Put the document in their hand, not in an inbox they never open.
Most Indian consumers do not open email. A fee receipt, a lab report, an insurance renewal quote or an invoice emailed to a customer has a very good chance of never being read, and the follow-up phone call to ask for it costs you more than the document did. SMS is the one channel almost everyone still reads, so the practical answer is to send the document as a link in an SMS rather than as an attachment in an email.
That raises the obvious question about privacy, which is why these links are per recipient rather than one shared URL: the link is unguessable, you choose how long it stays live, and you can revoke it. For anything carrying personal or financial detail you can also require the recipient to confirm their mobile number before the file opens, so a forwarded link is useless to anybody else.
- Any common file type — PDF, JPG, PNG, DOC, XLS or a short video.
- A separate link per recipient so one customer's document is never another customer's URL.
- Expiry and revoke — set a validity window, or kill a link that went to the wrong number.
- Optional number confirmation before the file opens, for financial or medical documents.
- Delivery and open reports so you know the document was both sent and actually read.