Avoid simultaneous sending of multiple invitations through different channels when you have both the email address and mobile phone number of a contact

When both SMS and email options are checked in a campaign, the review request is sent simultaneously via SMS and email if we have both pieces of information for the same contact, which could be perceived as overbearing or even a form of harassment.

I think it would be interesting to be able to program the following workflow:

1. You only have an email 👉 send an email

2. You only have a mobile phone number 👉 send an SMS

3. But if you have both 👉 First send an email, then wait for x days, then maybe send another email, wait for x more days, and if you haven't seen a click on the link, then send an SMS, for example.

Of course, additional rules could be added regarding future channels, starting with WhatsApp.