diff --git a/frappe/__init__.py b/frappe/__init__.py
index 9104cd5109..063a62c84b 100644
--- a/frappe/__init__.py
+++ b/frappe/__init__.py
@@ -78,7 +78,7 @@ class _dict(dict):
 		return _dict(self)
 
 
-def _(msg, lang=None, context=None):
+def _(msg, lang=None, context=None) -> str:
 	"""Returns translated string in current lang, if exists.
 	Usage:
 	        _('Change')
diff --git a/frappe/email/doctype/email_queue/email_queue.py b/frappe/email/doctype/email_queue/email_queue.py
index 4fc828eb62..c51446947c 100644
--- a/frappe/email/doctype/email_queue/email_queue.py
+++ b/frappe/email/doctype/email_queue/email_queue.py
@@ -181,7 +181,7 @@ def send_mail(email_queue_name, is_background_task=False):
 
 class SendMailContext:
 	def __init__(self, queue_doc: Document, is_background_task: bool = False):
-		self.queue_doc = queue_doc
+		self.queue_doc: EmailQueue = queue_doc
 		self.is_background_task = is_background_task
 		self.email_account_doc = queue_doc.get_email_account()
 		self.smtp_server = self.email_account_doc.get_smtp_server()
@@ -285,16 +285,16 @@ class SendMailContext:
 			).decode()
 		return message
 
-	def get_unsubscribe_str(self, recipient_email):
+	def get_unsubscribe_str(self, recipient_email: str) -> str:
 		unsubscribe_url = ""
+
 		if self.queue_doc.add_unsubscribe_link and self.queue_doc.reference_doctype:
-			doctype, doc_name = self.queue_doc.reference_doctype, self.queue_doc.reference_name
 			unsubscribe_url = get_unsubcribed_url(
-				doctype,
-				doc_name,
-				recipient_email,
-				self.queue_doc.unsubscribe_method,
-				self.queue_doc.unsubscribe_param,
+				reference_doctype=self.queue_doc.reference_doctype,
+				reference_name=self.queue_doc.reference_name,
+				email=recipient_email,
+				unsubscribe_method=self.queue_doc.unsubscribe_method,
+				unsubscribe_params=self.queue_doc.unsubscribe_param,
 			)
 
 		return quopri.encodestring(unsubscribe_url.encode()).decode()
diff --git a/frappe/email/email_body.py b/frappe/email/email_body.py
index 50c66e1ad2..3a952e1487 100755
--- a/frappe/email/email_body.py
+++ b/frappe/email/email_body.py
@@ -7,6 +7,7 @@ import re
 from email import policy
 from email.header import Header
 from email.mime.multipart import MIMEMultipart
+from typing import Optional
 
 import frappe
 from frappe.email.doctype.email_account.email_account import EmailAccount
@@ -353,7 +354,7 @@ def get_formatted_html(
 	print_html=None,
 	email_account=None,
 	header=None,
-	unsubscribe_link=None,
+	unsubscribe_link: Optional[frappe._dict] = None,
 	sender=None,
 	with_container=False,
 ):
diff --git a/frappe/email/queue.py b/frappe/email/queue.py
index 1519c26841..45abe0374a 100755
--- a/frappe/email/queue.py
+++ b/frappe/email/queue.py
@@ -67,37 +67,24 @@ def get_emails_sent_today(email_account=None):
 	return frappe.db.sql(q, q_args)[0][0]
 
 
-def get_unsubscribe_message(unsubscribe_message, expose_recipients):
-	if unsubscribe_message:
-		unsubscribe_html = """<a href="<!--unsubscribe_url-->"
-			target="_blank">{0}</a>""".format(
-			unsubscribe_message
-		)
-	else:
-		unsubscribe_link = """<a href="<!--unsubscribe_url-->"
-			target="_blank">{0}</a>""".format(
-			_("Unsubscribe")
-		)
-		unsubscribe_html = _("{0} to stop receiving emails of this type").format(unsubscribe_link)
-
-	html = """<div class="email-unsubscribe">
+def get_unsubscribe_message(
+	unsubscribe_message: str, expose_recipients: str
+) -> frappe._dict[str, str]:
+	unsubscribe_message = unsubscribe_message or _("Unsubscribe")
+	unsubscribe_link = f'<a href="<!--unsubscribe_url-->" target="_blank">{unsubscribe_message}</a>'
+	unsubscribe_html = _("{0} to stop receiving emails of this type").format(unsubscribe_link)
+	html = f"""<div class="email-unsubscribe">
 			<!--cc_message-->
 			<div>
-				{0}
+				{unsubscribe_html}
 			</div>
-		</div>""".format(
-		unsubscribe_html
-	)
+		</div>"""
 
+	text = f"\n\n{unsubscribe_message}: <!--unsubscribe_url-->\n"
 	if expose_recipients == "footer":
-		text = "\n<!--cc_message-->"
-	else:
-		text = ""
-	text += "\n\n{unsubscribe_message}: <!--unsubscribe_url-->\n".format(
-		unsubscribe_message=unsubscribe_message
-	)
+		text = f"\n<!--cc_message-->{text}"
 
-	return frappe._dict({"html": html, "text": text})
+	return frappe._dict(html=html, text=text)
 
 
 def get_unsubcribed_url(