diff --git a/doc/index.html b/doc/index.html
index 5e25e4d..5db3a85 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -533,12 +533,12 @@ data-styled.g140[id="sc-global-kJtbWf1"]{content:"sc-global-kJtbWf1,"}/*!sc*/
 </div></div></div></td></tr><tr><td class="sc-fzqBZW sc-fzoyAV sc-fzokvW ilQYAU" kind="field" title="bccs"><span class="sc-fzoXzr jYkWkg"></span><button aria-label="expand properties">bccs<svg class="sc-fznKkj czpFYH" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button></td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa">Array of </span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">objects</span><span class="sc-fzqzlV sc-fzoMdx klHALA"> (<!-- -->Recipient<!-- -->) </span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>Array of <code>Recipient</code> objects to be used as &quot;BCC:&quot; addresses for the email</p>
 </div></div></div></td></tr><tr><td class="sc-fzqBZW sc-fzoyAV sc-fzokvW ilQYAU" kind="field" title="attachments"><span class="sc-fzoXzr jYkWkg"></span><button aria-label="expand properties">attachments<svg class="sc-fznKkj czpFYH" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button></td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa">Array of </span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">objects</span><span class="sc-fzqzlV sc-fzoMdx klHALA"> (<!-- -->Attachment<!-- -->) </span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>Array of <code>Attachment</code> objects to be attached to the email</p>
 </div></div></div></td></tr><tr><td class="sc-fzqBZW sc-fzoyAV sc-fzokvW ilQYAU" kind="field" title="placeholders"><span class="sc-fzoXzr jYkWkg"></span><button aria-label="expand properties">placeholders<svg class="sc-fznKkj czpFYH" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button></td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa">Array of </span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">objects</span><span class="sc-fzqzlV sc-fzoMdx klHALA"> (<!-- -->Placeholder<!-- -->) </span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>Array of <code>Placeholder</code> objects. Any occurrences of <code>{PLACEHOLDER_NAME}</code> (<code>name</code> in all caps enclosed with curly brackets) in the email&#39;s HTML or plain text will be replaced by <code>value</code>.</p>
-</div></div></div></td></tr><tr><td class="sc-fzqBZW sc-fzoyAV sc-fzokvW ilQYAU" kind="field" title="config"><span class="sc-fzoXzr jYkWkg"></span><button aria-label="expand properties">config<svg class="sc-fznKkj czpFYH" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button></td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa">Array of </span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">objects</span><span class="sc-fzqzlV sc-fzoMdx klHALA"> (<!-- -->Config<!-- -->) </span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>Array of <code>Config</code> objects to change the default behaviour</p>
+</div></div></div></td></tr><tr><td class="sc-fzqBZW sc-fzoyAV ewSDWh" kind="field" title="config"><span class="sc-fzoXzr jYkWkg"></span>config</td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa">Array of </span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">strings</span><span class="sc-fzqzlV sc-fzoMdx klHALA"> (<!-- -->Config<!-- -->) </span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>Array of <code>Config</code> objects to change the default behaviour</p>
 </div></div></div></td></tr><tr class="last undefined"><td class="sc-fzqBZW sc-fzoyAV ewSDWh" kind="field" title="key"><span class="sc-fzoXzr jYkWkg"></span>key<div class="sc-fzoWqW sc-fzplgP chnCRo"> required </div></td><td class="sc-fzoLag fNYEXC"><div><div><span class="sc-fzqzlV sc-fzqLLg ghLFqa"></span><span class="sc-fzqzlV sc-fzoxnE iMySHJ">string</span></div> <div><div class="sc-fzoant sc-fzoYHE eTVXpd"><p>API key to authenticate request with</p>
 </div></div></div></td></tr></tbody></table><div><h3 class="sc-pbIaG kfpsaT">Responses</h3><div><button class="sc-pJurq eyfSne"><svg class="sc-fznKkj fscamO" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg><strong>200<!-- --> </strong><span class="sc-fzpkqZ ebKPJY"><p>The request was received and processed.</p>
-</span></button></div></div></div><div class="sc-AxgMl sc-AxheI hkIgFQ"><div class="sc-oTbqq fJLoZr"><button class="sc-pjSSY ewatGX"><span type="post" class="sc-prOVx hObpXE http-verb post">post</span><span class="sc-paXsP bhaFYt">/sender.php</span><svg class="sc-fznKkj ejwrda" style="margin-right:-25px" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button><div aria-hidden="true" class="sc-qQmou laHEoQ"><div class="sc-qYiqT kPAzCv"><div class="sc-fzoant sc-fzoYHE eTVXpd"></div><div tabindex="0" role="button"><div class="sc-pAZqv cGlHkj"><span>https://expmail.kumi.live</span>/sender.php</div></div></div></div></div><div><h3 class="sc-fzpans lerNRm"> Request samples </h3><div class="sc-fznzOf jLdbSQ" data-tabs="true"><ul class="react-tabs__tab-list" role="tablist"><li class="react-tabs__tab react-tabs__tab--selected" role="tab" id="react-tabs-0" aria-selected="true" aria-disabled="false" aria-controls="react-tabs-1" tabindex="0">Payload</li></ul><div class="react-tabs__tab-panel react-tabs__tab-panel--selected" role="tabpanel" id="react-tabs-1" aria-labelledby="react-tabs-0"><div><div class="sc-fzpisO dBHtDj"><span class="sc-fzoVTD kNWQuy">Content type</span><div class="sc-fzoJus ixzWHz">application/json</div></div><div class="sc-fznXWL iZtsQe"><div class="sc-fzqMdD cDvkPr"><div class="sc-fzomME ldXyaM"><button><div class="sc-fznAgC jKdGWZ">Copy</div></button><button> Expand all </button><button> Collapse all </button></div><div class="sc-fzoant gGXDRA sc-fzowVh iKXZfK"><div class="redoc-json"><code><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable "><span class="property token string">"subject"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"html"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"htmlurl"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"text"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"texturl"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"sender"</span>: <div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"recipients"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"ccs"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"bccs"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"attachments"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"url"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"filename"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"cid"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"placeholders"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"value"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"config"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"key"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"key"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></code></div></div></div></div></div></div></div></div><div><h3 class="sc-fzpans lerNRm"> Response samples </h3><div class="sc-fznzOf jLdbSQ" data-tabs="true"><ul class="react-tabs__tab-list" role="tablist"><li class="tab-success react-tabs__tab--selected" role="tab" id="react-tabs-2" aria-selected="true" aria-disabled="false" aria-controls="react-tabs-3" tabindex="0">200</li></ul><div class="react-tabs__tab-panel react-tabs__tab-panel--selected" role="tabpanel" id="react-tabs-3" aria-labelledby="react-tabs-2"><div><div class="sc-fzpisO dBHtDj"><span class="sc-fzoVTD kNWQuy">Content type</span><div class="sc-fzoJus ixzWHz">application/json</div></div><div class="sc-fznXWL iZtsQe"><div class="sc-fzqMdD cDvkPr"><div class="sc-fzomME ldXyaM"><button><div class="sc-fznAgC jKdGWZ">Copy</div></button><button> Expand all </button><button> Collapse all </button></div><div class="sc-fzoant gGXDRA sc-fzowVh iKXZfK"><div class="redoc-json"><code><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable "><span class="property token string">"status"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"error"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></code></div></div></div></div></div></div></div></div></div></div></div></div><div class="sc-oTNDV izusvA"></div></div></div>
+</span></button></div></div></div><div class="sc-AxgMl sc-AxheI hkIgFQ"><div class="sc-oTbqq fJLoZr"><button class="sc-pjSSY ewatGX"><span type="post" class="sc-prOVx hObpXE http-verb post">post</span><span class="sc-paXsP bhaFYt">/sender.php</span><svg class="sc-fznKkj ejwrda" style="margin-right:-25px" version="1.1" viewBox="0 0 24 24" x="0" xmlns="http://www.w3.org/2000/svg" y="0" aria-hidden="true"><polygon points="17.3 8.3 12 13.6 6.7 8.3 5.3 9.7 12 16.4 18.7 9.7 "></polygon></svg></button><div aria-hidden="true" class="sc-qQmou laHEoQ"><div class="sc-qYiqT kPAzCv"><div class="sc-fzoant sc-fzoYHE eTVXpd"></div><div tabindex="0" role="button"><div class="sc-pAZqv cGlHkj"><span>https://expmail.kumi.live</span>/sender.php</div></div></div></div></div><div><h3 class="sc-fzpans lerNRm"> Request samples </h3><div class="sc-fznzOf jLdbSQ" data-tabs="true"><ul class="react-tabs__tab-list" role="tablist"><li class="react-tabs__tab react-tabs__tab--selected" role="tab" id="react-tabs-0" aria-selected="true" aria-disabled="false" aria-controls="react-tabs-1" tabindex="0">Payload</li></ul><div class="react-tabs__tab-panel react-tabs__tab-panel--selected" role="tabpanel" id="react-tabs-1" aria-labelledby="react-tabs-0"><div><div class="sc-fzpisO dBHtDj"><span class="sc-fzoVTD kNWQuy">Content type</span><div class="sc-fzoJus ixzWHz">application/json</div></div><div class="sc-fznXWL iZtsQe"><div class="sc-fzqMdD cDvkPr"><div class="sc-fzomME ldXyaM"><button><div class="sc-fznAgC jKdGWZ">Copy</div></button><button> Expand all </button><button> Collapse all </button></div><div class="sc-fzoant gGXDRA sc-fzowVh iKXZfK"><div class="redoc-json"><code><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable "><span class="property token string">"subject"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"html"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"htmlurl"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"text"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"texturl"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"sender"</span>: <div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"recipients"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"ccs"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"bccs"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"email"</span>: <span class="token string">&quot;user@example.com&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"attachments"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"url"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"filename"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"cid"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"placeholders"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable collapsed"><span class="property token string">"name"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable collapsed"><span class="property token string">"value"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"config"</span>: <div class="collapser"></div><span class="token punctuation">[</span><span class="ellipsis"></span><ul class="array collapsible"><li><div class="hoverable collapsed"><span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">]</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"key"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></code></div></div></div></div></div></div></div></div><div><h3 class="sc-fzpans lerNRm"> Response samples </h3><div class="sc-fznzOf jLdbSQ" data-tabs="true"><ul class="react-tabs__tab-list" role="tablist"><li class="tab-success react-tabs__tab--selected" role="tab" id="react-tabs-2" aria-selected="true" aria-disabled="false" aria-controls="react-tabs-3" tabindex="0">200</li></ul><div class="react-tabs__tab-panel react-tabs__tab-panel--selected" role="tabpanel" id="react-tabs-3" aria-labelledby="react-tabs-2"><div><div class="sc-fzpisO dBHtDj"><span class="sc-fzoVTD kNWQuy">Content type</span><div class="sc-fzoJus ixzWHz">application/json</div></div><div class="sc-fznXWL iZtsQe"><div class="sc-fzqMdD cDvkPr"><div class="sc-fzomME ldXyaM"><button><div class="sc-fznAgC jKdGWZ">Copy</div></button><button> Expand all </button><button> Collapse all </button></div><div class="sc-fzoant gGXDRA sc-fzowVh iKXZfK"><div class="redoc-json"><code><div class="collapser"></div><span class="token punctuation">{</span><span class="ellipsis"></span><ul class="obj collapsible"><li><div class="hoverable "><span class="property token string">"status"</span>: <span class="token string">&quot;string&quot;</span><span class="token punctuation">,</span></div></li><li><div class="hoverable "><span class="property token string">"error"</span>: <span class="token string">&quot;string&quot;</span></div></li></ul><span class="token punctuation">}</span></code></div></div></div></div></div></div></div></div></div></div></div></div><div class="sc-oTNDV izusvA"></div></div></div>
     <script>
-    const __redoc_state = {"menu":{"activeItemIdx":-1},"spec":{"data":{"openapi":"3.0.0","info":{"description":"A simple endpoint to send email messages","version":"0.4","title":"EXPMail","contact":{"email":"support@kumi.systems"}},"tags":[{"name":"sending","description":"Sending out an email"}],"paths":{"/sender.php":{"post":{"tags":["sending"],"summary":"Send out an email","operationId":"sendMail","requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Mail"}}},"description":"Object defining the email message to be sent","required":true},"responses":{"200":{"description":"The request was received and processed.","content":{"application/json":{"schema":{"type":"object","properties":{"status":{"type":"string","description":"\"Success\" if message was successfully sent, else \"error\""},"error":{"type":"string","description":"Error message, only included if an error has occurred"}}}}}}}}}},"servers":[{"url":"https://expmail.kumi.live"}],"components":{"schemas":{"Config":{"type":"object","required":["key"],"properties":{"key":{"type":"string","description":"Key of the config setting\n * `noconversion` - Do not automatically convert HTML to plain text if no plain text message is explicitly given\n * `ignoredlfails` - If an attachment fails to download, just leave it out and continue processing the message\n"}}},"Placeholder":{"type":"object","required":["name"],"properties":{"name":{"type":"string","description":"Name of the placeholder - will be converted to ALL CAPS by the server if it isn't already"},"value":{"type":"string","description":"Value to insert into placeholder"}}},"Attachment":{"type":"object","required":["url"],"properties":{"url":{"type":"string","format":"url","description":"URL from where to fetch the file to attach"},"filename":{"type":"string","description":"File name to use for email attachment. If not set, defaults to name from Content-Disposition header of URL if it exists, else the base name of the URL."},"cid":{"type":"string","description":"Content ID for the attachment, needed for embedded images - use something like `<img src=\"cid:YOUR_CID\">` in your HTML code"}}},"Recipient":{"type":"object","required":["email"],"properties":{"email":{"type":"string","format":"email","description":"Email address of the recipient"},"name":{"type":"string","description":"Name of the recipient"}}},"Mail":{"type":"object","required":["recipients","key"],"properties":{"subject":{"type":"string","description":"Subject of the email"},"html":{"type":"string","description":"String containing the HTML content of the email. Takes precedence over `htmlurl` if provided. 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If not set, defaults to name from Content-Disposition header of URL if it exists, else the base name of the URL."},"cid":{"type":"string","description":"Content ID for the attachment, needed for embedded images - use something like `<img src=\"cid:YOUR_CID\">` in your HTML code"}}},"Recipient":{"type":"object","required":["email"],"properties":{"email":{"type":"string","format":"email","description":"Email address of the recipient"},"name":{"type":"string","description":"Name of the recipient"}}},"Mail":{"type":"object","required":["recipients","key"],"properties":{"subject":{"type":"string","description":"Subject of the email"},"html":{"type":"string","description":"String containing the HTML content of the email. Takes precedence over `htmlurl` if provided. 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If both `texturl` and `html` or `htmlurl` are provided, will create a multi-part MIME message."},"sender":{"allOf":[{"description":"`Recipient` object to be used as \"From:\" address for the email"},{"$ref":"#/components/schemas/Recipient"}]},"recipients":{"type":"array","description":"Array of `Recipient` objects to be used as \"To:\" addresses for the email","items":{"$ref":"#/components/schemas/Recipient"}},"ccs":{"type":"array","description":"Array of `Recipient` objects to be used as \"CC:\" addresses for the email","items":{"$ref":"#/components/schemas/Recipient"}},"bccs":{"type":"array","description":"Array of `Recipient` objects to be used as \"BCC:\" addresses for the email","items":{"$ref":"#/components/schemas/Recipient"}},"attachments":{"type":"array","description":"Array of `Attachment` objects to be attached to the email","items":{"$ref":"#/components/schemas/Attachment"}},"placeholders":{"type":"array","description":"Array of `Placeholder` objects. 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diff --git a/doc/swagger.yaml b/doc/swagger.yaml
index 7dc10c9..6809f7a 100644
--- a/doc/swagger.yaml
+++ b/doc/swagger.yaml
@@ -41,7 +41,7 @@ servers:
 components:
   schemas:
     Config:
-      type: object
+      type: string
       required:
         - key
       properties:
@@ -141,7 +141,7 @@ components:
             $ref: '#/components/schemas/Placeholder'
         config:
           type: array
-          description: 'Array of `Config` objects to change the default behaviour'
+          description: 'Array of `Config` keys to change the default behaviour'
           items:
             $ref: '#/components/schemas/Config'
         key: