Email instead of notification on Activity @Mention

These parameters and substitutions are new to me, so I really appreciate your help. Seeing the actual strings for what I need really helps to understand the examples better. Your answers to both my questions 1 and 2 worked well, but I may not have been very clear on question 1.

In my setup let's say I have 3 users, ProfileOwner, MentioningUser, and MentionedUser. Under the Profile for ProfileOwner there is an activity stream where MentioningUser will write a comment and tag MentionedUser. AutoActions already sends out an email notification to MentionedUser letting them know they were mentioned by MentioningUser and now shows the full message (thanks again). What I would love to have in that email is the name of the ProfileOwner and a cb_userfield that belongs to that ProfileOwner. For example:

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MentioningUser mentioned you in a post under (ProfileOwner's FORMATNAME) - (ProfileOwner's [cb_address])

"@Support, OrionHFH Software This is the message that MentioningUser left under the activity stream found on the profile for Profile Owner"

Link to view the notification on the site

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In this example I now have everything working except the two parts in bold. Which is what my question 1 from before was trying to explain.

Yes mentions are enabled. They show up fine on both the front end and in the [cb:parse function="getNotificationTitle" class="var2" length="0" /] of the AutoAction email that is sent. But using [var2_message] in that same AutoAction email it shows something like "(mention:723923) this is a new test"

So in the AutoAction email I see this:
[cb:parse function="getNotificationTitle" class="var2" length="0" /] = @Support, OrionHFH Software this is a new test
[var2_message] = "(mention:723923) this is a new test"

This works fine now since I know how to change the trunc length to 0. I can just use [cb:parse function="getNotificationTitle" class="var2" length="0" /] instead of [var2_message]

In my setup let's say I have 3 users, ProfileOwner, MentioningUser, and MentionedUser. Under the Profile for ProfileOwner there is an activity stream where MentioningUser will write a comment and tag MentionedUser. AutoActions already sends out an email notification to MentionedUser letting them know they were mentioned by MentioningUser and now shows the full message (thanks again). What I would love to have in that email is the name of the ProfileOwner and a cb_userfield that belongs to that ProfileOwner. For example:

Ah, hmm. I'm not sure that'll be entirely doable without PHP and using substitutions alone. Maybe it'd be easier to just link to the activity post directly? That is supported and would probably be easier. So for example "X mentioned you in Y post" with "Y post" being linked to the post? Linking to a post is just a matter of using the following URL.

index.php?option=com_comprofiler&view=pluginclass&plugin=cbactivity&action=activity&id=POST_ID_HERE

Example using substitutions from your current trigger as follows.

index.php?option=com_comprofiler&view=pluginclass&plugin=cbactivity&action=activity&id=[var2_id]

I recommend adding &Itemid=MENU_ID_HERE if you also want it associated with a Joomla menu item.

But using [var2_message] in that same AutoAction email it shows something like "(mention:723923) this is a new test"

Ah, yeah that's working as intended then. That just gives you the raw database stored message of a post. It'll have no processing applied to it. You should only need to use getNotificationTitle.

Thanks, this will work just fine. I appreciate all of your help!