What makes an email accessible?

An accessible email can be read by everyone on the list: images carry alt text a screen reader can say, text has enough contrast and is large enough to read, every link and button goes somewhere, and the design still works in dark mode and on a phone.

How do I check an email for accessibility in Postcards?

Open the health bar at the top right of the editor. It lists images with no alt text, invalid or placeholder links, and accessibility issues, and Highlight jumps straight to each one so you can fix it where it is.

What does the Accessibility Issues check count?

Text that is too pale for its background, and type smaller than 14 px. It is a measured check rather than AI, so it gives the same answer every time and shows whether a fix has worked.

Why does alt text matter in email?

A screen reader reads alt text aloud in place of the image; without it, it may read the file name instead. Outlook also shows alt text while it blocks images, so a few plain words keep the email making sense either way.

Can AI fix accessibility issues?

Yes. Visual Insights with AI reviews the design and points to each issue, and you can ask AI Suite to raise contrast, enlarge type or write alt text for one section or the whole email. AI Suite is included on every paid plan.

How do I make an email work in dark mode?

Preview it in Quick Preview's dark mode and choose a client: some keep your colours, others invert them. Recolour anything that disappears, and switch on Force Light Mode for the clients that honour it, such as Apple Mail and the Gmail apps. Outlook still inverts, so the design itself has to hold up.

Does Postcards make my emails WCAG compliant?

No tool can guarantee compliance on its own. Postcards catches the common, measurable problems, from missing alt text to low contrast and small type, so they are fixed before you send. For full conformance, also review your emails with the people and assistive technology they are meant for.

Email Accessibility

Emails Everyone Can Read, Checked Before You Send

Postcards finds the images with no alt text, the text too pale or too small to read, and the links that go nowhere. Jump straight to each one, fix it with a colour already in your design, and watch the count drop to zero.

Check Your Next Email

Watch How

Alt text for every image
Contrast and small type
Broken and placeholder links
Dark mode preview
Phone-only font sizes
AI design review

What the accessibility checks catch

Most accessibility problems in email are small and easy to miss: a badge with no description, a label one shade too light, a button nobody linked. Postcards finds them while the email is still open.

Images with no alt text

Without alt text, a screen reader may read out the file name instead, and Outlook shows alt text in place of the images it blocks. The health bar lists every image that has none, so each one gets a few plain words.

Watch how
Text too pale or too small

Accessibility Issues counts text too pale for its background and type under 14 px. It’s a measured check, not AI, so it gives the same answer every time and tells you when a fix has worked.

Watch how
Links that go nowhere

Invalid Links finds buttons with no link and placeholder links left over from a template. A reader who taps a button and lands nowhere has been let down.

Watch how
Dark mode that hides things

Some inboxes invert an email’s colours, and dark icons vanish on a footer that turns dark. Preview dark mode client by client, recolour what disappears, and force light mode where it’s honoured.

Watch how
Text too small on a phone

Set font sizes for phones only, keep short rows together instead of stacking them, and hide a long paragraph on mobile while desktop stays as it was.

Watch how
What a rule can’t see

Visual Insights with AI reads the design the way a person does and points to each issue. It changes nothing until you ask, and then one prompt can raise contrast, enlarge type or write alt text.

Watch how

From missing alt text to dark mode, in four short videos.

Watch real emails get checked and fixed: alt text and contrast in the health bar, an AI review with a measured counter, dark mode, and phone layouts.
Watch the Walkthroughs

Check an email’s accessibility in three steps

No plugin, no export to a separate checker. The health bar sits in the editor, so you fix each problem in the same place you find it.

1

Open the health bar

The thin strip at the top right of the editor. Its panel lists missing alt text, invalid links, accessibility issues and the email’s size against Gmail’s 102 KB limit.
2

Jump to each issue and fix it

Highlight takes you straight to the image, link or text a check found. Write the alt text, add the link, or pick a darker colour off the design with the pipette.
3

Confirm, then preview

The counts drop as you fix. Then check the email in Quick Preview’s dark mode and phone view before you export.

A measured check, and an AI review on top

Use the AI to find and fix, and the counter to confirm. Each catches what the other can’t.

The health bar measures

Missing alt text, invalid links, pale text and type under 14 px are counted by rule, not judged. Run it twice and you get the same number, which is how you know a fix actually worked.
AI Suite reviews

Visual Insights with AI reads the layout like a person and flags what no rule can. Ask it to “improve accessibility: higher contrast, larger fonts, descriptive alt text” and a narrow, specific prompt keeps the edit to what you name.

Explore the full AI Suite →

For teams that email everyone

When your list is a whole community, some of it uses a screen reader, a phone with large text or an inbox in dark mode. These teams can’t pick their readers.

Government

Public notices that reach every resident, whatever they read with. Email for government →
Education

Emails students, parents and staff can all comfortably read. Email for educators →
Nonprofits

Campaigns that leave no part of your list behind. Email for nonprofits →

Email Accessibility Questions

What makes an email accessible?

An accessible email can be read by everyone on the list: images carry alt text a screen reader can say, text has enough contrast and is large enough to read, every link and button goes somewhere, and the design still works in dark mode and on a phone.
How do I check an email for accessibility in Postcards?

Open the health bar at the top right of the editor. It lists images with no alt text, invalid or placeholder links, and accessibility issues, and Highlight jumps straight to each one so you can fix it where it is.
What does the Accessibility Issues check count?

Text that is too pale for its background, and type smaller than 14 px. It is a measured check rather than AI, so it gives the same answer every time and shows whether a fix has worked.
Why does alt text matter in email?

A screen reader reads alt text aloud in place of the image; without it, it may read the file name instead. Outlook also shows alt text while it blocks images, so a few plain words keep the email making sense either way.
Can AI fix accessibility issues?

Yes. Visual Insights with AI reviews the design and points to each issue, and you can ask AI Suite to raise contrast, enlarge type or write alt text for one section or the whole email. AI Suite is included on every paid plan.
How do I make an email work in dark mode?

Preview it in Quick Preview's dark mode and choose a client: some keep your colours, others invert them. Recolour anything that disappears, and switch on Force Light Mode for the clients that honour it, such as Apple Mail and the Gmail apps. Outlook still inverts, so the design itself has to hold up.
Does Postcards make my emails WCAG compliant?

No tool can guarantee compliance on its own. Postcards catches the common, measurable problems, from missing alt text to low contrast and small type, so they are fixed before you send. For full conformance, also review your emails with the people and assistive technology they are meant for.