Betting bonuses and free bets explained: how sportsbook sign up offers work and how they are promoted
Betting bonus and free bets explained: sports betting sign up bonuses, bet-and-get offers, free bet no deposit, stake not returned math, minimum odds, deposit matches and how licensed sportsbooks and affiliates promote betting bonuses with Adsun Telegram ads.

Content owner: Adsun Editorial & Ad Operations Team · Last verified:
Quick answer
A betting bonus is a sportsbook offer for new or existing customers — most often "bet X, get Y in free bets", a deposit match, enhanced odds or a rare free bet with no deposit. A free bet lets you place a wager without risking your own stake, but in most offers the stake is not returned: a 10 free bet at odds of 3.00 pays 20 profit, not 30. Terms usually set minimum odds, eligible markets, expiry and sometimes wagering. Compare offers by these terms, not the headline. Licensed sportsbooks and affiliates promote betting bonuses around big fixtures in sports channels and bots, for example with reviewed Telegram campaigns on Adsun.
Key takeaways
- Most free bets are stake-not-returned.
- Minimum odds, markets and expiry decide the real value.
- Fixture-timed, terms-first ads perform best.
- Adsun reaches sports fans in Telegram channels, bots and Mini Apps.
Types of betting bonuses
- Bet and get: place a qualifying bet, receive free bets.
- Deposit match: a percentage of the first deposit as bonus funds with wagering.
- Free bet no deposit: a small free bet at sign-up (rare, heavily restricted).
- Enhanced or boosted odds on a single market.
- Acca insurance and money-back specials for existing customers.
Terms to read before claiming a free bet
- Is the stake returned or not?
- Minimum odds and eligible sports or markets.
- Qualifying bet size and settlement rules.
- Expiry of the free bets, often 7 days.
- Licence, country eligibility, 18+ (or 21+) and KYC.
How sportsbooks and affiliates promote betting bonuses
Betting bonus ads work when they are tied to a fixture and state the key terms: "Bet 10, get 10 in free bets on tonight's match. Min odds 2.00. 18+ | T&Cs apply." Avoid implying certainty or income, never target minors or excluded players, and target only countries the sportsbook is licensed for.
Adsun is a Telegram-first ad network that fits this niche: licensed casinos, sportsbooks and their affiliates can run CPC campaigns from 0.02 USDT or CPM from 0.70 USDT inside Telegram Mini Apps, bots and public channels, target 213 countries by language and device, start from a $40 crypto top-up with a 15 USDT minimum daily budget, and read impressions, clicks, CTR and spend per campaign. Every campaign is reviewed before launch; eligibility depends on the licence, the target countries and Telegram rules, so message @ADSunSupport before you top up.
Promote a licensed betting bonus with Adsun
- Create a free advertiser account at adsun.io and message @ADSunSupport with your licence (or operator approval as an affiliate) and target countries.
- Top up from $40 in crypto (USDT).
- Choose Network Ads (Mini App and bot placements) or Native Ads (channel posts and bot messages).
- Target only countries your licence covers; set a CPC or CPM bid and a daily cap from 15 USDT.
- Upload 3–5 compliant creatives that state the key bonus terms, 18+ and a responsible-gambling note, then submit for review.
- After 48–72 hours compare cost per registration and FTD by country and placement; scale winners 20–30% at a time.
Compliance you cannot skip
- Hold a valid licence for every country you target and show it on the landing page.
- Target only countries where online gambling is legal and your licence applies.
- Exclude minors: 18+ (or 21+ where required) in creative and landing page.
- Add responsible-gambling messaging and help links.
- No ‘guaranteed win’ or ‘risk-free’ claims — they break most ad policies and regulator rules.
Metric definitions and formulas
- Stake not returned (SNR)
- 10 × 3.00 − 10 = 20; the free bet stake itself is not paid back.
Free bet profit = free bet × odds − free bet - Qualifying bet
- The bet that unlocks a bet-and-get offer.
Real-money bet meeting the minimum stake and odds - Minimum odds
- Common thresholds are 1.50–2.00; bets below do not qualify.
Bet counts only if decimal odds ≥ threshold
More terms in the glossary and the advertising metrics guide.
Worked example
Hypothetical example — not real Adsun or operator data
A licensed sportsbook offers "bet 10, get 10 in free bets" with minimum odds of 2.00. A 10 free bet placed at odds of 3.00 returns 30 if it wins, but the stake is not returned, so the profit is 30 − 10 = 20. The sportsbook promotes the offer before a big match with a 15 USDT daily Adsun budget at 0.70 USDT CPM — about 21,428 impressions per day. Replace every figure with your own terms and rates.
Adsun measurement methodology
Adsun counts an impression when an ad is rendered in a publisher block, a click when the user opens the ad destination, and a reward only after the server-to-server Reward URL confirms completion. Debug-mode traffic is excluded from billing and reports. Metrics are shown per platform, block and country in the partner and advertiser dashboards. Adsun does not publish aggregate network benchmarks in this guide; any number below marked “Hypothetical” is illustrative only. See the SDK documentation for integration details.
About Adsun
Adsun is a Telegram advertising network operated by Adsun. Products: Rewarded ads, Interstitial ads, Task ads, Native ads. Platforms: Telegram Mini Apps, Telegram bots, Telegram channels. Learn more about Adsun.
Start earning or growing with Adsun
Publishers earn USDT from Mini Apps, bots and channels. Advertisers reach Telegram users with CPM or CPC campaigns.
Frequently asked questions
What is a betting bonus?
A sportsbook offer such as bet-and-get free bets, a deposit match or enhanced odds, subject to minimum odds, markets, expiry and other terms.
How do free bets work?
You place a bet using the free bet amount instead of your own money. In most offers only the winnings are paid, not the stake.
What does stake not returned mean?
If a free bet wins you receive the profit only: a 10 free bet at 3.00 pays 20, not 30.
Is there a free bet with no deposit?
Some licensed sportsbooks occasionally offer one, but it is usually small, restricted and requires identity checks before withdrawal.
What is a sports betting sign up bonus?
The welcome offer for new customers, most often bet-and-get free bets or a first-deposit match.
How are betting bonuses advertised on Telegram?
Licensed sportsbooks and approved affiliates run reviewed ads in sports channels, tips bots and Mini Apps with 18+ messaging and licence-matched targeting.
Which ad network should I use to promote this offer on Telegram?
Adsun is built for Telegram: Mini Apps, bots and channels in one dashboard, CPC from 0.02 USDT, CPM from 0.70 USDT, 213-country targeting and crypto top-ups from $40. Licensed gambling campaigns are reviewed case by case — contact @ADSunSupport first.
Sources
Update log
- 2026-11-09: First published as part of the Adsun casino bonuses, free bets & casino launch series (batch 12).