Your site visits from mobile devices are likely to continue to rise whether you create a website that works on mobiles or not. But it's how long the person stays on your site and what they do that matters.
If you look at your Google Analytics, you may see mobile visits are up 50% from mobile devices, but look a little deeper and you may find that they don't stay on your site very long and can't access key content.
Worse still, your long donation form or purchase path is likely to be a disaster on a mobile, limiting how many people can actually donate. By not considering mobile, you're actually putting blockers up that will stop you from achieving your commercial goals.
Your first step in understanding what's happening with mobile for your charity is to access your analytics.
So what can you do?
You can 'design for mobile first'. It's a phrase that many people in tech agencies are using now and is common sense. It means you have to design your website for mobile devices, as the priority. Rather than letting your web designer create a stunning interactive masterpiece that fills their Mac screen, aim for the best experience on the smallest device first. Once you have that cracked, then move onto your tablets and finally view it using your desktop. Enhance the experience as the screen gets larger.
Many new sites are dynamic and reshape themselves depending on the size of the screen. In the same way you pour a jelly into different shaped moulds, your site can do this depending on the screen size. This is called responsive design.
There are many sites that have a fixed width and it's down to the visitors to manually resize it to try and make it adequately fit their screen. We need to give the user the best experience no-matter what device.