Email Header Size - The Perfect Dimensions for Every Campaign

When designing newsletters, the email headers can make or break engagement. This article discusses the benefits and the best email header sizes for different screen sizes. We will also discuss CapCut for making eye-catching email headers.

Email header size
CapCut
CapCut
Nov 17, 2025
8 min(s)

Choosing the right email header size is vital for creating visually appealing, high-performing campaigns. This article discusses the benefits and the ideal email header image sizes for Desktop and mobile. We will finish off the article with expert strategies and instructions for uploading an email banner header. CapCut stands out as the best tool for creating appealing email headers, with impressive editing features, including email header editing tools and a variety of AI tools like inpaint, expand, remove, and upscale, to help you make high-quality, visually appealing email headers.

Table of content
  1. Why does the email header image size matter
  2. The ideal email header sizes
  3. CapCut AI design: Create attractive email headers with ease
  4. Expert strategies for making attractive email headers
  5. How to upload an email banner header
  6. Conclusion
  7. FAQs

Why does the email header image size matter

  • Ensures proper display across all devices: Selecting the right email header size ensures your design looks attractive on desktop and mobile devices. It prevents images from appearing misaligned or cut off, keeping a professional appearance across different platforms.
  • Speeds up the loading time of your emails: Smaller header sizes reduce the overall file size to allow your files to load faster. Thus, this increases engagement by preventing readers from exiting your email because the content takes too long to load.
  • Ensures great design and brand messaging: The right-sized email header will ensure your brand colors, logo, and messaging are laid out nicely. This provides the readers with an intentional, well-balanced structure that captures their attention right off the bat.
  • Prevents image distortion or cropping: Proper cropping keeps your images sharp and proportionate. This avoids awkward stretching or trimming, which could negatively affect your email's presentation.
  • Gains the customer's trust: A well-designed, well-branded header creates a polished impression. It demonstrates professionalism, helping you build credibility and trust with your audience.

The ideal email header sizes

Choosing the right email header size keeps your designs crisp and professional across all devices. A properly sized header improves readability and keeps your layouts visually balanced. Below, we have listed the recommended dimensions to ensure that your emails look perfect on both mobile and desktop:

For desktop:

  • Width: 650px to 700px
  • Height: 90px to 200px

For mobile:

  • Width: 320px to 385px
  • Height: Around 100px
Ideal email header sizes for desktop and mobile

Following the correct dimensions for email headers is quite essential. However, making appealing email headers is also equally important. CapCut is the best video editor for creating compelling email headers, as discussed in detail below.

CapCut AI design: Create attractive email headers with ease

CapCut is a versatile, all-in-one video editing software, renowned for its powerful editing and AI-powered features. It is also an excellent tool for creating eye-catching email headers, offering AI design and email header templates to help you craft the perfect ones. You can further enhance email headers with a variety of editing and AI-powered features. So, download CapCut today and utilize its advanced editing features to create professional email visuals in minutes.

Key features

  • AI design: Use CapCut's AI design feature to instantly convert your text prompts into attractive email headers.
  • Editing tools: Enhance your email header with a variety of visual elements, like stickers, filters, effects, shapes, frames, and designs, to make it visually appealing.
  • AI tools: Improve your designs with AI-powered tools, such as background remover, inpaint, expand, remove, and upscale.
  • Email header templates: CapCut offers a variety of templates that save time and help you design attractive email headers.
  • Multiple export formats: You can export your email header in various formats, such as JPG and PNG, enhancing flexibility.

Steps to use CapCut for making appealing email headers

    STEP 1
  1. Access the AI design feature

To begin with, open CapCut and click the "AI design" feature from the left-hand panel. After that, write a clear and detailed prompt for your email banner header. Once satisfied, click the "Send" button to generate the email header.

Accessing the AI design feature in CapCut
    STEP 2
  1. Edit and enhance the email header

Once the email header has been generated, click the "+" icon to enhance it with CapCut's editing tools, such as filters, effects, shapes, frames, and designs. You can further improve the design with AI tools, such as inpaint, expand, remove, and upscale, to make it visually appealing.

Editing and enhancing the email header in CapCut
    STEP 3
  1. Export the email header

Once satisfied with the email header, click the "Download" button in the top-right corner of the screen. After that, click the "Download" button to download the email header or "Copy as PNG" to copy it.

Exporting the email header in CapCut

Expert strategies for making attractive email headers

  • Keep the design clean and focused: Avoid clutter by limiting the text and visual elements. A focused header draws the focus to your key message quickly. Use CapCut's layout and spacing to achieve a sleek, professional look.
  • Use high-quality visuals: Crisp and clear images can make your headers more appealing. Meanwhile, blurry or pixelated photos can ruin the first impression. You can use CapCut's filters, effects, and upscaling tool to enhance image quality.
  • Match colors with your brand identity: Select colors that align with your brand palette to create a consistent visual experience. This builds trust and recognition with your viewers. CapCut's AI design feature enables you to choose complementary color schemes effectively.
  • Include readable, engaging text: Use short, bold headlines or taglines that convey your message in a single line. Avoid fancy fonts as they can reduce readability. You can easily add stylized text by using CapCut's fonts and text effects.
  • Add subtle animations or design assets: Small animations and visual effects can make your email header feel more dynamic without distracting readers. So, use the motion wisely to grab the viewer's attention. CapCut offers a variety of visual effects, such as stickers, filters, effects, frames, designs, and animations, for this purpose.

How to upload an email banner header

    STEP 1
  1. Open Gmail and start a new email

To begin with, open the website of an email provider, such as Gmail or Yahoo, and log in to your account. Then, click "Compose" in the top-right corner to open a new message window. This is where you add your email header.

Open Gmail and start a new email
    STEP 2
  1. Click on the image icon

In the image window, click the image icon at the bottom of the toolbar. This will allow you to insert an image directly into your email.

Click on the image icon
    STEP 3
  1. Upload your banner image

Choose "Upload" and select the email header from your computer. For the best results, choose an image that is around 600-700px wide.

Upload your banner image
    STEP 4
  1. Adjust and send your email

Once uploaded, resize the image if required, and set its alignment to center. Write your message below the header and click "Send." Your email banner header will clearly appear at the top.

Adjust and send your email

Conclusion

Selecting the right email header size is crucial for creating interactive, professional-looking campaigns. This article discussed the standard email header size for mobile and Desktop. Following the proper size ensures that your headers display perfectly across devices. To create compelling email headers, remember to follow expert tips: maintain a clear design, use high-quality visuals, and add subtle animations or design assets. CapCut is the best choice for creating high-quality email headers, as it offers features such as AI design, email header templates, editing tools, and a variety of AI tools, including inpaint, expand, remove, and upscale. So, get CapCut now and utilize its advanced editing features to make email headers that strengthen your brand identity.

FAQs

    1
  1. What happens if my email header image size if too large?

If the email header size is too large, it may take longer to load, leading readers to lose interest before the email opens. Oversized photos can also look distorted or cropped on small screens, ruining the layout. Keep the file size optimized for faster loading and better readability. You can use CapCut's cropping tool to resize and compress the email header without losing quality.

    2
  1. How can I make my email header responsive?

To make your email headers responsive, use the dimensions that adapt to both mobile and desktop devices. Select scalable designs and test them across multiple email clients. Use visual effects to make the email header more attractive. CapCut offers a variety of editing tools, including stickers, filters, effects, shapes, frames, and designs, enabling you to create high-quality email headers.

    3
  1. What file formats work best when setting the size of an email header image?

The most recommended formats when setting email header banner sizes are JPG and PNG, as they balance quality and file size effectively. JPG is perfect for photos, while PNG is ideal for logos or transparent backgrounds. Using these formats results in faster, sharper loading across all email clients. CapCut lets you export email headers in both PNG and JPG format, with 8K resolution.

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