Need HTML - VBA code for sending email with multiple lines in body

Hello all,

I am trying to create a macro in an excel, where i click on a button and it sends out email.

I've following requirement.

1) I want to have at least 30 ppl in TO,cc and Bcc filed
2) the email body should be of multiple lines with html tag support so i can bold, underline text where ever i required.

I am using following VBA code with .HTMLBoday as email body but in this code, i am not able to add more than one line in the email body.

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Sub Send_Email_Using_VBA()
Dim Email_Subject, Email_Send_From, Email_Send_To, _
Email_Cc, Email_Bcc, Email_Body As String
Dim Mail_Object, Mail_Single As Variant
Email_Subject = "Trying to send email using VBA with HTML tags"
Email_Send_From = "abc@xyz.com"
Email_Send_To = "abc@xyz.com"


Email_Body = "I have successfully sent an <I> e-mail </I> using <B> VBA </B> !!!!"
On Error GoTo debugs
Set Mail_Object = CreateObject("Outlook.Application")
Set Mail_Single = Mail_Object.CreateItem(0)
With Mail_Single
.Subject = Email_Subject
.To = Email_Send_To
.cc = Email_Cc
.BCC = Email_Bcc
.HTMLBody = Email_Body
.send
End With
debugs:
If Err.Description <> "" Then MsgBox Err.Description
End Sub

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Please help by providing the new code.

Thanks in advance.