Facebook Twitter
Toggle navigation
  • About
  • Security
  • Blog
  • Careers
  • Support
  • Enterprise
    • ProtonMail Business
    • GDPR Compliance
    • Guide to IT Security
  • LOG IN
  • SIGN UP

 

Ask your Question

Home /Knowledge Base /Getting started with ProtonMail/Send & receive messages

Send & receive messages

Why are my files larger on ProtonMail than on my device?

  • -1
  • 27925

ProtonMail Secure Messages

  • 0
  • 225651

How to use Undo Send

  • 0
  • 6970

What is a “Sending Limit”?

  • 2
  • 121971

How to use PGP

  • 0
  • 447778

Encrypt Message for Non-ProtonMail Recipients

  • 24
  • 645669

How to send messages

  • 8
  • 86126

Encrypting attachments

  • 5
  • 66835

Message Expiration

  • 46
  • 199028

Attachment and email size limits

  • -11
  • 80203
  • 1
  • 2
  • Next

Support Categories

  • 28Bridge
  • 6Import and export
  • 15Why ProtonMail?
  • 3Storage
  • 6ProtonMail Professional FAQ
  • 2Privacy
  • 16Business
  • 31Premium
  • 13Getting started
  • 9Calendar
  • 111Getting started with ProtonMail
  • 14Custom Domains
  • 11Security
  • 5Sign Up
  • 11Login & Mailbox Passwords
  • 9Why won't it let me?
  • 2Something is wrong!
  • 6Switching to ProtonMail
  • 18Mobile
  • 10Contacts
  • 11Send & receive messages
  • 6Getting organized
  • 28ProtonMail tips & tricks

 

Knowledge Base
  • Why ProtonMail
  • Sign Up
  • Login & Mailbox Passwords
  • Switching to ProtonMail
  • Mobile
  • Contacts
  • Send & receive messages
  • Getting organized
  • ProtonMail tips & tricks
  • Plans and prices
  • Upgrading
  • Downgrading
  • Features
  • Upcoming features
  • Planned features
  • Feature request

Don't find your answer? We're happy to help you!

CONTACT OUR SUPPORT TEAM

Proton Technologies AG

Route de la Galaise 32
1228 Plan-les-Ouates
Geneva, Switzerland



General: Show Email
Media: media@protonmail.com
Legal: legal@protonmail.com
Partnership: partners@protonmail.com



Abuse: abuse@protonmail.com
For legal/police inquiries
click here



For support inquires please visit:
protonmail.com/support

General Inquiries

For customer support inquiries, please submit the following form for the fastest response:
Support Form

For all other inquiries:
contact@protonmail.com 

    -----BEGIN PGP PUBLIC KEY BLOCK-----
    Version: OpenPGP.js v4.10.8
    Comment: https://openpgpjs.org

    xjMEX85NMRYJKwYBBAHaRw8BAQdAhwFxKgsFU8QiBZlbUxuzrJIiYgVzM0Av
    B/IPUTv5YTbNL2NvbnRhY3RAcHJvdG9ubWFpbC5jb20gPGNvbnRhY3RAcHJv
    dG9ubWFpbC5jb20+wo8EEBYKACAFAl/OTTEGCwkHCAMCBBUICgIEFgIBAAIZ
    AQIbAwIeAQAhCRCtuTRTXwNhqxYhBA1L6MzXf+0hb7gsI625NFNfA2GrPUUA
    /1kRWoKzi4VLDxQkQHJme+C2d8Kuj5qGUESG2UdT8oXpAP9Q9Ko9cAFEWXnL
    Tz5neP+QFezaPyQJ1hzRgXIHbu8QCM44BF/OTTESCisGAQQBl1UBBQEBB0Ac
    REfc4aE34zZnVQ9MS5S+Xk6xEq53x0gWzY4/TrR4KQMBCAfCeAQYFggACQUC
    X85NMQIbDAAhCRCtuTRTXwNhqxYhBA1L6MzXf+0hb7gsI625NFNfA2GrIBEA
    /1rIGinVCXDEHzb7eKKRHnKZP1HLlIneGO2KxXODzEiAAP9dC33bnoXiuKnL
    xQy1XWSLdMzPNCWeY5buvwrJXl15AQ==
    =sMlu
    -----END PGP PUBLIC KEY BLOCK-----

You can also Tweet to us:
twitter.com/protonmail

ProtonMail

  • Pricing
  • Security
  • Shop
  • Press/Media Kit
  • Onion Site
  • ProtonMail Status

Features

  • iOS App
  • Android App
  • IMAP/SMTP Bridge
  • ProtonVPN
  • ProtonMail Business
  • Encrypted Contacts

Legal

  • Imprint
  • Privacy Policy
  • Terms & Conditions
  • Transparency Report
  • Report Abuse
  • GDPR Compliance

Company

  • Blog
  • Team
  • Careers
  • Support
  • Donate
  • Open Source

Social

  • Facebook
  • Twitter
  • Feedback Forum
  • Reddit
  • Instagram

 

 

© 2021 Proton Technologies AG. All Rights Reserved.