Phone links in email signatures do not open on mobile devices

Resolution:

The phone links in the email signature may fail to open on a mobile device when they contain a callto: extension.

Sigsync has several AD attribute placeholders for phone numbers such as 'telephoneNumber', 'mobilePhone', 'businessPhones' that enable you to add clickable links in the email signatures. The values for these placeholders are retrieved from the AD and when your recipient clicks on the link, it opens a supported application on their device that allows them to directly make a call or save the telephone number to their contacts.

To enable your recipients to open the telephone links in email signatures, replace the callto: in the Href field of the AD attribute with tel: in the Sigsync editor.

The following steps show how to change the Href in Sigsync for the phone number field.

1. Click on the phone number field in the signature template

   For instance, click on the 'businessPhones' field if you want to change the hyperlink for the business phone number.

   

2. Under Hyperlink, change the Href property of the businessPhones

   In the properties panel to the right, change the callto: extension in Href to tel: as shown in the screenshot.

   

   

3. Click the 'Save link' button to save the changes

   Repeat the preceding steps if you want to change the link for 'mobilePhone' and 'telephoneNumber'. Send a test mail to yourself and verify if you are able to open the links by clicking the phone number field in the email signature.

   Tip: If you want the phone number to go directly to the extension when your recipient clicks on it, change the Href by including the 'customAttribute' field next to the 'businessPhones' as shown.

   tel:${businessPhones};${customAttribute1}

   Ensure that the 'customAttribute1' field contains the value of the telephone extension for the AD user.

   See steps to set custom attribute in Office 365 and Sigsync

   

   After you set the custom attribute, the extension for the phone number is displayed in the Sigsync signature preview window.