r/Mailbox_org

Invalid authenticator code

I just moved over to mailbox.org yesterday, and set up 2FA with my phone and a backup on my security key. But trying to login today on the actual website, using either of the codes when prompted gives me an "Invalid authenticator code" error. I can't even access the support because it asks me to login to do so.

reddit.com
u/xsm17 — 7 hours ago

What happens if I don't renew?

This is my first experience using mailbox.

I'm using the standard account plan, 3 euros per month.

It expires on May 25th. I have a few questions I hope you can help me with:

  1. If I don't renew, will my main email and alias email still receive the notification? Or do I have to renew to log in to my account?

  2. If my account is permanently locked due to non-renewal, how long will it take before I can register again using the old, locked email address? Thank you very much.

u/Fantastic_Animal_167 — 2 days ago

Absolutely awful

As a long-term user and almost advertiser of Mailbox.org as I've convinced many people to join the service, it's painful to have to come here to share my experience.

I use Mailbox.org to manage my professional custom email address in the health sector. I chose the service for its privacy, and despite its clankiness.

Was using the service without any issues, then suddenly I stopped receiving professional emails, including very important client emails. I only became aware when clients contacted me to let me know, then I tried to email myself and got an error as reply. I then identified that I was not receiving any email for 3 days in both my custom email and the Mailbox email. Therefore, the problem was not the custom email..

Without any contact from Mailbox team, I contacted support as I believed that there was some misconfiguration. No reply for another 48 hours, so I moved my custom domain elsewhere to avoid further damage.

Only after days I received an email from Mailbox:

"Hello,

thank you for your message.

We have determined that you are in violation of our Terms of Use because fraudulent emails are being sent from your account. For this reason, we have now blocked your account."

Absolutely nothing else, no information about reported fraudulent activities or emails. I've checked my outbox and sent emails and didn't see any evidence of fraudulent emails.

Emailed them back twice and haven't heard back after 10 days.

I have a paid service and zero support. What's worse, unilateral decision to block/cancel my professional account without any previous alert or contact, and without any further replies to explain the reasons.

Feom this point, I can only recommend people to stay away from Mailbox.org, particularly if you use it for business and need a reliable service.

Absolutely awful, have never experienced such a non-existent support in my life for a paid service, and such neglect for a service that is supposed to offer reliability.

My strong recommendation to everyone is to stay away and look for a reliable service elsewhere, with support.

After Mailbox took my money and disappeared without providing a professional service, I also worry because I now feel that I have to move my personal emails from Mailbox as well as I have no confidence that the service will continue as they have demonstrated that they can just "decide" to cancel my account without any criteria.

reddit.com
u/Confusing_Statement — 5 days ago

Mailbox impressions

Hello Users, over the last few months I've been observing some posts coming through that sounded less than what is expected from an email service. I also noticed Mailbox is also offering online tools like office. At this point I'm still thinking about if I should remain with Proton(Ult.) or shifting my major domain ( and another one) to MB. Is anyone able to give an honest report how it is performing? TIA

reddit.com
u/gilude — 7 days ago
▲ 0 r/Mailbox_org+1 crossposts

Authenticatoin Problem

Hi people!

I just want to share a problem that i had in the last few days: I recently terminated the subscription that I had with NordVPN and signed with with ProtonVPN with the newly created Mailbox.org e-mail. But, unfortunalety, does not matter how many times I send the authentication mail from proton to mailbox because it never receives. I checked the spam, trash and unread boxes and nothing. I even tried to open direct the spams to the trash so I could see them there but I had no success.

Is there a way to fix this?
Thank you for time!

u/xSpike_ — 6 days ago

What's the iOS push notification/EAS situation now?

I want to move to Mailbox.org but I've read several posts about iOS push notification not working, but for some it does work, but others mention EAS and I've also read that it might work with IMAP Idle...

What's the situation in May 2026? What works and what doesn't? Is my only option a check every 15 minutes?

Thank you!

u/lalondan — 9 days ago

Not recommended

Support is super slow and unhelpful and their calDAV server is not RFC compliant. I mean this is literally their only business: mail and calendar. But they can’t even implement the standard and are unwilling to help. Definitely not recommending them.

reddit.com
u/bizepsfirst — 11 days ago

Digital Independence Day is going global!

Since 1 January 2026, the initiative has been helping people switch from Big Tech to digitally sovereign alternatives: whether that be messaging and email services, social media platforms, search engines, cloud storage or other digital services.

The DI.DAY website is now finally available in English – and with it, all the guides and tips for the path to greater digital self-determination: https://di.day/en

u/mailbox_org — 10 days ago