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Deliverability

MTA-STS

MTA-STS (Mail Transfer Agent Strict Transport Security) is a protocol that enforces encrypted connections between email servers.

MTA-STS allows domain owners to specify that email servers must use TLS encryption when connecting. It prevents downgrade attacks where an attacker forces a plaintext connection. Implementing MTA-STS improves email security and helps maintain reliable deliverability.
Free Plan Available

You shouldn’t have to overpay for cold email tools. With Mystrika, you won’t.

It does cold email warmup, sequences, unified inbox, and AI writing - all in one place. Every other tool that does this charges somewhere between $100 and $500 a month. Mystrika has a free plan. 500 prospects. No expiry. No card.

The people who consistently book meetings from cold email aren’t smarter. They just stopped leaving money on the table.

See the Free Plan