synapse/res/templates/notif.txt

{% for message in notif.messages %}
{{ message.sender_name }} ({{ message.ts|format_ts("%H:%M") }})
{% if message.msgtype == "m.text" %}
{{ message.body_text_plain }}
{% elif message.msgtype == "m.image" %}
{{ message.body_text_plain }}
{% elif message.msgtype == "m.file" %}
{{ message.body_text_plain }}
{% endif %}
{% endfor %}

View at {{ notif.link }}