Mobile website “WhatsApp” button to send message to a specific number

Format to send a WhatsApp message to a specific number (updated Nov 2018)

<a href="https://wa.me/whatsappphonenumber/?text=urlencodedtext"></a>

where

whatsappphonenumber is a full phone number in international format

urlencodedtext is the URL-encoded pre-filled message.


Example:

  1. Create a link with a pre-filled message that will
    automatically appear in the text field of a chat, to be sent to a specific number

    Send I am interested in your car for sale to +001-(555)1234567

    https://wa.me/15551234567?text=I%20am%20interested%20in%20your%20car%20for%20sale

    Note :

    Use: https://wa.me/15551234567

    Don’t use: https://wa.me/+001-(555)1234567

  2. Create a link with just a pre-filled message that will
    automatically appear in the text field of a chat, number will be chosen by the user

    Send I am enquiring about the apartment listing

    https://wa.me/?text=I%20am%20enquiring%20about%20the%20apartment%20listing

    After clicking on the link, user will be shown a list of contacts they
    can send the pre-filled message to.

For more information, see https://www.whatsapp.com/faq/en/general/26000030

P.S : Older format (before updation) for reference

<a href="https://api.whatsapp.com/send?phone=whatsappphonenumber&text=urlencodedtext"></a>

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