mailbox vs Proton Mail

mailbox is a paid email service from a maker founded in 2014 and headquartered in Berlin, Germany. It works on the web, iOS, Android, Windows, macOS, and Linux, and supports IMAP and SMTP; Light also includes POP3 access. End-to-end encryption and custom domains are supported. There is no free plan, though a 30-day trial is listed. Light costs €1.00 per month when billed annually and includes 2 GB of mailbox storage, three @mailbox.org aliases, a calendar, and an address book. Standard costs €4.00 per month, billed monthly, and includes 20 GB of mailbox storage, 25 @mailbox.org aliases, 50 custom-domain aliases, 10 GB of Drive storage, Office, and Meet. Premium costs €12.00 per month, billed monthly, with 50 GB of mailbox storage, 25 @mailbox.org aliases, 250 custom-domain aliases, 100 GB of Drive storage, Office, and Meet. The listed plan differences let users choose among storage and alias allowances, with Office and Meet included on the two higher plans.

Proton Mail is an encrypted email service available on the web, Windows, macOS, Linux, iOS, and Android. Its free plan lists 1 GB of storage and one email address, although its FAQ says storage starts at 500 MB; the free tier is described as having the same security level as paid plans. The service uses end-to-end and zero-access encryption, with open-source apps and independent audits. It blocks email trackers and includes phishing and spam protection, password-protected messages, and link confirmation. Users can schedule, undo, or snooze emails and organize messages with folders, labels, and categories. Easy Switch imports email, calendars, and contacts from other providers. Paid plans support external email clients through IMAP and SMTP using Proton Mail Bridge. Mail Plus lists 15 GB of storage, 10 extra email addresses, and one custom domain. Paid subscriptions include a 30-day money-back guarantee, and the desktop app has a 14-day free trial. Paid plans display monthly billing; the listed starting price is 3.99 /user/mo.