These standards apply to all email applications. Not all email clients will have all these options available; just use the options that are available to you.
Note: Most people read their email on a mobile phone. These accessibility guidelines not only help people with disabilities understand your email, but also help sighted users view your email on a small screen.
Emails that are in HTML or Rich Text formatting are the most accessible.
Plain text emails are less accessible.
14 px or 12 pt is considered the most accessible body text size.
Headings should be slightly larger than your body text.
Divide your email into small readable content chunks to make your email easier to understand. Start each content chunk with a heading that summarizes the topic.
Format your headings with Heading Styles 1 through 6.
Don’t include URL’s in the body text. Instead, use text links.
If you need to include a full URL as a citation or research documentation, create a section in your email, sort of like a footnote, and give it a heading (e.g. Citation URL’s). Place all the citations in a bulleted list. Include the page title along with the URL.
Limit your use of Bold, italics, all-caps, etc. Too much will make your text difficult to read.
Don’t use full or right justification, these don’t always align properly in some email clients and may hide your content off screen on mobile devices.
Don’t use tables to layout an email, only use tables for tabular data.