> For the complete documentation index, see [llms.txt](https://docs.presend.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.presend.io/the-solution/inexpensive-effective-efficient.md). # Inexpensive, Effective, Efficient: The PreSend software syncs directly to your MetaMask chrome extension, and is compatible with most other cryptocurrency wallets such as Ledger, Trezor, TrustWallet, etc. If there is a wallet it is not compatible with, it is probably in the works as we speak. We will aim to integrate this, through strategic revenue generating partnership licensing agreements, with exchange wallets that do not have this capability as well. So, fear not, PreSend is here to save the day! PreSend does this process in mere seconds, so the user will not notice any lag in transaction time or speed of operations. You probably couldn’t even blink fast enough to beat PreSend’s entire process. PreSend charges only $1 per transaction (or 00.20% of the total transaction, whichever is larger), to ensure that the user’s hundreds, or even thousands, of dollars are safe, secure, and compatible for said transactions. A small price to pay for peace of mind. A single $100 transaction that PreSend cancels due to an incompatible chain can literally pay for 100 PreSend transactions. Imagine what a $1,000+ transaction can save and afford you! --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.presend.io/the-solution/inexpensive-effective-efficient.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.