FlexPay is integrated to an incredible number of gateways. Most of them are listed below, however there may be more that aren’t yet added on this list. So, if you’re interested in running with FlexPay, and you don’t see your gateway on this list, feel free to ask us about it.
| Gateway | Website |
| Acapture (now Payvision) | acapture.com |
| Acquired | acquired.com |
| Adyen | adyen.com |
| AGP (Access Group Processing) | accessgroupprocessing.com |
| Authorize.Net | authorize.net |
| Bambora (formerly ePay, Beanstream) | bambora.com |
| Bambora Asia-Pacific | bambora.com |
| Banco Sabadell (via Redsys) | redsys.es |
| Barclaycard Smartpay | barclaycardsmartpay.com |
| Barclays ePDQ Extra Plus | barclaycard.co.uk |
| Beanstream (now Bambora) | beanstream.com |
| Bluefin (formerly PayConex) | bluefin.com |
| BluePay | bluepay.com |
| BlueSnap | bluesnap.com |
| Borgun | borgun.is |
| BPoint | bpoint.com.au |
| Braintree | braintreepaymentsolutions.com |
| BridgePay (BridgeComm) | bridgepaynetwork.com |
| CardConnect (CardPointe) | cardconnect.com |
| CardProcess (now VR Payment) | cardprocess.de |
| Cardstream | cardstream.com |
| CatalunyaCaixa (via Redsys) | redsys.es |
| Cayan (TSYS) | cayan.com |
| Cecabank | ceca.es |
| CenPOS (Elavon) | cenpos.com |
| Chase Paymentech (Orbital) | chasepaymentech.com |
| Checkout | checkout.com |
| Clearhaus | clearhaus.com |
| Conekta | conekta.com |
| Creditcall (NMI) | creditcall.com |
| Credorax | credorax.com |
| CT-Payment (now PayFacto) | ctpaiement.com |
| CyberSource | cybersource.com |
| DataCash (now MasterCard Payment Gateway Service) | datacash.com |
| Decidir | decidir.com |
| Diamond Mind | diamondmindinc.com |
| DIBS (now Nets) | dibspayment.com |
| dLocal | dlocal.com |
| EBANX | ebanx.com |
| Elavon | elavon.com |
| Element (now WorldPay) | elementps.com |
| ePay (now Bambora) | epay.dk |
| eWAY (eWAY Rapid) | eway.com.au |
| Fat Zebra | fatzebra.com.au |
| First Data Global Gateway | firstdata.com |
| First Pay | 1stpaygateway.net |
| Fiserv | fiserv.com |
| Forte | forte.net |
| Global Gateway e4 (now First Data) | globalgatewaye4.firstdata.com |
| Global Payments (Global Iris, Global Transport) | globalpaymentsinc.com |
| GlobalCollect (now Ingenico ePayments) | globalcollect.com |
| Heartland Payment Systems | heartlandpaymentsystems.com |
| iATS Payments | iatspayments.com |
| Ingenico ePayments (formerly GlobalCollect, Ogone) | ingenico.com |
| Inovio | inoviopay.com |
| iVeri | iveri.com |
| IXOPAY | ixopay.com |
| JetPay (now NCR) | jetpaygateway.com |
| Kushki | kushkipagos.com |
| Latitude19 | l19tech.com |
| MasterCard Payment Gateway Service (formerly DataCash, TNS) | mastercard.com |
| MaxiPago! | maxipago.com |
| MercadoPago | mercadopago.com |
| Merchant e-Solutions | merchante.com |
| Merchant Partners | merchantpartners.com |
| Merchant Warrior | merchantwarrior.com |
| Mercury (now WorldPay) | mercurypay.com |
| Meritus (now PaySafe) | merituspayment.com |
| Moneris | moneris.com |
| Mundipagg | mundipagg.com |
| MX Merchant | mxmerchant.com |
| NAB Transact | nab.com.au |
| NCR Secure Pay (formerly JetPay) | ncrretailonline.com |
| NETbilling | netbilling.com |
| NetPay | netpay.mx |
| Nets (formerly DIBS) | nets.eu |
| NMI | nmi.com |
| Ogone (now Ingenico ePayments) | ogone.com |
| Openpay | openpay.mx |
| Optimal Payments (now PaySafe) | optimalpayments.com |
| Orbital (Chase Paymentech) | chasepaymentech.com |
| Paya (formerly Sage Payment Solutions) | paya.com |
| PayCertify | paycertify.com |
| PayConex (now Bluefin) | payconex.net |
| Payeezy (formerly GGE4) | payeezy.com |
| PayEx | payex.com |
| PayFacto (formerly CT-Payment) | payfacto.com |
| PayJunction | payjunction.com |
| Payment Express (now Windcave) | paymentexpress.com |
| Paymentez | paymentez.com |
| Paymill | paymill.com |
| PayPal (Payflow Pro) | paypal.com |
| PaySafe (formerly Meritus, Optimal Payments) | paysafe.com |
| Paystation | paystation.co.nz |
| PayU Latam | payulatam.com |
| PayVector | payvector.co.uk |
| Payvision (formerly Acapture) | payvision.com |
| Pex | pexintl.com |
| Pin Payments | pin.net.au |
| Processing.com | processing.com |
| ProPay | propay.com |
| PSiGate | psigate.com |
| Quantum | quantumgateway.com |
| QuickBooks Merchant Services | quickbooks.intuit.com |
| QuickPay | quickpay.net |
| Qvalent | qvalent.com |
| Realex | realexpayments.com |
| S5 | s5.dk |
| SafeCharge | safecharge.com |
| Sage Payment Solutions (now Paya) | sagepayments.com |
| SagePay | sagepay.co.uk |
| SecurePay Australia | securepay.com.au |
| SecurionPay | securionpay.com |
| Stripe (Stripe Connect, Stripe Payment Intents) | stripe.com |
| TNS (now MasterCard Payment Gateway Service) | tnsi.com |
| Transact Pro | transactpro.eu |
| TransFirst (now TSYS) | transfirst.com |
| TrustCommerce | trustcommerce.com |
| TSYS (TSYS Multipass, formerly TransFirst) | tsys.com |
| USA ePay | usaepay.info |
| Vanco | vancopayments.com |
| Vantiv (formerly Litle, now WorldPay) | vantiv.com |
| VisaNet Peru | visanet.com.pe |
| VR Payment (formerly CardProcess) | vr-payment.de |
| WePay | wepay.com |
| Windcave (formerly Payment Express) | windcave.com |
| Wirecard | wirecard.com |
| WorldPay (formerly Element, Litle, Mercury, Vantiv) | fisglobal.com |