No relative links

Links defined under the attribute href of the HTML tag <a> cannot be inserted as relative links.

All links must be absolute URLs, starting by http(s)://, or a syntactically correct personalization (${variable}).

It is possible to combine a personalization with a relative path, for instance "${variable}/fe/actito-documentation-client/campaign/en/ACTITO_Documentation.html" (see Setting up links in your emails for more info), but purely relative links are not allowed. Neither are URLs without http(s):// (such as "www.actito.com").

Maximum 255 characters in link title

The HTML attribute title of a link (<a> tag) can only contain a maximum of 255 characters.

The role of the title attribute is to add some additional information to the link, not to provide an exhaustive description. As such, it should be brief, otherwise it will prevent the import of the HTML file.

Missing attachment

As explained in the HTML import modal window, images used in the e-mail can be referenced :

• either by including absolute links (images hosted on a third-party server), in which case uploading an HTML file alone is enough

• either by including a folder containing the images within a zipped file which also contains the HTML file (one per language)

In the second case, images can be inserted with a relative reference (ex. src="folder_Name/Image_name.jpg").

If the HTML references an image that's not in the image folder (or in another folder, or if the name of the image/folder is wrong), you will encounter an "referenced attachment missing" error, with the reference of the missing image.

No relative links

External stylesheet referenced in the HTML tags <link> cannot be referenced as relative links.

All links must be absolute URLs, otherwise the resource will be considered as missing.

CSS rule formatting error

CSS rules found in the <style> tags must be formatted correctly. A CSS rule consists in a selector and a declaration. The selector points toward a HTML element, while the declaration contains the name of the propriety and the associated value (ex.: property: value;).

If a CSS rule is not valid, the invalid token will be highlighted by the Actito validator, and the possible valid notations will be presented.

In the following example, the td at line 21 (of this specific <style> tag ) .root.one-cols>tbody>tr>td>{width:660px} should not be closed and causes an error.

The correct syntax is .root.one-cols>tbody>tr>td{width:660px} .

"Unexpected character" error

An unexpected character in the middle of HTML tags can block the rendering of the e-mail.

An 'unexpected character' can be understood as the following:

• an extra character in the code. For instance, 2 double quotes one after the other can displace the parsing of the e-mail.

• on the contrary, missing quotes can also displace the parsing of the e-mail.

• or other missing characters in the code. If in the fragment href="https://www.actito.com", the sign "=" is missing, the quote just after the href will be considered as unexpected.

This example signals an error because of an invalid character at line 243. The column specifies the position of the character in the line.

We notice that the sign "=" is missing following the href, which means that the link tag is not valid.

Duplicate attribute

A duplicate attribute in an HTML tag can block the rendering of the HTML.

In the following example, we notice that the img tag contains the title attribute twice, which causes an error.