smtp_to_telegram is a small program which listens for SMTP and sends
all incoming Email messages to Telegram.
Say you have a software which can send Email notifications via SMTP.
You may use smtp_to_telegram as an SMTP server so
the notification mail would be sent to the chosen Telegram chats.
- Create a new Telegram bot: https://core.telegram.org/bots#creating-a-new-bot.
- Open that bot account in the Telegram account which should receive
the messages, press
/start. - Retrieve a chat id with
curl https://api.telegram.org/bot<BOT_TOKEN>/getUpdates. - Repeat steps 2 and 3 for each Telegram account which should receive the messages.
- Start a docker container:
docker run \
--name smtp_to_telegram \
-e ST_TELEGRAM_CHAT_IDS=<CHAT_ID1>,<CHAT_ID2> \
-e ST_TELEGRAM_BOT_TOKEN=<BOT_TOKEN> \
kostyaesmukov/smtp_to_telegram
Assuming that your Email-sending software is running in docker as well,
you may use smtp_to_telegram:2525 as the target SMTP address.
No TLS or authentication is required.
The default Telegram message format is:
From: {from}\\nTo: {to}\\nSubject: {subject}\\n\\n{body}
A custom format might be specified as well:
docker run \
--name smtp_to_telegram \
-e ST_TELEGRAM_CHAT_IDS=<CHAT_ID1>,<CHAT_ID2> \
-e ST_TELEGRAM_BOT_TOKEN=<BOT_TOKEN> \
-e ST_TELEGRAM_MESSAGE_TEMPLATE="Subject: {subject}\\n\\n{body}" \
kostyaesmukov/smtp_to_telegram