Hello everyone,
If you see this error show when scheduling your email, make sure to check the following sections of your email, either in the editor or on the scheduling screen:
Your subject line - check to see if removing any special characters (emojis, non-alphanumerical, etc.) allows the email to schedule as expected
The physical address - either in the footer when editing the email or at the bottom of the scheduling page, see if your address is missing any necessary info such as country, postal code, state/province, or other required information. Click to edit this section (will show as a pop-up within the same tab) and make sure the information populates correctly in this editing mode. Save it, even if you make no changes. See if the email will schedule as expected.
A filled-out header - besides the subject line, make sure the rest of your header is setup properly - a from name, from address, and reply-to address are also required elements. This can be check in the editing screen, as well as on the scheduling page. Once confirming and saving, even if you've made no changes, see if your email can now schedule as expected.
Contact lists/segments - make sure you've selected at least one list or segment to send to. If you're narrowing by tag, make sure there's no error for the narrow-list combo to result in 0 contacts being able to be sent to.
For instructions on editing these different sections:
Editing the header and footer of emails
Scheduling emails
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