Description

Viper is a responsive email template that structures newsletters and announcements for apps and businesses from modular blocks you can edit in a visual builder, automatically adapting the layout to mobile, tablet, and desktop screens. Aimed at anyone promoting an app or service by email, it lets you combine presentation sections, feature areas, and call-to-action buttons into a single message with a consistent visual identity.

Key Features of Viper

  • Responsive layout
    Rearranges columns and images for comfortable reading on phones, tablets, and desktops.
  • Modular block structure
    Splits the email into independent sections that can be reordered, duplicated, or removed.
  • Visual builder editing
    Lets you change text, images, colors, and links without touching the HTML code directly.
  • App-focused sections
    Includes areas for showcasing an app’s screens, features, and advantages.
  • Corporate look
    Organizes institutional and commercial content with a clear hierarchy among headings, text, and buttons.

Benefits of Viper

  • Campaigns ready faster
    Starts from a pre-designed base and cuts the time it takes to build each send.
  • Mobile reading without breakage
    Keeps the message legible for anyone who opens the email on a smartphone.
  • Visual consistency across sends
    Reuses the same blocks to keep your brand recognizable across all communications.
  • Less reliance on code
    Lets you adjust content without needing a developer for every campaign.

Who Is Viper For?

  • Anyone launching or updating an app who wants to announce news to their subscriber base.
  • Marketing teams that frequently send newsletters and corporate announcements.
  • Agencies and designers who need an editable base to deliver email campaigns to clients.

How to Download Viper

Viper is available for download here at Ultrapack. Step-by-step instructions for using this file are in the How to install tab, next to the description.

Viper organizes email communication into reusable sections, making it easy to repeat the same structure across launches, product updates, and recurring newsletters. The combination of modular blocks, visual editing, and a layout that adapts to any screen keeps each send aligned with the brand’s identity and readable in the inbox, whether on a phone or a computer, without rebuilding the email from scratch for every campaign.

Frequently asked questions

Is Viper – Responsive APP Business Email + Builder GPL?

Yes. Viper – Responsive APP Business Email + Builder is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.

Can I use Viper – Responsive APP Business Email + Builder on more than one site?

Yes. You can install Viper – Responsive APP Business Email + Builder on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.

How much does Viper – Responsive APP Business Email + Builder cost at Ultrapack?

Viper – Responsive APP Business Email + Builder costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$17/mo (Desenvolvedor I).

Does Viper – Responsive APP Business Email + Builder include updates?

Yes. The current version of Viper – Responsive APP Business Email + Builder is 2.0, published at Ultrapack on Oct 13, 2026. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).

Is Viper – Responsive APP Business Email + Builder scanned before publication?

Yes. Every version of Viper – Responsive APP Business Email + Builder goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.