> For the complete documentation index, see [llms.txt](https://daisychain.gitbook.io/help/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://daisychain.gitbook.io/help/texting/sending-out-mms-messages.md).

# Sending out MMS messages

### **What is an MMS?**

MMS stands for "Multimedia Messaging Service," and it is used to send more complicated messages than SMS messages. MMS messages in Daisychain can include images, videos, and/or up to 1,600 characters of text.

### **How do I send out an MMS message?**

There are two ways to send MMS messages in Daisychain:

#### **Adding several SMS segments worth of text**

If you send a long text in Daisychain which uses multiple SMS segments, we will automatically convert that message to an MMS if it is more cost-effective for you.

#### **Adding Pictures or Videos**

In the message composition window, click the image icon and select your image or video file.

<figure><img src="/files/oJo4F3ZaiYtscGbovZlV" alt=""><figcaption></figcaption></figure>

When you select a video, Daisychain automatically compresses it so it can be delivered as an MMS — you'll see a brief "Compressing video…" indicator, and then the video attaches to your message just like an image.

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### Other questions

#### **How big can my image file be?**

Your image file should be 500kb or less. If you need to resize your image, you can try using an online tool like [Image Resizer](https://imageresizer.com/).

#### **What dimensions should I use?**

In order to keep the file size small and the image easily viewable on a mobile phone, we generally recommend:

* Make your images square
* Making your image no more than 500px wide

#### **What about videos?**

Your video can be up to **30 seconds** long and up to **150MB** in size, in any common video format. You don't need to compress or resize it yourself — Daisychain automatically converts your video into a format and size that mobile carriers can deliver.

Because MMS messages have strict size limits set by carriers, the delivered video will be significantly compressed. Short, simple clips (a person speaking directly to the camera, for example) hold up best; fine text and fast motion may look blurry after compression.

#### **Any other tips?**

* **Don't Use Transparent Backgrounds:** These can appear as solid, randomly-colored backgrounds in the message thread, causing the image to look different than intended.
* **Consider using Charms and GIFs:** engaging, personalized content may get a better response than just text or a stock photo.
* **Use High Color Contrast:** Make sure the foreground and background colors are clearly different to prevent the image from appearing blurry or monochromatic.
* **Don't Use Borders:** On some iOS devices, borders may be displayed off-center.