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Creating Accessible Emails using MS Outlook (Win/Mac)

This document is available in alternate formats upon request. Please contact the Accessibility Coordinator.

Why make emails accessible?

Email is one of the most important forms of communication to many of us in the Queen’s community. Email is fast, efficient, and creates a record of the communication. Like documents, accessible email communications ensures that they are usable by the widest range of users. This is important because, perhaps unknown to you, an email recipient may be a person with a disability who uses assistive technology such as a screen reader which reads aloud information on the screen such as text or image descriptions provided through alternative text (Alt Text).

Which Format to Use?

When composing a new email message, there are 3 formats to choose from:

  1. Plain text email will suffice for most small, routine correspondence. The advantages of plain text are that it can be read by any email program, is compatible with all email systems, and is compatible with all assistive technologies. Limitations of plain text are that you cannot apply document structure and the links are limited to full URLs.
  2. Rich text allows you to add formatting to your text. You can make text bold, add underlines, and insert links. Rich text does not allow you to add “semantic structure,” such as headings, which helps those using assistive technology screen readers in handling long, complicated documents. If you create a heading using bold text, a screen reader user will not know that the text is meant to be a heading. Also, rich text is not displayed the same in all email applications.
  3. HTML email is a good choice when you wish to add more formatting and structure to a message. HTML supports semantic headings, images with alternative text, links, and lists. When your emails contain any of these features, HTML is the format to use.


The 3 format types H T M L, Plain, and Rich Text under the format text tab.

Since HTML supports semantic headings, images with alternative text, links, and lists it is the best format for ensuring the creation of accessible emails. Set HTML as the default email setting. Choose FILE >> OPTIONS, Under Compose messages, in the Compose messages in this format list, click HTML. Click OK to accept your changes, and close.

Set H T M L as the default for composing messages

Appropriate Font Style and Size

San serif versus serif font. shows how serifs can cause issues

Just as with accessible Word documents sans serif fonts work best such as Arial, Helvetica or Verdana. Use 12 point or larger.

  • San-serif fonts are more legible and will benefit more users from the outset, especially those with low vision. In general, sans serif fonts display better on computers and mobile devices.
  • Avoid using serif or script base fonts as these may be difficult to read and cause eye strain.
  • Try to use large font sizes. Avoid font sizes smaller than 9pt as they are difficult to read.
  • Avoid italics and underlining text other than hyperlinks.

Appropriate Use of Colour

When using colour, you must make sure that any information conveyed with colour is also conveyed in black and white. For example, if you’re using colour to identify key words in a document, make sure that you also make them stand out in another way (for example, by putting them in bold).


While Outlook gives the option of changing the color or even placing a picture behind text (e.g. stationary), it is recommended to keep the background white. Any shading in the background can make email difficult to read.

If a background color is included, please ensure that the contrast with the accompanied text is appropriate. List of Colour Contrast Testers.

Colour Contrast

You must provide high colour contrast to the text in your document. A good example of high colour contrast is black and white; while an example of poor colour contrast is light yellow and white.

Providing Structure

Styles are formatting instructions automatically programmed into most MS Office applications including Outlook. You can follow the guidelines for Creating Accessible Word Documents (Win/Mac).Styles are used in lieu of the buttons on the toolbar (for example, the “Bold” button, or the “Bullets” button). Use them to create:

  • Titles (using the “Title” style)
  • Headings (using one of nine “Heading” styles)
  • Subtitles (using the “Subtitle” style)
  • Bulleted Lists (using one of five different “List Bullet” styles)
  • Numbered Lists (using one of five different “List Number” styles)
  • Words in italics (using the “Emphasis” style)
  • Words in bold (using the “Strong” style)
  • Underlined words (using the “Subtle Reference” style)


Headings are a type of Style which makes it easier for various adaptive technologies to navigate a document. Many people do not create Headings correctly, either making font sizes bigger or in bold rather than using the formats already provided by Outlook. By using Headings, you are creating a real structure in your document which will be correctly read by assistive technology and will make the page more usable for everyone. While composing an email you can access the Style section under the FORMAT TEXT tab.

Using the Styles Ribbon under the format text tab when composing emails.

Alternative Text

Any pictures, graphs or text boxes within a document must be given alternative text. Alternative text must give an accurate description of what the item is, so that the user’s assistive technology may convey what information is demonstrated by the item. It is a best practice to avoid using text boxes as they may be inaccessible by screen readers.

  1. Inset the image by choosing the INSERT tab
  2. Select the image and right click inside the image. A menu will appear.
  3. Select Format Picture. This open up the Format Picture panel on the right-hand side.
  4. Select the Layout and Properties button.
  5. Type the description in the area provided.

adding alternat text to an image.

How to Create Good Alternate Text

  • Consider the content and function of your image.
  • If it provides content to your document, make sure that the information the image provides is described in the alt text.
  • If your image only provides a function (for example, providing a portrait of a historical figure described in the text) you need only describe the image. In the case that the image is of a historical figure, write his/her name as the alt text.
  • Try not to use “Image of...” or “Graphic of...” as alt text. That is usually evident to the person reading the alt text.
  • Do not repeat the information which is contained in the document itself into the alt text. If it's already in the document, that should be enough.

Wrapping Style of Non-Text Elements

To ensure the accessibility of non-text elements, the “wrapping style” should be set as In line with text.

  1. Select the image/text box and right click inside the image. A menu will appear.
  2. Select Wrap Text
  3. Select In line with text

screenshot of selecting "in Line with Text" to ensure proper wrapping style


Use the Microsoft tool to create tables. If you use the “Draw Table” tool, it will be difficult for your table to be read by assistive learning technology.

Inserting a Table

  1. Click on Insert in the toolbar.
  2. Select Tables.
  3. Select the number of columns and rows you want and click OK.

adding a table in Outlook

Table Headings

  1. Click anywhere in the table.
  2. Go to the Design tab at the top of the page.
  3. Check the Header Row check box.
  4. Type (or retype) your column headings.
  5. Press the Enter key.


To link your document to a website or another document, you may use hyperlinks. When doing so, make sure that the Hyperlink has context and describes where it leads. It should not just read “click here”, and should make it clear what the destination of the link is (example, the web link www.queensu.ca should be written as "Queen's University").

Inserting a Hyperlink in Outlook

  1. Highlight the text you wish to be the link.
  2. Click on Insert in the toolbar.
  3. Select Hyperlink from the Links box. A new window will pop up.
  4. You can hyperlink to a web site, place in this document, or an email address. Select the type of link you want, enter the information then select OK.

inseting a hyperlink into an email.

Signatures and vCards

Accessibility Tip: "Do not use vCards:"

Some Outlook users like to use vCards, or electronic business cards, as their signatures. Screen readers cannot read the information on a vCard and therefore they are considered inaccessible.

Signatures in Outlook provide a way to add name and contact information to emails the same way every time without re-typing.

Steps for adding Signatures:

  1. Go to the INSERT tab, choose Signature, then Signatures
  2. Select New
  3. Give Signature a name, then click OK
  4. Type in Signature information, then click OK

adding a signature to an email.


All email attachments need to be accessible. Making other documents accessible are covered by the Accessibility Hub “How-to” section. If for some reason you must send an inaccessible attachment, you must make sure that the body of your email includes all of the information that is included in the attachment.

Using MS Office’s Accessibility Checker

Outlook for Mac 2016 comes with a new accessibility checker that can aid in checking for problems in your document. This tool makes it easy to identify problems in your document, and explains what needs to be fixed.

Outlook for Mac

  1. Select Options
  2. Then Check Accessibility

accessibility checker in Outlook for Mac

External Resources

An inclusive Office 365