The three automatic tracking models
SMS parsing reads transaction messages on the phone and turns them into expenses. It is fast and common in India, especially on Android, but it asks for SMS access and can struggle with platform differences, duplicate notifications, and bank-template changes.
Account Aggregator uses a regulated consent framework to fetch financial information from supported institutions. It can cover more than expenses, including accounts, cards, investments, loans, and net worth, but it is still an account-linking flow.
Email-alert tracking reads transaction emails from known bank and card senders. It sits between the two: less broad than Account Aggregator, less phone-permission-heavy than SMS parsing, and useful across web and iPhone when Gmail alerts exist.
Privacy tradeoffs
SMS trackers should explain whether parsing happens on-device, whether data leaves the phone, and exactly why SMS permission is needed. Account Aggregator products should explain the regulated consent path, data categories fetched, and how consent can be revoked.
Glass Money asks for Google’s read-only Gmail scope. It cannot send, delete, or modify mail, and it targets transaction alert mail from known financial senders. That is still sensitive access, so the privacy policy, limited beta, and restricted-scope verification path matter.
Coverage tradeoffs
SMS can be excellent for Android users whose banks send clean transaction messages. Account Aggregator can be excellent for broad account and net-worth coverage where the institution is supported and consent succeeds. Email alerts are excellent when the bank reliably emails UPI, card, and account activity to Gmail.
None of these methods should be treated as complete without reconciliation. Refunds, card-bill payments, self-transfers, failed transactions, duplicate alerts, and statement-only periods all need careful handling.
Platform tradeoffs
The strongest email-alert advantage is platform flexibility. A Gmail-based workflow can run from the web and support iPhone users without asking for Android SMS access. The strongest SMS advantage is immediacy on Android. The strongest Account Aggregator advantage is breadth beyond spending.
If you mostly want one expense ledger, start from the least invasive data source that gives you enough coverage. If you want every financial asset and liability in one place, evaluate Account Aggregator products directly.
Historical import
SMS trackers may backfill old SMS messages already on the phone. Account Aggregator can fetch available account history depending on institution and consent. Email tracking can backfill historical Gmail alerts if they remain in the connected inbox.
Glass Money also supports statement PDF upload, because historical email coverage is not always enough. Statements are the practical safety net when an account was SMS-only last year or a bank changed alert senders midstream.
How to decide
Pick SMS if you are Android-first and comfortable granting SMS access. Pick Account Aggregator if broad net-worth coverage matters more than avoiding account-linking consent. Pick email alerts if you want automatic expense tracking across web or iPhone without SMS permission or bank-account linking.
For Glass Money specifically, check supported banks and alert prerequisites before judging the product. The promise is not “we see every transaction everywhere.” The promise is a narrow, private, useful workflow for the alerts your banks already email.
Sources and review notes
We use primary sources where possible and review comparison pages quarterly. Product availability and pricing can change, so check each linked source before making a decision.