TinkMail Product Update: September 2025 – More Reliable Sync & Stronger Account Protection

2025-09-25•3 min read•Product Updates

A Season About Trust: Reliable Sync + Stronger Account Protection

This report reflects a span of recent months of steady work. Much of it you only notice when something would have gone wrong—but now doesn’t.

We strengthened account protection and made inbox syncing calmer and more predictable across mail apps. Two themes guided everything: make IMAP (the protocol your mail apps use) behave exactly as your client expects, and raise the baseline of security—not just prepare for improvements, but actually ship them.

Want to experience the smoother sync and stronger account protection? Create an account → or explore business capabilities →.

Account Security

What started as groundwork earlier in the cycle is now live protection. Here is what’s already in place for all users:

Multi‑factor authentication (TOTP codes) – optional but fully functional.
Recovery code for MFA.
Recovery mail to help you regain access if you get locked out.
Reset password via recovery mail.
Enhanced rate limiting on sign‑in, recovery and auth‑sensitive actions to slow automated abuse.

With these features, your account is better protected against unauthorized access. You can use multi-factor authentication to add an extra layer of security, and you have options to recover your account if needed.

Note: It's recommended to enable multi-factor authentication today to enhance your account security.

Making IMAP More Reliable

If you use Apple Mail, Outlook, Thunderbird or a mobile client, you rely on a constant back‑and‑forth conversation with our servers. What behind screens is the IMAP protocol, which has decades of quirks and optional features. Every mail app has its own expectations about how that conversation should go.

This month we focused on making that conversation clearer. We added proper folder subscription handling so mail apps can show only the folders you actually care about. We refined how new messages are announced so your client updates quickly without over‑polling. We also trimmed back a couple of half‑supported commands so apps don’t get false expectations and stall.

In short: fewer mysterious “why didn’t that appear yet?” moments, faster folder state updates, and groundwork for push‑style updates coming soon (so your mail appears without waiting for the next manual check).

To keep improvements steady, we introduced a broad automated test layer that behaves like a real mail client: signing in, selecting folders, listing hierarchies, fetching message details and checking consistency during background operations.

A lightweight simulation of a desktop mail client helps us catch subtle timing issues early instead of letting them reach you.

Thank You

To everyone stress‑testing different mail clients and flagging early concerns: you helped harden the platform at the perfect time. The foundation is stronger; now we can build the visible layers faster.