Use the steps below to configure the Account object for SMS messaging in Lightning or Classic.
Lightning
Update the Page Layout and Related List
Add the Do Not SMS Field.
- Go to Setup.
 - Click the Object Manager tab.
 - In the Quick Find box, search for and click “Account.”
 - Click the Page Layouts tab.
 - Select the layout type you need to update.
 - Click the Fields tab.
 - In the Quick Find box, search for the Do Not SMS (Account) field.
 - Drag and drop the Do Not SMS (Account) field onto the page layout.

 
Add the Related List
- Click the Related Lists tab.
 - In the Quick Find box, search for the “SMS Messages (Account)” Related List.
 - Drag and drop the Related List onto the page layout.
 - Click the Wrench icon to open the Properties for this related list.

 - Add these fields in the following order:
- Message Date
 - Direction
 - Message (Full)
 - Status
 - From Phone
 - To Phone
 - SMS Message Number
 
 - In the Sort By drop-down, choose "SMS Message Number" and "Descending."
 - Click the plus sign (+) located in the Buttons section.
 - Uncheck the box next to New and click Ok.
 - Click Save.
 
Lightning Record Page Layout
- Click the Lightning Record Pages tab.
 - Click the name of the layout you want to modify.
 - Click Edit.
 - Complete the following steps if you don't see any Lightning page layouts listed.
- Click New.
 - Choose Record Page.
 - Click Next.
 - Enter a Label (i.e. Account Layout).
 - Set Object = “Account.”
 - Click Next.
 - Click the Clone Salesforce Default Page tab.
 - Choose Account Record Page Default.
 - Click Done.
 
 - You should now be in the Lightning App Builder.
 - On the left-hand navigation bar, scroll down to the Custom-Managed section.
 - Locate the Blackthorn Messaging Messenger component.
 - Drag and drop the component onto the page layout.
 - The right-hand column will have the configuration options. We recommend keeping the Max Height (in pixels) = "400px", but you can modify it as needed.
- If you've added the component to a sidebar, set Column(s) = “One Column.”
 - If you've added it to a wide section of the page, you can set Column(s) = “Two Column” to maximize the space.
 
 - Click Save.

 - Click Activation.
 - Review the settings.
 - Click Close. Refresh your browser for the changes to take effect.
 - Open an Account record to see the Blackthorn Messaging Messenger component on your page.

 
Classic
Update the Page Layout and Related List
Add the Do Not SMS Field
- Go to Setup.
 - In the Quick Find box, enter “Accounts.”
 - Click Page Layouts.
 - Click Edit next to the layout type you need to modify. This will open the Page Layout Editor.
 - Click the Fields tab.
 - In the Quick Find box, search for the Do Not SMS field.
 - Drag and drop the Do Not SMS field onto the page layout.

 
Add the Related List
- Click the Related Lists tab.
 - In the Quick Find box, search for the “SMS Messages” Related List.
 - Drag and drop the Related List onto the page layout.
 - Click the Wrench icon to open the Properties for this related list.

 - Add these fields in the following order:
- Message Date
 - Direction
 - Message (Full)
 - Status
 - From Phone
 - To Phone
 - SMS Message Number
 
 - In the Sort By drop-down, choose "SMS Message Number" and "Descending."
 - Click the plus sign (+) located in the Buttons section.
 - Uncheck the box next to New and click Ok.
 - Save the page layout.
 
Classic Record Page Layout
- Click the Visualforce Pages tab.
 - Drag and drop the "+Section" on the page.
 - Enter a Section Name such as "Messaging."
 - Under Display Section Header On, check Detail Page and Edit Page.
 - Set Layout to “1-Column.”
 - Click Ok.

 - In the Visualforce Pages section, find the page named "SendLead_ltng."
 - Drag and drop SendLead_Itng in the section you just created.
 - Hover over the section and click the Wrench icon to open the Properties for this section.
 - Update the following fields.
- Change Height (in pixels) to "500."
 - Set Show scrollbars = “True” (checked).
 - Click Ok.

 
 - Click Save to save the page layout.