Jul 29, 2021 · Jul 26, 2021
diff --git a/mailer.rst b/mailer.rst
    For example, the DSN ``ses+smtp://ABC1234:abc+12/345@default`` should be
    configured as ``ses+smtp://ABC1234:abc%2B12%2F345@default``

 .. caution::

    If you want to use ``ses+smtp`` transport together with :doc:`Messenger </messenger>`
    to :ref:`send messages in background <mailer-sending-messages-async>`,
    you need to add ``ping_threshold`` parameter to your ``MAILER_DSN`` with
    value lower than ``10``: ``ses+smtp://USERNAME:PASSWORD@default?ping_threshold=9``

    .. versionadded:: 5.4

        The ``ping_threshold`` option for ``ses-smtp`` was introduced in Symfony 5.4.

 .. note::

    When using SMTP, the default timeout for sending a message before throwing an
    $email->getHeaders()->addTextHeader('X-Transport', 'alternative');
    $mailer->send($email);

 .. _mailer-sending-messages-async:

 Sending Messages Async
 ----------------------
Original file line number	Diff line number	Diff line change
Expand Up		@@ -174,6 +174,17 @@ party provider:
		For example, the DSN ``ses+smtp://ABC1234:abc+12/345@default`` should be
		configured as ``ses+smtp://ABC1234:abc%2B12%2F345@default``

		.. caution::

		If you want to use ``ses+smtp`` transport together with :doc:`Messenger </messenger>`
		to :ref:`send messages in background <mailer-sending-messages-async>`,
		you need to add ``ping_threshold`` parameter to your ``MAILER_DSN`` with
		value lower than ``10``: ``ses+smtp://USERNAME:PASSWORD@default?ping_threshold=9``
Tyraelqp marked this conversation as resolved. Show resolvedHide resolved

		.. versionadded:: 5.4

		The ``ping_threshold`` option for ``ses-smtp`` was introduced in Symfony 5.4.

		.. note::

		When using SMTP, the default timeout for sending a message before throwing an
Expand DownExpand Up		@@ -1112,6 +1123,8 @@ the final email)::
		$email->getHeaders()->addTextHeader('X-Transport', 'alternative');
		$mailer->send($email);

		.. _mailer-sending-messages-async:
Tyraelqp marked this conversation as resolved. Show resolvedHide resolved

		Sending Messages Async
		----------------------

Expand Down