Sending practices

smallrocksfloat.com

This domain belongs to a personal automation host operated by one person for their own use. It is not a product and has no customers, subscribers or mailing lists. All outbound mail is operational, machine-generated, and addressed to the operator's own verified addresses.

At a glance

Mail type: Transactional and operational only. No marketing, newsletters, or bulk mail.
Recipients: A fixed allowlist of two addresses, both belonging to the operator.
How obtained: Hard-coded in the infrastructure source. No sign-up form, no imported, rented or purchased addresses.
Volume: At most two messages per weekday; typically one. None on weekends.
Third parties: None. Mail is never sent to anyone other than the operator.

What is sent

Daily operations digest

One message on weekday mornings, after a scheduled job finishes. It summarises the operator's own calendar, tasks and system checks for that day. Sent once per calendar day; a restart does not produce a second copy.

Brief — Monday, October 5
Brief — Tuesday, October 6 (2 to approve, 1 job failing)

Failure alert

Sent only when the morning job does not run. A scheduled check reads the host's published metrics and reports if the run is missing or stale. On a healthy day this message is not sent at all.

pi-remote: the morning brief did not run
pi-remote: the morning brief is stale

Authentication

The sending domain is aligned on all three mechanisms:

SPF — v=spf1 include:amazonses.com ~all
DKIM — Easy DKIM, three CNAME records published in the hosted zone, signing enabled.
DMARC — p=quarantine, with aggregate reports delivered to an address on this domain.

Bounces and complaints

Every recipient is an address the operator controls and has verified, so there is no audience to suppress and no possibility of a complaint from a stranger. If an address bounces or reports a message, it is removed from the allowlist in source control and the change is deployed; that stops all mail to it. Sending volume and reputation are monitored through the account's own metrics.

Unsubscribing

There is nothing to subscribe to. The digest is switched off with a single setting on the host, and removing an address from the allowlist stops every message to it permanently.

Inbound mail

The domain also receives mail at a dedicated subdomain, which the operator uses to send himself tasks. Messages are accepted only after passing SPF and DKIM and matching the same two-address allowlist; everything else is discarded.