Was sending out emails to ~200 verified contacts yesterday when all of a sudden saw that my bounce rate was 30% for the campaign. Emails were being blocked/rejected. Checked with my email sequencer (pipl) and inbox provider (zapmail). Told me that ESPs were blocking my emails. Never faced this issue before. So, are all my domains burnt? Time to find new ones?

At cold.email this is our current stack that we get good results with. Findymail.com, and Wiza for email finding and validation with 95% deliverability. Porkbun for domains for Sending Infrastructure Inboxkit for MS and Gmail inboxes Clay + 4.1 nano for Copywriting Instantly.ai for Warmup and Sending ONLY Python + Serper.dev + AI Web Researcher in Clay for list building and validation Icypeas dataset for list building. Custom APIs in house