Skip to content
SPECIFICTION
Get listed

KingSumo

kingsumo.com

Free plan WebBrowser extension
Visit kingsumo.com
Spec score 8.2 #6 of 16 in Sweepstakes Software

What it is

KingSumo is a web and extension-based giveaway service for growing an email list through giveaways and sweepstakes. Entrants provide an email address and can earn bonus entries through Facebook activity, social-account follows, link clicks, or friend referrals. Giveaways can be shared or embedded on a website, with multiple prizes and winners supported. KingSumo sends entry confirmations and reminder emails, while the organizer selects winners and must contact them separately. Invisible reCAPTCHA checks entries in the background on every plan. The free plan costs nothing and includes unlimited giveaways, bonus entries, GDPR compliance, embedding, reminders, multiple prizes and winners, and basic integrations. The Lifetime Plan costs $49 as a one-time purchase, billed as a single payment, and adds custom branding, Meta Pixel and conversion tracking, custom rules and terms, additional entry fields, and sponsored-entry removal. SendFox works on every plan; Mailchimp, ConvertKit, Klaviyo, and Zapier require the Lifetime Plan.

Spec sheet

Purpose
KingSumo is a giveaway tool for growing an email list through viral giveaways.Read 9 Oct 2026 · kingsumo.com
Security
The privacy policy says the company uses commercially reasonable security measures but cannot guarantee the security of information transmitted to or from the website.Read 9 Oct 2026 · kingsumo.com
Privacy
The privacy policy says KingSumo will not share, sell, rent, or trade personally identifiable information with other parties, while allowing sharing with service providers.Read 9 Oct 2026 · kingsumo.com
Support
KingSumo directs users who need help to email [email protected].Read 9 Oct 2026 · help.kingsumo.com
Email integrations
SendFox works on every plan; Mailchimp, ConvertKit, Klaviyo, and Zapier require the Lifetime Plan.Read 9 Oct 2026 · help.kingsumo.com
Email reminders
KingSumo sends entry confirmations and reminder emails to entrants, but does not email giveaway winners.Read 9 Oct 2026 · help.kingsumo.com
GDPR
The privacy policy includes GDPR terms for EEA residents and links to a Data Processing Agreement.Read 9 Oct 2026 · kingsumo.com
Giveaway entries
Entrants enter with their email address and can earn extra entries through bonus actions.Read 9 Oct 2026 · help.kingsumo.com
Referral campaigns
Referral campaigns are available only to selected accounts, and users can contact support to request access.Read 9 Oct 2026 · help.kingsumo.com
Sharing and embedding
Giveaways can be shared or embedded on a website.Read 9 Oct 2026 · help.kingsumo.com
Spam protection
Invisible reCAPTCHA checks entries in the background and is available on every plan.Read 9 Oct 2026 · help.kingsumo.com
Winner selection
The organizer draws winners; KingSumo does not pick giveaway winners automatically.Read 9 Oct 2026 · help.kingsumo.com
WordPress plugin
The WordPress plugin is retired and no longer receives updates; the maker recommends the web app for new giveaways.Read 9 Oct 2026 · help.kingsumo.com
Zapier connections
KingSumo says Zapier connects it to thousands of other apps on the Lifetime Plan.Read 9 Oct 2026 · help.kingsumo.com

Plans and prices

Free Free Unlimited giveaways · bonus entries · GDPR compliance · embed on any site · auto-reminder emails · multiple prizes/winners · basic integrations; no custom branding, Meta Pixel tracking, conversion tracking, custom rules and terms, additional entry fields, or sponsored-entry removal Read 9 Oct 2026 · kingsumo.com
Lifetime Plan $49, paid once Single Payment Unlimited giveaways · bonus entries · GDPR compliance · embed on any site · auto-reminder emails · multiple prizes/winners · custom branding · Meta Pixel and conversion tracking · custom rules and terms · additional entry fields · remove sponsored entry · advanced integrations Read 9 Oct 2026 · kingsumo.com

Every KingSumo plan and price →

Strong points and limits

Strong points

  • Free plan supports unlimited giveaways
  • Giveaways can be embedded on any site
  • Bonus entries support social and referral actions
  • Invisible reCAPTCHA on every plan
  • Lifetime Plan adds custom branding

Limits

  • Organizers must select winners themselves
  • Winner emails are not sent
  • WordPress plugin is retired
  • Several integrations require Lifetime Plan

Who it suits

It suits marketers and site owners running email-focused giveaways or sweepstakes. Organizers who need referral actions, embedding, and reminder emails can use it without paying, while advanced integrations require the Lifetime Plan.

Verdict

KingSumo covers the core mechanics of list-building giveaways, including bonus entries, embeds, reminders, and multiple winners. Check the free-plan omissions and the need to handle winner selection and notification yourself.

Where Specifiction places it

Alternatives to KingSumoAll alternatives →