Is there a way to bulk test multple domains and mailboxes? To bulk test deliverability from multiple email addresses, you can consider these options: smart tests, automatic tests, API.
What is a smart test? A smart test is a quick test that works via one proxy email address. Smart tests suit perfectly for any email messages including transactional emails that are sent to one recipient at a time. To use a smart test, perform these quick steps.
Can I choose seed emails individually to get a shorter seed list? Currently, you can only choose inbox providers that will be included in your seed list. In manual tests, you can use a split seed list; in smart tests and automatic tests, you can use email throttling to set a delay between the messages.