This is an issue we've run into quite often. Many of Adobe's apps are desktop-forward, with mobile versions that don't yet exist or that are very new/available for iPad. In the case of Adobe Xd, there is no mobile app that someone can learn and play with (there's just one to aid with mobile prototyping). This means that mobile interstitial experiences should be crafted to cater to those on their phones.
For the website, the solution was quite simple: design a mobile version of the website that includes the most important videos. For the emails, however, the default experience might be to 1. click on a link to, say, download a specific UI kit or plugin, then 2. find out that that can't be done from a phone. Additionally, the section of Adobe's website where one downloads Adobe Xd UI kits and plugins just includes a photo and a brief description; it doesn't give the user any sneak peek of what those UI kits or plugins might do.
My hypothesis was that if users don't know what the plugins or kits actually do and can't experiment with them, they are very unlikely to recall them when they're back at their computer using Adobe Xd. I suggested that we include very simple PDFs for those CTAs instead of directing users to the website. The PDFs are minimal: one page saying what the kit or plugin is and another page showing what it looks like and does in the app.
Though not perfect, I believe this fallback experience is infinitely better for newer users than going to the Adobe Xd website and getting lost in a sea of options.