Free tools
DKIM checker
DKIM adds a digital signature to every email you send, so receivers can tell it really came from you. We try the common names automatically; add your selector if your service uses a custom one.
Rather we did it for you?
Run a free scan to see exactly what's missing, or let us set up SPF, DKIM and DMARC for you.
Fix guides: GoDaddy · Namecheap · Cloudflare · Squarespace Domains · Wix · Porkbun · Microsoft 365