Randomisation of users filtered by a segment for a canvas or campaign

Here the answer from the Braze documentation:

With regards to multivariate testing, Braze determines variant re-eligibility for all campaigns, triggered in-app messages, and Canvases using the following rules:

• When variant percentages are not changed, each user will always enter the same variant of a campaign, triggered in-app message, or Canvas entry every time they are re-eligible.
• If the variant percentages change, users may be redistributed to other variants.
• Control groups will remain consistent if the variant percentage is unchanged, and no users who previously received messages will ever enter the control group on a later send, nor will any user in the control group ever receive a message.

So no, users do not have the option to enter a new variant to re-engage in the canvas or campaign. Antoher article from Braze support:

Thanks for the question. Malcolm_Murray, because I thought Braze randomize the variant for every entry. Now I have to rethink a few of my strategies :D.

Maybe as feedback here MaggieBrennan: It would be great if Braze would have the opportunity to randomize every new entry.

Hey Max ! So I'd love to confirm with Malcolm_Murray , but my understanding was that he was asking for a slightly different question. It sounded like he has a Canvas that lets x users enter each time the Canvas fires, and he's wondering if it'll be the same x people that gets entered each time. Malcolm_Murray  can you confirm? I'm also about to test this right now. 

However, Max your discovery is also a very helpful/interesting one! I believe you have the option of turning on the randomization at the dashboard level by reaching out to Braze. Meaning once you enable the random variant entry for one Canvas, that will apply for every Canvas that you build in Braze. Hope this helps!

Malcolm_Murray I just created 5 test users and launched a Canvas that enters 1 random user each day. I'll let you know about my results in a few days! 🙂

haha I'm like you Malcolm_Murray I'm pretty sure I read random as well and I can't remember where.

You could always stop users from re-entering, which would stop users who have already been through re-entering even if it is random, assuming that's the goal. Off the top of my head, you could also potentially set it up to let certain random bucket numbers in each day, and once all buckets had entered it would go back to the start (untested).

Hey Malcolm_Murray , Braze support can definitely confirm this for you! Please keep us posted on the answer. I think this can also be tested. I'll let you know if I'm able to find out. 

Hi AllanHeo - yes that's right, I'm wanting to confirm if users are entered into a canvas randomly each time a canvas is run. The reason being that I've got some daily API driven canvases that target the same set of users. I use connected content to generate message content, and in some cases this can abort the run for a given user if they don't meet some other criteria on our API. If a user has been sent a message, then they won't be sent the same one again, and we limit the daily sends. Users then become re-eligible to receive after a certain amount of time has passed (time since message sent).

What I'm worried about is that if user entry is not random, then over time we'll basically end up only trying to send to people who cannot receive the message. If it's random then this is less of an issue. I had assumed user entry was random (I was sure I read that somewhere) but now I'm not so sure.

I'm in contact with Braze support about this, but haven't got anywhere yet. I'll update here when I do.

I'd be really interested to hear how your experiment goes.