VerifyBIMI

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Yahoo BIMI requirements (overview)

Yahoo-family inboxes can display BIMI logos when authentication is strong and the BIMI record + SVG are valid. If the logo isn’t showing, focus on DMARC enforcement, alignment, and a clean SVG Tiny 1.2 logo.

Start here: DMARC must be enforced (p=quarantine or p=reject). Then validate the SVG and publish default._bimi.

Quick check: Verify DMARC • Check SPF/DKIM

Checklist

DMARC: enforced policy (p=quarantine or p=reject).
Alignment: SPF and/or DKIM should align with the From domain.
BIMI record: default._bimi TXT exists and points to your hosted SVG (and optional VMC).
SVG: SVG Tiny 1.2 compatible, square framing, vector-only.

Common gotchas

Third-party senders: misalignment is common when using multiple ESPs.
SVG has a hidden bitmap: embedded raster images inside the SVG.
Time: provider cache/processing can delay changes.

Next: validate your logo against BIMI SVG requirements and review BIMI DNS record examples.