How to set up a scalable blackhole email domain for testing?

Email marketer from Reddit mentions using a disposable email service for testing, as it provides temporary email addresses and avoids spamming real inboxes. This is a quick and easy way to generate addresses for testing purposes.

Email marketer from Indie Hackers suggests using a self-hosted email server to set up a blackhole. This requires technical expertise, but offers complete control over handling test emails.

Email marketer from Super User explains that plus addressing creates multiple email addresses from single mailbox. This allows categorisation and filtering during the testing process.

Email marketer from Email Marketing Forum recommends Mailtrap as a safe email testing environment. It captures emails sent from development environments and allows inspection without sending them to real recipients.

Email marketer from Email Deliverability Blog suggests using dedicated IP addresses for testing to isolate test email traffic from production email traffic.

Email marketer from Stack Overflow suggests setting up a Postfix server to receive and discard emails. It can be configured to accept all emails and either save them to disk for review or simply drop them, effectively creating a blackhole email server.

Email marketer from SaaS Website suggests using a service like PutsMail so they can test the content going out without sending any emails to customers. They can test the content and see if it is rendering correctly.

Email marketer from Webmaster Forum suggests using wildcard subdomains to create numerous unique email addresses for testing. This setup allows you to manage and monitor email traffic through a central system.

Expert from Spam Resource responds that it is useful to set up feedback loops (FBLs) with major ISPs for your test domain, if possible. This provides insights into spam complaints and helps refine testing practices.

Expert from Spam Resource shares that it's crucial to monitor bounce messages from your test domain. This helps identify any configuration issues or deliverability problems early on.

Expert from Email Geeks mentions that mailtrap, mailhog or your own postfix server will all be able to accept emails from other servers, which is a good way to reduce the amount of testing sent to random Gmail accounts.

Expert from Email Geeks suggests MailHog (<https://github.com/mailhog/MailHog>) as his favorite off-the-shelf package for running on your own server and suggests comparing to mailtrap.io as a SaaS solution.

Expert from Email Geeks shares that there are off-the-shelf open-source packages that will accept mail, store it for a while, and make it available via API. Custom code is also easy enough to put together if something different is needed.

Expert from Email Geeks says to use <http://www.postfix.org/smtp-sink.1.html|smtp-sink> to receive mail and then drop it on the floor, add that it is 100% open source, a part of Postfix, doesn't take a lot of power, and that i/o isn't a concern if you're not writing to disk.

Expert from Spam Resource explains that a dedicated test domain should be created and separated from your production domain. This allows testing without impacting your sender reputation.

Documentation from Postfix.org details using SMTP Sink, a part of Postfix, to receive and discard emails. It's an efficient way to handle incoming emails without delivering them, useful for testing email sending infrastructure.

Documentation from AWS Amazon explains that setting up SQS and routing emails to it allows for scalable email capture for processing in backend.

Documentation from GitHub explains that MailHog is an email testing tool for developers. It is easy to set up and provides an SMTP server with a web UI for viewing captured emails, useful for local testing without sending real emails.

Documentation from Docker Hub provides instructions on using Docker to containerize MailHog for easy deployment and scalability. This allows a consistent environment for testing email functionality across different development setups.