HrvatskiBlock 1
Logo and name
Logo on the left or top. Name and role next to it. Small and sharp.
Brand OS Portal
Email signature with logo and banner: how to do it right.
A logo says who you are. A banner says what is new. Here is how to use both without a messy email.
Free: your brand in 3 real designs, in 48 hours.
Put your logo at the top or left of your signature, small and clear. Put a banner below the contact lines, one wide image with one message and one link.
Keep the whole signature light. Host images properly, add alt text and test on phone and desktop. Below are sizes, a layout, rules and a checklist.
By Vedran Obradović · Updated 7 November 2026
A simple layout that works.
Three blocks, top to bottom.
Block 2
Contact lines
Phone, website and one more link. Plain text, easy to tap on a phone.
Block 3
Banner
One wide image, one message and one link. Swap it for launches.
Logo tips for a signature.
- Use a small, sharp logo. If the full logo is too wide, use the short version
- Make the file at about twice the display size, so it is sharp on bright screens
- Keep clear space around it. See logo usage guidelines
- Use the right file for the job. See logo files: what you need
- Add alt text, because many mail apps hide images by default
Free tool
Build the signature, then add your banner.
Type the details, see the signature, copy it. It is free and runs right here.
Banner tips for a signature.
A signature banner is small and quick.
- Make it wide and short, so it does not push the email down
- One message, big words, one link
- Use brand colours and fonts, so it matches the logo
- Do not put key words just in the image. Add the link as text too
- Change it for a launch, a webinar or a hiring push. Take it down after
Signature banner lines
Launch: [Product] is live - see it at [link] Event: Meet us at [event], [city], [date] Content: New guide: [title] Hiring: We are hiring a [role] Call: Talk to me for 15 minutes - [link]
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Keep the signature light.
A heavy signature slows mail and gets blocked.
Gmail allows up to 10,000 characters in a signature and lets you add images, which count toward the limit. Checked on 7 November 2026 on support.google.com. A small logo and one banner fit easily. Five social icons and a long legal text do not.
Many readers see your signature on a phone. Test there. If the banner is cut or the links are too close to tap, simplify. Rules for the text are in email signature rules for companies.
When the whole team needs the same signature.
One person can do it by hand. Twenty cannot.
Read how to roll out email signatures to a team. A brand portal keeps the builder, the logo and the banner maker in one place, so every person makes a signature that matches the rest.
At Deepsea Networks the CEO writes and designs an on-brand LinkedIn post in about 3 minutes. The same idea applies to signatures: the team does it, no designer queue.
Logo and banner signature checklist.
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Make the banner image on brand.
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Straight answers.
How do I add a logo and banner to my email signature?
Add a small logo next to your name and one wide banner below your contact lines. Keep both light and add a link.
What size should a signature logo be?
Small. Make the file at about twice the size you show it, so it stays sharp. The Signature Builder handles this.
Should I put a banner in my email signature?
It helps for launches, events and hiring. Use one message and swap it often.
Do email signature images always show?
No. Many mail apps hide images by default. Add alt text and keep key links as text.
How long can a Gmail signature be?
Up to 10,000 characters, and images count toward that. Checked on 7 November 2026 on support.google.com.
How do I make the same signature for my team?
Use a builder with your brand inside. See Brand OS Portal.
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