I sent out my first campaign last week - and not only was my open rate about 8% lower than my long-term average on both MailerLite and MailChimp, I also had a much higher number of bounce rates:
Hard bounces2 / 3.39%
Soft bounces46 / 77.966%
Internal bounces11 / 18.644%
What's going on? I couldn't find a support email address to contact you either, so I'm posting here in the hope someone can take a look and get back to me.