TacoCode

Nexus Merchants

Customer Portal for Stripe provides shortcodes which allows the currently signed-in user to 
manage their Stripe subscriptions, see their invoices & manage their cards:
<ul>
<li>
<code>[cpfs_list_subscriptions allow-cancel="true"]</code> 
Lists up to 10 Stripe subscriptions. The default value for<code>allow-cancel</code> is <code>false</code>. 
To allow a user to cancel their subscriptions, set <code>allow-cancel="true"</code>.
</li>
<li>
<code>[cpfs_list_invoices]</code> 
Lists up to 10 Stripe invoices.
</li>
<li>
<code>[cpfs_list_cards]</code> 
Lists up to 10 credit cards stored at Stripe.
</li>
<li>
<code>[cpfs_add_card]</code> 
Allows a user to add a new card. The newly added card will be set as default.
</li>
</ul>
<h4>Notes:</h4>
<ul>
<li>
On first visit of any page containing a <code>cpfs_*</code> shortcode, the currently signed-in user will be looked up 
in Stripe using the user’s email address. If not matching customer is found, a customer will be created.
</li>
<li>
If needed, an administrator can manually link a Stripe customer ID to a user by editing the affected user profile 
in WP Admin and updating the <code>Stripe Customer ID</code> field.
</li>
<li>
If an administrator updates the email address of any user in WP Admin, the Stripe customer email will be updated as 
well (or created if the customer doesn’t exist).
</li>
<li>
If a user updates their email address in WordPress, their email will not be updated in Stripe.
</li>
<li>
Responses from Stripe are being cached for 15 minutes to avoid excessive API calls.
</li>
</ul>

Customer Portal for Stripe

Provides shortcodes for Stripe Invoices, Subscriptions & Cards.

jacopointercom

Intercom

<a href="https://www.intercom.com/" rel="nofollow ugc">Intercom</a> is a next-generation customer communications platform that combines powerful live chat, proactive messaging, and advanced AI solutions — like our Fin AI chatbot — to help businesses instantly connect with customers.
By installing the Intercom WordPress plugin, you can seamlessly add the Messenger to your site, track both logged-in users and visitors, and engage them right away. With Intercom’s industry-leading AI at your fingertips, you’ll deliver fast, personalized support and drive growth more effectively than ever before.

I've installed Intercom at two sites now using this plugin, and have found it to work quite smoothly, though customizing the "launcher" beyond shape and color requires working with the javascript API, which is not currently facilitated by the plugin.

Worked smoothly at two sites

Got it working in under two minutes, does what it should do.

Great product with matching plugin.

Official Intercom WordPress plugin: Engage visitors in real time, power growth with AI, and convert leads into loyal customers.

Customer Portal for Stripe vs Intercom