Email notification on Send Limit exceedance

[petr-larin]

Per Postal docs:

You will be notified by e-mail (and with a webhook if enabled) when you are approaching and/or exceeding your limits.

My expectation was that I would receive the notification to the Admin email, however, this didn't happed. Is it possible to elaborate on how to configure that email?

[willpower232]

Did you configure Postals ability to send its own emails? This is under the smtp: heading, not the smtp_server: heading

postal/doc/config/yaml.yml

Lines 155 to 175 in d532922

	smtp:
	# The hostname to send application-level e-mails to
	host: 127.0.0.1
	# The port number to send application-level e-mails to
	port: 25
	# The username to use when authentication to the SMTP server
	username:
	# The password to use when authentication to the SMTP server
	password:
	# The type of authentication to use
	authentication_type: login
	# Use STARTTLS when connecting to the SMTP server and fail if unsupported
	enable_starttls: false
	# Detects if STARTTLS is enabled in the SMTP server and starts to use it
	enable_starttls_auto: true
	# When using TLS, you can set how OpenSSL checks the certificate. Use 'none' for no certificate checking
	openssl_verify_mode: peer
	# The name to use as the from name outgoing emails from Postal
	from_name: Postal
	# The e-mail to use as the from address outgoing emails from Postal
	from_address: postal@example.com

[petr-larin]

Many thanks! I'll try this and let you know the outcome!

[petr-larin]

Unfortunately this is still not working. I have included the following config:

smtp:
     # Specify an SMTP server that can be used to send messages from the Postal management
     # system to users. You can configure this to use a Postal mail server once the
     # your installation has been set up.
     host: 127.0.0.1
     port: 25
     username: "1t/lms"
     password: "<the KEY for the Cred>"
     from_name: Postal
     from_address: postal-notification@1t.ru

I'm not sure where the notification is sent to - my only guess that would be the email address of the admin user under My Settings, or am I wrong? Do I need to configure that email somewhere?

In the UI and worker logs I see that the send limit exceedance is conformed:
2026-03-02 07:34:21 +0000 INFO server send limit has been exceeded, holding send_limit=4 component=worker thread=work0 original_queued_message=9005 queued_message=9005
I also see this:
2026-03-02 07:34:39 +0000 INFO running task component=worker thread=tasks task=SendNotificationsScheduledTask

but the email never arrives at the admin's address.
Please help!

[willpower232]

Judging by this, it looks like these emails are only emailed to direct users of the organization. I expect you can probably jerry rig it directly in the database through the link table but I'm not sure off the top of my head if that would accidentally cut you off from the rest of the admin.

postal/app/mailers/app_mailer.rb

Lines 18 to 26 in d532922

	def server_send_limit_approaching(server)
	@server = server
	mail to: @server.organization.notification_addresses, subject: "[#{server.full_permalink}] Mail server is approaching its send limit"
	end
	def server_send_limit_exceeded(server)
	@server = server
	mail to: @server.organization.notification_addresses, subject: "[#{server.full_permalink}] Mail server has exceeded its send limit"
	end

postal/app/models/organization.rb

Lines 85 to 87 in d532922

	def notification_addresses
	users.map(&:email_tag)
	end

[petr-larin]

I added a non-admin user scoped just to one org, and it did triggere a alert, thank you!
The alert arrived when I exceeded the limit.
I see in your code snippet that another alert might be triggered when "Mail server is approaching its send limit", but this one didn't trigger. Perhaps this function is never actually called.

[willpower232]

Its supposed to be from a cron job I think but maybe it isn't working quite how the devs expected

postal/app/scheduled_tasks/send_notifications_scheduled_task.rb

Line 6 in d532922

Server.send_send_limit_notifications

it looks like there is a notified_at column for each kind so perhaps you can see whether they're filled in or not, I guess its also possible that the limit was reached too quickly so the approaching never had time to get detected?

postal/app/models/server.rb

Lines 206 to 213 in d532922

	def send_limit_warning(type)
	if organization.notification_addresses.present?
	AppMailer.send("server_send_limit_#{type}", self).deliver
	end
	update_column("send_limit_#{type}_notified_at", Time.now)
	WebhookRequest.trigger(self, "SendLimit#{type.to_s.capitalize}", server: webhook_hash, volume: send_volume, limit: send_limit)
	end

[petr-larin]

OK time will show if this alert ever arrives, thank you for your time!