'longtext':
+                    case 'json':
                         query = 'ALTER TABLE `subscription__' + listId + '` ADD COLUMN `' + column + '` TEXT DEFAULT NULL';
                         break;
                     case 'number':
@@ -412,6 +415,35 @@ module.exports.getRow = (fieldList, values, useDate, showAll, onlyExisting) => {
                     row.push(item);
                     break;
                 }
+            case 'json':
+                {
+                    let value;
+                    let json = (valueList[field.column] || '').toString().trim();
+                    try {
+                        let parsed = JSON.parse(json);
+                        if (Array.isArray(parsed)) {
+                            parsed = {
+                                values: parsed
+                            };
+                        }
+                        value = json ? render(field.groupTemplate, parsed) : '';
+                    } catch (E) {
+                        value = E.message;
+                    }
+
+                    let item = {
+                        type: field.type,
+                        name: field.name,
+                        column: field.column,
+                        value: (valueList[field.column] || '').toString().trim(),
+                        visible: !!field.visible,
+                        mergeTag: field.key,
+                        mergeValue: value || field.defaultValue,
+                        ['type' + (field.type || '').toString().trim().replace(/(?:^|\-)([a-z])/g, (m, c) => c.toUpperCase())]: true
+                    };
+                    row.push(item);
+                    break;
+                }
             case 'number':
                 {
                     let item = {
diff --git a/views/lists/fields/create.hbs b/views/lists/fields/create.hbs
index 04852fff..04e58aa6 100644
--- a/views/lists/fields/create.hbs
+++ b/views/lists/fields/create.hbs
@@ -28,6 +28,7 @@
                 <option value="website" {{#if selectedWebsite}} selected {{/if}}>Website</option>
                 <option value="gpg" {{#if selectedGpg}} selected {{/if}}>GPG Public Key</option>
                 <option value="longtext" {{#if selectedLongtext}} selected {{/if}}>Multi-line text</option>
+                <option value="json" {{#if selectedJson}} selected {{/if}}>JSON</option>
                 <optgroup label="Date">
                     <option value="date-us" {{#if selectedDateUs}} selected {{/if}}>Date (MM/DD/YYYY)</option>
                     <option value="date-eur" {{#if selectedDateEur}} selected {{/if}}>Date (DD/MM/YYYY)</option>
@@ -67,10 +68,10 @@
     </div>
 
     <div class="form-group">
-        <label for="group-template" class="col-sm-2 control-label">Group template</label>
+        <label for="group-template" class="col-sm-2 control-label">Template</label>
         <div class="col-sm-10">
             <textarea class="form-control gpg-text" rows="3" name="group-template" id="group-template">{{field.groupTemplate}}</textarea>
-            <span class="help-block">For group elements like checkboxes you can control the appearance of the merge tag with an optional template. The template uses handlebars syntax and you can find all values from <code>\{{values}}</code> array, for example <code>\{{#each values}} \{{this}} \{{/each}}</code>. If template is not defined then multiple values are joined with commas.</span>
+            <span class="help-block">For group elements like checkboxes you can control the appearance of the merge tag with an optional template. The template uses handlebars syntax and you can find all values from <code>\{{values}}</code> array, for example <code>\{{#each values}} \{{this}} \{{/each}}</code>. If template is not defined then multiple values are joined with commas. You can also use this template to render JSON values (if the JSON is an array then the array is exposed as <code>values</code>, otherwise you can access the JSON keys directly).</span>
         </div>
     </div>
 
diff --git a/views/lists/fields/edit.hbs b/views/lists/fields/edit.hbs
index da99e051..33509a99 100644
--- a/views/lists/fields/edit.hbs
+++ b/views/lists/fields/edit.hbs
@@ -35,6 +35,7 @@
                 <option value="website" {{#if selectedWebsite}} selected {{/if}}>Website</option>
                 <option value="gpg" {{#if selectedGpg}} selected {{/if}}>GPG Public Key</option>
                 <option value="longtext" {{#if selectedLongtext}} selected {{/if}}>Multi-line text</option>
+                <option value="json" {{#if selectedJson}} selected {{/if}}>JSON</option>
                 <optgroup label="Date">
                     <option value="date-us" {{#if selectedDateUs}} selected {{/if}}>Date (MM/DD/YYYY)</option>
                     <option value="date-eur" {{#if selectedDateEur}} selected {{/if}}>Date (DD/MM/YYYY)</option>
@@ -81,10 +82,10 @@
     {{#if field.isGroup}}
 
         <div class="form-group">
-            <label for="group-template" class="col-sm-2 control-label">Group template</label>
+            <label for="group-template" class="col-sm-2 control-label">Template</label>
             <div class="col-sm-10">
                 <textarea class="form-control gpg-text" rows="3" name="group-template" id="description">{{field.groupTemplate}}</textarea>
-                <span class="help-block">For group elements like checkboxes you can control the appearance of the merge tag with an optional template. The template uses handlebars syntax and you can find all values from <code>\{{values}}</code> array, for example <code>\{{#each values}} \{{this}} \{{/each}}</code>. If template is not defined then multiple values are joined with commas.</span>
+                <span class="help-block">For group elements like checkboxes you can control the appearance of the merge tag with an optional template. The template uses handlebars syntax and you can find all values from <code>\{{values}}</code> array, for example <code>\{{#each values}} \{{this}} \{{/each}}</code>. If template is not defined then multiple values are joined with commas. You can also use this template to render JSON values (if the JSON is an array then the array is exposed as <code>values</code>, otherwise you can access the JSON keys directly).</span>
             </div>
         </div>
 
diff --git a/views/lists/subscription/add.hbs b/views/lists/subscription/add.hbs
index 9d58af1a..59acd202 100644
--- a/views/lists/subscription/add.hbs
+++ b/views/lists/subscription/add.hbs
@@ -54,6 +54,10 @@
                     <textarea class="form-control" rows="3" name="{{column}}">{{value}}</textarea>
                 {{/if}}
 
+                {{#if typeJson}}
+                    <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="{&quot;data&quot;:&quot;value&quot;}">{{value}}</textarea>
+                {{/if}}
+
                 {{#if typeGpg}}
                     <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="Begins with &#39;-----BEGIN PGP PUBLIC KEY BLOCK-----&#39;">{{value}}</textarea>
                     <span class="help-block">Insert a GPG public key that will be used to encrypt messages sent this subscriber</span>
diff --git a/views/lists/subscription/edit.hbs b/views/lists/subscription/edit.hbs
index e45ef648..9821089e 100644
--- a/views/lists/subscription/edit.hbs
+++ b/views/lists/subscription/edit.hbs
@@ -67,6 +67,10 @@
                     <textarea class="form-control" rows="3" name="{{column}}">{{value}}</textarea>
                 {{/if}}
 
+                {{#if typeJson}}
+                    <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="{&quot;data&quot;:&quot;value&quot;}">{{value}}</textarea>
+                {{/if}}
+
                 {{#if typeGpg}}
                     <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="Begins with &#39;-----BEGIN PGP PUBLIC KEY BLOCK-----&#39;">{{value}}</textarea>
                     <span class="help-block">Insert a GPG public key that will be used to encrypt messages sent this subscriber</span>
diff --git a/views/subscription/manage.hbs b/views/subscription/manage.hbs
index 2d025369..8e278905 100644
--- a/views/subscription/manage.hbs
+++ b/views/subscription/manage.hbs
@@ -48,6 +48,10 @@
                 <textarea class="form-control" rows="3" name="{{column}}">{{value}}</textarea>
             {{/if}}
 
+            {{#if typeJson}}
+                <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="{&quot;data&quot;:&quot;value&quot;}">{{value}}</textarea>
+            {{/if}}
+
             {{#if typeGpg}}
                 {{#if ../hasPubkey}}
                     <div class="pull-right">
diff --git a/views/subscription/subscribe.hbs b/views/subscription/subscribe.hbs
index 567daf2b..6cc7eeb2 100644
--- a/views/subscription/subscribe.hbs
+++ b/views/subscription/subscribe.hbs
@@ -45,6 +45,10 @@
                 <textarea class="form-control" rows="3" name="{{column}}">{{value}}</textarea>
             {{/if}}
 
+            {{#if typeJson}}
+                <textarea class="form-control gpg-text" rows="3" name="{{column}}" placeholder="{&quot;data&quot;:&quot;value&quot;}">{{value}}</textarea>
+            {{/if}}
+
             {{#if typeGpg}}
                 {{#if ../hasPubkey}}
                     <div class="pull-right">