fixed newsletter unsubscribe and default footer
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index dee46aa..09173f6 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -90,8 +90,11 @@
 	]
 }
 
-default_mail_footer = """<div style="padding: 7px; text-align: right;">
-	<a style="color: #888; font-size: 80%;" href="https://erpnext.com">Sent via ERPNext</a></div>"""
+default_mail_footer = """<div style="padding: 7px; margin-top: 7px; text-align: center;">
+	<a style="color: #8D99A6; font-size: 85%; text-decoration: none;" href="https://erpnext.com" target="_blank">
+		Sent via ERPNext
+	</a>
+</div>"""
 
 get_translated_dict = {
 	("page", "setup-wizard"): "frappe.geo.country_info.get_translated_dict",