EMAIL DELIVERY ERROR: the plugin WP Mail SMTP v1.8.0 logged this error during the last time it tried to send an email:
Mailer: Gmail
Host must be a string
Consider running an email test after fixing it.
Having same issue, after update my site won’t send daily Mailchimp updates, also I can’t, Authorize gmail and can’t send test email, however gmail and mailchimp itself can send no problems.
