Where should a marketing banner go in an email signature?

Usually below the main contact block (or on the right in a compact layout). Keep it visually secondary so it doesn’t overwhelm the signature.

How tall can a marketing banner be?

Keep banner height small so the signature doesn’t become bulky—aim for a compact single banner row with short copy and one clear CTA.

Will a banner always render correctly in Outlook?

Not guaranteed—Outlook can be strict with HTML/CSS. Keep banner markup simple, use straightforward image sizing, and test after pasting.

Should the banner content rotate often?

Rotate infrequently (e.g., monthly or campaign-based). Too much rotation can confuse recipients and hurt consistency.

Marketing Banner Ideas for Email Signatures (Gmail + Outlook)

Add a subtle marketing banner to your signature without making it feel like an ad. Use these ideas and keep them compact, readable, and Outlook-friendly.

Banner ideas that stay professional

Short “Book a call” CTA
Limited-time offer with minimal copy
Team resource promo (e.g., free guide)
“New customer onboarding” link
Upcoming webinar/event reminder

Make the banner Outlook-safe

Keep markup simple and avoid complex CSS.
Use a small banner image and predictable sizing.
Limit text length so it wraps gracefully.
Test after pasting into Outlook and Gmail.

Build it with Signaturely

Generate signature with banner Browse templates

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