Viral giveaways that grow your email list

Animated demo of a KingSumo giveaway: a visitor enters with name and email, earns bonus entries by following on Instagram and sharing on Facebook as their entry count rises, then copies their referral link for 3 more entries per friend
KingSumo giveaway page for a coffee roaster with a prize image, countdown and email entry form
KingSumo contestant list with entries, referrals and confirmed emails
Bonus entry actions after entering a KingSumo giveaway: referral link, shares, Instagram follow and video
KingSumo winners list with each winner's entries, referrals and entry date
KingSumo email integrations: SendFox, Zapier, Mailchimp, ConvertKit and Klaviyo
KingSumo landing page report with sessions and conversion rate per page

KingSumo

$0
  • Lifetime access
  • Refundable up to 60 days
AppSumo Originals

Created and developed by AppSumo for entrepreneurs everywhere

People enter with their email, then earn extra entries for sharing your giveaway, referring friends and following you. 122,000+ giveaways have run on KingSumo. SweepWidget charges $29 a month, and $119 a month to remove its branding.

TL;DR

  • checkmarkUnlimited giveaways on every plan, even Free. Reviewers went live in 5 to 10 minutes
  • checkmarkBonus entries for referrals, shares, daily visits, and Instagram, YouTube, X and Facebook follows
  • checkmarkPro is $49 once: no KingSumo branding, your logo, Mailchimp, Kit and Klaviyo, Meta Pixel, name and phone fields

At-a-glance

kingsumo.com

Alternative to

Gleam, SweepWidget

Integrations

ConvertKit, Klaviyo, Mailchimp, SendFox, Zapier

Best for

Ecommerce, Marketers, Small businesses

Feel secure in your purchase with AppSumo's 60 day money-back guarantee.

Deal terms & conditions
KingSumo
See KingSumo
🇺🇸Austin, TX, USA

What's new in KingSumo: fewer fake entries, Klaviyo fixed

Hey Sumo-lings, Noah here. KingSumo is still being worked on, and here's what shipped in 2026:

Fewer fake entries

  • Closed a gap that let bots get past reCAPTCHA.
  • Gmail dot tricks and "+tag" aliases (you+1@, you+2@) now count as one person, on every email domain.
  • You can block a whole email domain, not just one address.

Your email tool gets every entrant

  • Klaviyo now syncs entrants again, and retries when Klaviyo is slow or down.
  • Fixed a Klaviyo bug that showed only "None" in the list dropdown.
  • Fixed entrants not syncing to email tools when marketing consent was turned off.

A better giveaway for entrants

  • Entrants now see their referral link on the giveaway page, so they can share it.
  • Fixed bonus entries not showing for people who'd earned a lot of them.
  • Rewrote the entry confirmation email so more people confirm.
  • Name fields are translated in every language.

Faster and safer

  • Winners and entrants pages no longer time out on big giveaways.
  • Logins now verify new devices.

Questions or requests? Ask below. A person on our team answers.

— Noah

Noah Kagan
Chief Sumo

Questions & reviews

AskSumo

Customers appreciate KingSumo, praising its unlimited giveaways, user-friendly interface, and effective lead generation capabilities. Recent updates have addressed issues like fake entries and improved integration with email tools, enhancing the overall experience. While there are still some limitations in customization options and branding in the free version, these are being actively worked on. Weighing the positive feedback against the occasional concerns, KingSumo is a strong choice for those looking to enhance their marketing efforts. With a 60-day money-back guarantee, there's no risk in giving it a try!

AI-powered summary of customer reviews