I’m building an Android app that lets user send emails. (Delivered via PHP)
How to prevent the app from being misused for spamming?
I’m building an Android app that lets user send emails. (Delivered via PHP) How
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I’m building an Android app that lets user send emails. (Delivered via PHP)
How to prevent the app from being misused for spamming?
Spammers want to reach lots of people, so you can meter the sending rate. Don’t allow more than, say, 10 recipients on a single message. Don’t allow messages to be sent more often than one per 30 seconds. Don’t support scripted sending (i.e., don’t handle broadcast Intents). Display a warning if the app tries to email more than 3 sequential entries in Contacts. If you really want to go all the way, analyse the content of the email and compare it to known spam.