boostetonwp

BTW Contact Forms is a plugin that lets you easily create and manage your contact forms (Customer support, quote requests, lead generation, recruitment, appointment scheduling, feedback and reviews, reporting or moderation, partnerships and collaborations, internal support (extranet / intranet)).
No complicated settings, no HTML or CSS code to manage. You simply choose the position and type of fields you want to include in your forms. 
That’s it! 
They then integrate seamlessly into your theme.
When your customers contact you, you receive an email and a message that can be viewed directly from your site’s administration panel. 
No risk of missing a message!
<h3>License</h3>
This plugin is licensed under the GPLv2 or later.

BTW Contact Forms

Create contact forms easily with automatic layout and no code required.

wp.insider

smp7

This addon allows you to customize the content protection message that gets output from the membership plugin.
You will be able to specify your custom messages for different types of protection message.
This addon requires the <a href="https://wordpress.org/plugins/simple-membership/" rel="ugc">Simple Membership Plugin</a>.
After you install this addon, go to the “Custom Message” menu from the admin dashboard to use it.
Read <a href="https://simple-membership-plugin.com/simple-membership-custom-messages-addon/" rel="nofollow ugc">Usage Documentation</a>

Simple Membership Custom Messages

Simple Membership Addon to customize various content protection messages.

BTW Contact Forms vs Simple Membership Custom Messages