The best alternatives to Umbra cash are Etherglade, BitBay Pay 3.0, and NOWPayments. If these 3 options don't work for you, we've listed a few more alternatives below.
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Etherglade is a drop-in UI you can add to your site in less than 5 minutes to allow you to accept Ethereum with Metamask and Ledger wallet support (and more on the way)! Smart contracts are supported too!
BitBay Pay is a complex, yet easy to implement cryptocurrency payment solution fit not only for eCommerce, but online services and B&M businesses as well. It's one of a kind platform that automatically converts crypto into fiat and does so, so much more!
NOWPayments is the best service that allows everyone to accept crypto payments on their websites, online stores, and social media accounts. It’s a non-custodial service, meaning it doesn’t hold or store your funds in any way. NOWPayments supports more than 50 cryptocurrencies, and it offers low transaction fees.
SendCrypto is a bot for sending crypto payments on Twitter, Reddit, and Slack. No deposits or withdrawals - send directly from your wallet to their's with no middlemen.
When transferring crypto funds, you can secure them by using a protection code. In essence, it is a password required for receiving the transfer. After you’ve sent funds, the recipient will see them but won’t be able to withdraw any on his/her wallet until he/she enters the protection code.