Email Client
|
HTML Support
|
Known Errors
|
| AOL 4.0 and 5.0 |
No |
- Text only
- Forms are stripped
|
| AOL 6.0, 7.0, and 8.0 |
Yes |
- Standard HTML
- Forms are stripped
- Rejects email linking to external style sheets
|
| AOL 9.0 |
Partial |
- Disabled HTML images and hotlinks
- Forms are stripped
- Lengthy emails can be turned into .zip files
|
| AOL Webmail |
Partial |
- Doesn’t fully support XHTML compliance
- Strips <br /> tags
- Anchor tags not supported -Rather than jumping to the anchored section of the email when clicking anchor tag, a new inbox window opens.
|
| Apple Mail |
Yes |
- Standard HTML
- Font tags not permissible – to be replaced with <span> tags
- Must click anchor links twice for them to function properly
- In El Capitan OSX, anchor links do not work at all.
|
| Compuserve |
No |
|
| Comcast Smartzone |
Yes |
- Standard HTML
- Background images are blocked.
- Anchor tags not supported -Rather than jumping to the anchored section of the email when clicking anchor tag, a new inbox window opens.
|
| Comcast XFinity |
|
- Cuts down long newsletters – use webpage version or shorten the email.
- When clicking anchor or table of contents links rather than jumping to the anchored section of the email, a new inbox window opens.
|
| Entourage (Mac) |
Yes |
|
| Entourage 2008
(Mac) |
Partial |
- Background images may be blocked.
- Supporting forms, Flash or other plug-ins, CSS floats, CSS positioning, and animated GIF’s
- Bullet points are replaced with images in ordered lists
|
| Earthlink |
Partial |
- On occasion text is underlined
|
| Eudora 3.1 |
No |
|
| Eudora 4.0, 4.2, 4.3,
and 5.0 |
No |
- Standard HTML supported when Internet Explorer is used.
- Poor HTML support in default Eudora HTML viewer
|
| Gmail |
Partial |
- Bookmark anchors not supported.
- Cuts down long newsletters – use webpage version or shorten the email.
- Hyperlinks phone numbers in emails
|
| Hotmail |
Partial |
- Blocks images by default
- Strips <head>, <title>, <meta>, and <body> tags – must use inline styles
- Disables hot links after ~4 mins. and strips background images – need to turn on authentication
- CSS Issues
- Text may appear underlined
- Extra spaces added between lines of text surrounded by <p> tags – Need to change <p>tags to <div> tags in block’s Code View or create a new block and recreate the text without copy/paste styles
|
| Juno 4.0, and 5.0 |
Yes |
- Nearly standard HTML
- CSS issues
|
| Lotus Notes 4.6 |
No |
|
| Lotus Notes 5.0 |
Yes |
- Nearly standard HTML
- CSS issues
|
| Novell GroupWise 5.5 |
Yes |
|
| Office 365 |
Partial |
- Standard HTML
- Images are blocked by default
- CSS issues
- Anchor links and table of contents don’t function.
- Images are often displayed as the size of the original file that was saved in the library, consequently causing misinterpretation – must resize the image in the library and then reinsert it.
|
| Outlook 97 |
Partial |
- No font or link colors
- Alignment issues
|
| Outlook 98 and 2000 |
Yes |
- Standard HTML
- Doesn’t fully support CSS
|
| Outlook 98 and 2001
(Mac) |
No |
|
| Outlook 2003 |
Partial |
- HTML images blocked by default.
|
| Outlook 2007 and 2010 |
Partial |
- Forms, Flash, or other plug-ins, CSS floats, CSS positioning, animated GIF’s are not supported.
- Bullet points are replaced with images in ordered lists
- Page breaks are inserted into extended emails that may cause gaps
- Does not support Image borders.
- Hi-def display greater than 1920px by 1080px formats the text but doesn’t format the images.
- Image caption styles get overwritten by Outlook style
- Images greater than 1728 px in height are cut
- Adds extra spaces between paragraphs or double spaces text
- Based on computer display setting, the images may appear misshapen.
Note: Microsoft has set up a tool to validate your HTML for Outlook 2007. |
| Outlook 2007 and 2010
(Mac) |
Partial |
- Anchor links or table of contents links are not supported.
- Animated GIF’s not supported.
|
| Outlook 2013 and 2016 |
Partial |
- Page breaks are inserted into extended emails that may cause gaps
- If the last text in a block is a bullet, it will add an empty bullet point – either don’t end the block text with a bullet point or add <div style=”display:none;”> </div> before the closing </ul> tag in the block’s Code View
- Hi-def display greater than 1920 px by 1080 px scales the text but doesn’t scale the images
- Based on computer display setting, the images may appear misshapen.
- Animated GIF’s not supported.
|
| Outlook 2016 (Mac) |
Partial |
- Anchor links or table of contents links not supported.
|
| Outlook 365 |
Partial |
- Link color defaults to blue unless the preceding text is formatted with a color – need to wrap link in <span> tags and <td> and <div>tags must have different text color
- When clicking anchor or table of contents links rather than jumping to the anchored section of the email, a blank window opens
- The text is justified by default, even if left-aligned in the email
- Image padding is stripped out
|
| Outlook Web Access |
Partial |
- Standard HTML
- Images are blocked by default
- Anchor links and table of contents links are not functional.
- Images are often displayed as the size of the original file that was saved in the library, consequently causing misinterpretation – must resize the image in the library and then reinsert it.
|
| Outlook Express –
PC or Mac |
Yes |
|
| Pegasus Mail 3.1 –
Windows |
Yes |
- Standard HTML
- Link colors not supported
|
| Smartphones Android, iPhone, etc. |
Yes |
- Phone numbers may appear hyperlinked (click-to-call)
- Dates may be added as an event on the phone’s calendar using the physical address from the email’s footer.
|
| Verizon |
Yes |
- Standard HTML
- Anchor links or table of contents links not supported.
|
| Yahoo! |
Yes |
- Standard HTML
- Anchor or table of contents links not supported in all browsers – when clicked, the email closes and prompts the reader to their inbox.
- Cuts down long newsletters – use webpage version or shorten the email.
|
Delivery 
