How defensible is Gmail's position today?

[p_zuckerman]

Gmail’s dominance seems driven by deliverability, spam filtering, reliability, and ecosystem integration.

Encrypted providers like ProtonMail offer different tradeoffs, but haven’t seen mainstream adoption.

Curious how much of Gmail’s advantage is technical vs defaults and lock-in, and whether encrypted email could realistically compete at similar scale in the near future.

[Dominik1001]

Unfortunately, IMO Google's high lock in also due to the whole environment including Google Signup, makes it really hard for people to switch.

Proton is nice, however, the high encryption component also makes it super hard to enable use cases like agentic email. That I see as a blocker for them to become really relevant.

I'd love to have a privacy-first modern mail provider, that is no Big Tech and doesn't participate in the attention economy.

[p_zuckerman]

That resonates. The lock in feels less about email itself and more about identity and defaults across the Google ecosystem.

The point about encryption limiting agentic is interesting. It does seem like a real tension between strong privacy guarantees and server-side intelligence.

Do you think this is a fundamental limitation of E2EE email, or more a product/architecture choice that could be worked around with different trust models or client-side approaches?