Deliverability, explained simply

Inbox placement isn't magic — it's authentication, reputation, and list quality. Here's how Sendfable approaches each.

SPF, DKIM, and DMARC

• SPF says which servers may send mail for a domain.
• DKIM cryptographically signs each message so receivers can verify it wasn't altered.
• DMARC tells receivers what to do when SPF/DKIM fail — and Gmail, Yahoo, and others now publish strict policies (p=reject).

Why we rewrite Gmail From addresses

If you verify you@gmail.com as a sender, we cannot honestly send mail that passes Gmail's DMARC when the message originates from Sendfable's servers. So we send as you@send.sendfable.com (our authenticated platform domain), keep your display name, and set Reply-To to your real address. Replies still reach you; the message stays out of spam.

Custom domains (Growth+)

Prefer full brand alignment? Authenticate your own domain with three DKIM CNAME records. Once verified, any From address at that domain sends with proper alignment — no rewrite needed.

List quality & auto-protection

We never allow purchased lists. Campaigns that exceed 5% bounce or 0.1% complaint rates are auto-paused, and the account is flagged. Clean lists beat clever copy every time.