I personally wouldn't sent the 5000 emails on one day anyway. But that is a totally different topic.
As eduardocosta said, Limesurvey expects intivations to be sent from one SMTP account. If you want to send from various accounts, you need to find a work around or a new smtp server that allows you to send more than 1000 emails per day.
As eduardocosta said, Limesurvey expects intivations to be sent from one SMTP account. If you want to send from various accounts, you need to find a work around or a new smtp server that allows you to send more than 1000 emails per day.
