This page documents everything you need to know about setting up outgoing email in a Zulip production environment. It's pretty simple if you already have an outgoing SMTP provider; just start reading from the configuration section.
Free outgoing email services¶
For sending outgoing email from your Zulip server, we highly recommend using a "transactional email" service like Mailgun or for AWS users, Amazon SES. These services are designed to send email from servers, and are by far the easiest way to get outgoing email working reliably.
If you don't have an existing outgoing SMTP provider, don't worry! Both of the options we recommend above (as well as dozens of other services) have free options; we recommend Mailgun as the easiest to get setup with. Once you've signed up, you'll want to find the service's provided "SMTP credentials", and configure Zulip as follows:
- The hostname as
EMAIL_HOST = 'smtp.mailgun.org'in
- The username as
EMAIL_HOST_USER = 'firstname.lastname@example.org
- The password as
email_password = abcd1234in
Using Gmail for outgoing email¶
We don't recommend using an inbox product like Gmail for outgoing email, because Gmail's anti-spam measures make this annoying. But if you want to use a Gmail account to send outgoing email anyway, here's how to make it work:
- Create a totally new Gmail account for your Zulip server.
- Read this Google support answer and configure that account as "less secure"; Gmail doesn't allow servers to send outgoing email by default.
- Note also that the rate limits for Gmail are also quite low (e.g. 100 / day), so it's easy to get rate-limited.
Logging outgoing email to a file for prototyping¶
If for prototyping, you don't want to bother setting up an email
provider, you can add to
/etc/zulip/settings.py the following:
EMAIL_BACKEND = 'django.core.mail.backends.filebased.EmailBackend' EMAIL_FILE_PATH = '/var/log/zulip/emails'
Outgoing emails that Zulip would have sent will just be written to
/var/log/zulip/emails/. This is enough to get you through
initial user registration without an SMTP provider.
Remember to delete this configuration and restart the server if you later setup a real SMTP provider!
To configure outgoing SMTP, you will need to complete the following steps:
- Fill out the outgoing email sending configuration block in
EMAIL_HOST_USER. You may also need to set
EMAIL_PORTif your provider doesn't use the standard SMTP submission port (587).
- Put the SMTP password for
email_password = yourPassword.
Testing and troubleshooting¶
You can quickly test your outgoing email configuration using:
su zulip /home/zulip/deployments/current/manage.py send_test_email email@example.com
If it doesn't throw an error, it probably worked; you can confirm by checking your email.
It's important to test, because outgoing email often doesn't work the first time. Common causes of failures are:
- Your hosting provider blocking outgoing SMTP traffic in its
default firewall rules. Check whether
EMAIL_PORTis blocked in your hosting provider's firewall.
- Forgetting to put the password in
- Typos in transcribing the username or password.
Once you have it working from the management command, remember to
restart your Zulip server using
/home/zulip/deployments/current/restart-server so that the running
server is using the latest configuration.
Zulip's email sending configuration is based on the standard Django
configuration. The one thing we've changed from the defaults is
EMAIL_HOST_PASSWORD from the
email_password entry in the
Zulip secrets file, so that secrets don't live in the
So if you're having trouble getting your email provider working, you may want to search for documentation related to using your email provider with Django.