Why is DDL command not executing stored procedure

I'm trying to write a DDL trigger that will send an email if someone tries to a drop a database.  I have dropped my sample code below.  The trigger works in that the Rollback prevents the database from being dropped, but the stored procedure does not appear to run at all and so a message isn't sent.  The same store procedure does work on a similar DDL script for DROP TABLE.

USE [master]
GO

/****** Object:  DdlTrigger [ddl_trig_database]    Script Date: 10/29/2017 11:13:57 PM ******/
SET ANSI_NULLS OFF
GO

SET QUOTED_IDENTIFIER OFF
GO

alter TRIGGER [ddl_trig_database]  
ON ALL SERVER  
FOR Drop_DATABASE  
AS  
   DECLARE @eventData XML,
        @otext VARCHAR(MAX),
        @edate DATETIME,
            @Msg varchar(max)

set @edate=GETDATE()
SET @eventData = EVENTDATA()      
select  @otext=@eventData.value('data(/EVENT_INSTANCE/ObjectName)[1]', 'SYSNAME')      

set @msg = ' Delete attempt on database ' + convert(varchar(26),@edate,100) + '  ' + @otext

exec demo.dbo.SendInternetEmail 'RECIPIENT@gmail.com', 'Dropped database', @msg, 'SENDER@gmail.com'
rollback

GO

SET ANSI_NULLS OFF
GO

SET QUOTED_IDENTIFIER OFF
GO

ENABLE TRIGGER [ddl_trig_database] ON ALL SERVER
GO