SPF, DKIM and DMARC sound like robot names, but they answer three human questions every mailbox provider asks about your email: who may send for this domain, is the message untouched, and what should happen if either check fails.

The trio, minus jargon

• SPF: a public list of servers allowed to send as your domain. Strangers get flagged.
• DKIM: a tamper-proof wax seal on each message, proving it was not altered in transit.
• DMARC: the referee — tells receivers what to do when SPF or DKIM fail, and reports back to you.

Why cold senders should care

Big providers increasingly expect all three before trusting bulk mail. Missing records do not always block delivery outright, but they stack the odds against you — especially for outreach from a younger domain. Setting them up is a one-time DNS task your IT contact or registrar can handle in an afternoon.

Authentication is the floor, not the ceiling

Once your records are right, deliverability still depends on what you send and to whom. Verified addresses matter as much as signed ones: IDMA SaaS includes an Email Verifier so authenticated domains are not wasted on dead inboxes.

Check yours today

Search your domain's DNS for SPF, DKIM and DMARC records — if any are missing, fix that first. Then build on solid ground at idmasaas.com/register, free forever, no credit card. Invite your team or partners to audit their domains too, and WhatsApp +27 68 597 7514 with questions.