The list you want to search for the contact.

Phone number you want to search. Must be in full international format **without** the leading + (E.164 format). Eg. 6141111111.

The list where you want to add the contact.

The contact phone in local or international format e.g. +61411111111.

The contact's country. Must be a 2-character country code e.g. "US", "AU", "GB".

The list where you want to remove the contact.

The contact_id of the contact you want to delete. This is returned when originally adding the contact. If you don't have it you can use the search in Zapier to search for the contact, then use the contact_id from the response.

The list that you want to remove. Will require a list ID that will generally have to be returned from other actions.

Phone number in E.164 format. Eg. +61261111111.

This is your reference. It will show on all reports and will be passed back with any replies.

Mobile phone number. Can be in local or international format. Must be in international (E.164) format if sending to another country. e.g +61411111111.

Message body. Up to 1500 characters or 500 unicode characters [View GSM Characters](https://en.wikipedia.org/wiki/GSM_03.38).

Allows a message to be scheduled. Time must be in [Unix format](http://help.clicksend.com/what-is-a-unix-timestamp) e.g. 1462788759. Leave blank for instant delivery.

From number - use a ClickSend dedicated number that you've purchased (anything else will fail). If you don't have a ClickSend number, leave it blank.

A URL of the media file you want to send.

Give your campaign a name. Ie. January Marketing Campaign

A contact list to send to. You can add/manage contact lists via the ClickSend dashboard.

Enter the phone number or business name (alpha tag) you’re sending from. If you use a business name e.g. ‘My Company’, you won’t receive replies. If you’re sending to the US/Canada leave this field blank or use the dedicated number you purchased via ClickSend.  [More Info](http://help.clicksend.com/SMS/what-is-a-sender-id-or-sender-number).

The URL of the media file you want to send.

Enter a subject line for your MMS. Max 20 characters.

Learn about character and message limits.  [More Info](http://help.clicksend.com/SMS/how-many-characters-can-i-send-in-an-sms).

Schedule your MMS to be sent. Time must be in [Unix format](http://help.clicksend.com/what-is-a-unix-timestamp) e.g. 1462788759. To send your MMS instantly, leave this field blank.

A public URL to the postcard PDF file. Can be a single file with 1 page (front only) or 2 pages (front and back) or 2 files with a single page each. [View Template](http://help.clicksend.com/post/postcard-template).

If you're not sure what a public URL is, more info can be found [here](https://help.clicksend.com/article/dllnzr34mj-pdf-file-upload-for-letters-postcards-for-use-on-zapier).

The address country. Must be a 2-digit country code e.g. "US", "AU", "GB".

Return address - you can manage return addresses on the ClickSend Dashboard [Open Dashboard](https://dashboard.clicksend.com/messaging-settings/post/return-addresses) or via our API.

Choose delivery priority. Options are Standard or Priority post.

A public URL to the PDF file. If you're not sure what this is, more info can be found [here](https://help.clicksend.com/article/dllnzr34mj-pdf-file-upload-for-letters-postcards-for-use-on-zapier).

Choose if you've used our template file or not. If 'no', we insert a blank addressed page as the first page. View our template [here](https://help.clicksend.com/article/wcpkkoou6c-post-letter-template).

Choose to use Duplex (double-sided) or Simplex (single sided) printing.

Return address - you can manage return addresses on the ClickSend Dashboard: [Open Dashboard](https://dashboard.clicksend.com/messaging-settings/post/return-addresses) or via our API).

Learn about [message limits](http://help.clicksend.com/SMS/how-many-characters-can-i-send-in-an-sms).

Allows a message to be scheduled. Time must be in [Unix format](http://help.clicksend.com/what-is-a-unix-timestamp) e.g. 1462788759. Leave blank for instant delivery.
.

From number or name - where the message comes 'from' on the handset. If you're sending to the US/Canada leave this field blank or use a ClickSend dedicated number that you've purchased (anything else will fail). If you use a name for the from address e.g. "MyCompany", the receiver won't be able to reply. [More Info](http://help.clicksend.com/SMS/what-is-a-sender-id-or-sender-number).

If you supply a Contact ID of a contact (optional), we will link the contact to the message on the ClickSend dashboard. You can get the contact ID after adding a contact or from a contact search.

Mobile or landline phone number in local or international format. Must be in international format (E.164) if sending to a different country.e.g. +61411111111.

Choose which language you want to use. Full list here: [Open Docs](http://docs.clicksend.apiary.io/#reference/voice).

Choose the message to be read out in a Male of Female voice.

The from number. This must be a valid ClickSend dedicated number.

Allows a message to be scheduled. Time must be in Unix format e.g. 1462788759. Leave blank for instant delivery.
More info can be found here: [Open Docs](http://help.clicksend.com/what-is-a-unix-timestamp).

API docs for ClickSend SMS are located here http://docs.clicksend.apiary.io/

Requests can only be made to domains associated by this application. View [documentation](https://help.zapier.com/hc/en-us/articles/12899607716493) for more details.

These params will be URL-encoded and appended to the URL when making the request.

Authentication headers are included automatically

Zapier will apply these optional headers and values to the request in addition to any headers created as part of the authentication mechanism.

Zapier will pass this along raw. If you would like to provide complex JSON, try a "Code by Zapier" step to build the structure and pass it along here. For example, `{"foo": "bar"}` is perfectly valid.

ClickSend is a cloud-based service that lets you send and receive SMS, Email, Voice, Fax and Letters worldwide.

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