I just switched from Omnisend to Klaviyo. I thought all was well until I created and sent out my first email campaign.
Out of my list of 2800 subscribers, 2400 of my emails bounced! I checked the activity and they keep bouncing. I know these are good emails because they worked with Omnisend and I could see the traffic being brought to my site. I barely had any traffic since 2400 of my emails never went through.
Did I miss a step in set up? How would this happen? ** I did have Klaviyo downloaded and used it for a bit in 2019, but then I switched to Omnisend. Since I decided to switch back, could this have anything to do with it? Help please!!