Skip to main content
The media library is where every image and video you use in Senderz is stored. Upload a file once, then reuse it in any email, popup or brand asset. It lives at Media & Brand in the sidebar, under Content. The page has two tabs:

Media

Your uploaded files. Images, videos and the trash.

Brand

Your brand kit. Logo, colours, fonts, buttons, voice.
Inside the Media tab there are three lists: Images, Videos and Trash.
Brand font files you upload from the Brand tab are stored in the same library, but they do not appear under Images or Videos. If you delete one it does show up in the Trash.

​
Uploading

You can add files three ways, and all three accept several files at once.
1

Open the Images or Videos list

The list you are on decides which file types are accepted.
2

Add your files

Press Upload media, drag files straight onto the grid, or use the Add more tile at the end of the grid.
3

Watch each file upload

Every file gets its own card with a live progress bar. If one fails, that card offers Retry. Dismiss removes it from the queue.
Files that fail the type or size check are skipped with a message telling you how many were skipped and why. The rest still upload.

​
Accepted types and size limits

SVG and AVIF files are not accepted by the uploader. Convert them to PNG or JPG first.

​
Images are optimised on upload

Senderz shrinks images as they arrive, so a heavy photo does not slow down your emails. When a file is made meaningfully smaller you get a confirmation showing the size before and after. What happens:
  • Images wider than 1320 pixels are scaled down to that width. Smaller images are never enlarged.
  • The image is re-encoded and quality is stepped down until the file is around 280 KB, with a floor so quality never collapses.
  • Photos without transparency come out as JPG. Images with real transparency come out as PNG.
  • The file extension in the library changes to match, so banner.webp may become banner.jpg.
  • GIF files are left completely alone, so animation is preserved.
  • If the re-encoded version would not be smaller, your original is kept as it is.
The size shown on the card is the stored size, which is why it is often smaller than the file you picked.

​
Using a file

Each card in the grid has a menu with: An AI badge marks images that were generated with AI rather than uploaded.

​
Placing a video in an email

Videos are not offered in the image picker. To use one in an email, copy its link from the library, then paste it into the Video URL field on a video block. The block’s thumbnail is picked separately, through the normal image picker.

​
The image picker

Anywhere Senderz needs an image, you get the same Select image dialog. You do not have to visit the media library first.
Every image in your library. Search by name, switch between grid and list view, and toggle Show AI-generated images on or off. Images only, so videos and fonts never appear here.
Where the picker appears:
  • Email builder: image blocks, image rows, video block thumbnails, and the template background under Styles.
  • Popups: image elements, side and background images, the popup logo, the teaser image, game prize art and education blocks.
  • Brand kit: your brand logo.
A file chosen through Import URL is not copied into your library. It stays on the other server, so if that link ever breaks, your email or popup breaks with it. Uploading is safer.

​
Generating an image with AI

The Generate tab writes an image from a text description and saves it into your library.
1

Connect your own AI key

Image generation runs on your own AI provider account, set up in Settings under AI provider. If no key is connected the tab tells you so and links you there. See AI provider.
2

Describe the image

Up to 1000 characters. Be specific about subject, style and lighting.
3

Pick an aspect ratio

Square, Portrait or Landscape.
4

Generate, then use it

Regenerate as many times as you like. Press Use this image when you are happy. It is already saved to your library, tagged with the AI badge.
Only OpenAI and Gemini can generate images. If your AI provider is Claude, the tab tells you that provider cannot make images and offers to take you to settings. A custom provider works as long as it is not Anthropic compatible. Everything else in Senderz AI still works on Claude, image generation is the one exception.
Generated images count against your own AI provider bill, not your Senderz plan.

​
Deleting and the trash

Deleting is reversible. A deleted file moves to the Trash list, and each card there shows how many days it has left.
  • Files stay in the trash for 30 days.
  • Restore puts the real file back, not a placeholder. Its link works again exactly as before.
  • After 30 days the file is permanently removed and cannot be recovered.
A file in the trash is no longer served. Any email, template or popup still pointing at that link will show a broken image until you restore it. The delete confirmation says so. Check where a file is used before you delete it.
If you delete the image that is set as your brand logo, the logo is cleared from your brand kit at the same time. Restoring the file does not put it back as the logo, so set it again from the Brand tab. Every delete, restore and permanent removal is written to your workspace audit log with the name of the person who did it.

​
Editing a template never deletes a file

Swapping an image in the email builder, clearing one, or deleting a whole block leaves the original file untouched in your library. The only way a file leaves the library is if someone deletes it from the media library on purpose.

​
How files are served

Files are served from the Senderz asset CDN over a public HTTPS link. Two things follow from that. The link is public. It is long and unguessable, so it will not be found by browsing, but anyone you give it to can open the file without signing in. Do not upload anything you would not be comfortable sharing. The link never changes and is cached permanently. Renaming a file changes its display name only, not its URL. There is no way to replace a file in place, so to change an image you upload the new version and repoint whatever uses it. This is deliberate: it means an email that went out last month keeps showing the image it was sent with.

​
Who can do what

Viewers can browse and copy links but cannot change anything.

​
Limits worth knowing

The grid shows 24 files per page with paging, in newest first order. Search exists inside the image picker, not on the library page itself.
Files are organised only by kind, Images or Videos. Naming files clearly on upload is the practical way to find them later.
Rename and delete act on one file at a time. There is no bulk delete.
Some cards show a Primary badge. There is no control in the product to set or clear it, so treat it as read only for now.
Video cards show a file icon rather than a thumbnail. Use Open in new tab to play one.

Templates

The email builder, where most images end up.

Popup blocks

Images, backgrounds and teasers on your storefront popups.

AI provider

Connect the key that powers AI image generation.

Popups

Build and publish an on-site signup popup.