To validate email deliverability, you need to test spam filters and blacklists.

To validate email deliverability, especially in terms of avoiding spam filters and blacklists, using email testing services is highly effective: A. Email testing services like Mail Tester and GlockApps analyze email content, simulate sending to major email providers, and report on elements that could trigger spam filters. These services provide actionable insights that can help in adjusting email content and settings to improve deliverability.

While B and C are valuable for overall email deliverability management, they do not specifically provide testing or simulation of spam filter activation, which is crucial for proactive deliverability testing.

For more on improving email deliverability with Salesforce, including the use of testing tools, you can visit:https://developer.salesforce.com/