How to Add Social Media Icons to an Email Signature
Enhance your email signature by adding social media icons. Discover step-by-step instructions to turn every email into a powerful marketing tool.

Ever posted something on Facebook you were really proud of, only to have friends tell you they couldn’t share it? When that share button is missing, you're losing a huge opportunity for organic reach. This guide cuts straight to the chase: we'll show you exactly how to find the setting that's blocking your shares, fix it for existing posts, and set up your account so everything you publish in the future is shareable from the start.
The single biggest reason people can't share your Facebook post comes down to one thing: your audience privacy settings. Every time you create a post, you decide who gets to see it. This choice directly impacts whether the "Share" button appears for other people.
If your post isn't shareable, it's almost certainly because it's not set to "Public." Facebook’s privacy model requires people to be able to see the original content in order for a share to make sense. If your post is locked down, sharing it broadly just isn't possible.
Here’s a quick rundown of the main audience options and what they mean for sharing:
For your brand, business, or public-facing content to have the maximum possible reach, setting your post's audience to Public is essential. That's what makes the share button appear for all viewers, allowing them to become advocates for your content.
Did you already publish something and realize the share button is missing? No problem. You can change the audience setting on any post you've already made. The process varies slightly depending on whether you're on a computer or a mobile device.
This is the easiest way to see all your options at once. Just follow these simple steps:
That's it! Anyone who sees the post can now share it directly to their own timeline, in groups, or via Messenger.
Editing a post's privacy on the go is just as simple using the Facebook app.
Fixing individual posts is great, but isn't it better to set things up so you don't have to worry about it again? By adjusting your default posting privacy, you can ensure every post you create from here on out is immediately shareable. This is especially important for brands and creators who need their content to spread.
Many entrepreneurs and small business owners use their personal profile for business networking. If that’s you, changing your default setting will save you time and headaches.
Important: This change only applies to posts you create from this point forward. It will not retroactively change the privacy of your old posts. You’ll still need to edit those individually if you want to make them shareable.
Good news! All posts made from a Facebook Business Page are public by default. The entire purpose of a business page is to communicate with the public, so Facebook simplifies this for you. You shouldn’t have to worry about post-by-post privacy settings.
However, if you’re certain that content on your page isn’t reaching everyone, double-check that you haven't accidentally set up page-level restrictions. An administrator might have done this long ago. You can find these by going to your Page >, Settings >, Privacy >, Page and tagging. Make sure there are no "Country Restrictions" or "Age Restrictions" in place unless you need them for compliance. These settings can limit visibility in specific regions or to certain age groups, which indirectly hurts shareability.
Making a post technically shareable is just the first step. The next, and more important, goal is to create content that inspires people to hit that share button. People share content virally for specific emotional and psychological reasons. Tap into these, and you'll see your organic reach explode.
Think about the last thing you shared. Why did you do it? People generally share content that:
Understanding how sharing works in Facebook Groups is another piece of the puzzle. The shareability of a post inside a group depends entirely on the group's own privacy settings:
Furthermore, group moderators can disable post sharing within their groups' settings. If you can't share a post in a specific group, it might be due to a rule set by the admin, not your own account settings.
Enabling the share button on your Facebook posts is a simple fix that unlocks your content's potential for organic growth. By setting your audience to "Public," you remove the technical barrier to sharing, both for single posts and all future ones. Combine that with a strategy focused on creating valuable, emotional, and visually appealing content, and you’ll give people a compelling reason to become your biggest advocates.
As social media professionals, we know just how much work goes into creating great content - the last thing you need is a technical glitch sabotaging your efforts. We built Postbase because we were tired of tools that made simple things complicated. Instead of worrying about finicky audience settings or why a scheduled Reel failed to publish, our platform gives you a clean, visual calendar to plan and publish content reliably. It handles video-first formats like Reels and Shorts perfectly, keeping you focused on creativity, not troubleshooting.
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