Guides
Two how-tos for a cold campaign you have not launched. One is the checklist for the domain, the copy, and the volume. The other shows how to read SPF, DKIM, DMARC, and MX yourself.
Cold email pre-send checklist
Domain authentication, copy, links, sequence length, an opt-out, and volume before a cold campaign launches.
Read the guide
Check SPF, DKIM, and DMARC before you send cold email
What SPF, DKIM, DMARC, and MX are, how to query them with dig or nslookup, and the mistakes that make a record fail.
Read the guide