Compose And Send Emails

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Attachment remindersProton Mail’s attachment reminders prevent you from accidentally sending emails to your recipient without including the mentioned attachments.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to check encryption status using lock iconsAll messages in Proton Mail show a lock icon that tells you their encryption status. In this article, we explain what these locks mean.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to set the default font and font size in the composer windowIn addition to formatting text in the composer window using the formatting ribbon, you can specify a default font and font size.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to use Undo SendIf you want to recall an email after you click Send in Proton Mail, you can use the Undo Send feature to retrieve your message.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Read receipts

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to use PGP with Proton MailLearn how to use PGP so you can encrypt your email communications when communicating with contacts who don’t use Proton Mail.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to set up an automatic replyHere’s how to set up an Out of Office or Vacation automatic response to all or some of your emails in Proton Mail using our auto reply feature.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Why are my files larger on Proton Mail than on my device?Learn why your attachments on Proton Mail appear larger in your email than on your device.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Can non-Proton Mail users respond to encrypted messages?If you’re on Proton Mail, learn how non-Proton Mail users can receive password-protected messages from you and reply securely.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Encrypting attachmentsRead about how Proton Mail handles the attachments, and what happens when you send and receive attachments form Proton Mail and non-Proton Mail contacts

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Attachment and email size limitsYou can attach multiple files to an email in Proton Mail by clicking the Attachment button or dragging and dropping a file into the email composer.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

Proton Mail message expirationWith Proton Mail, you can set encrypted messages to expire after a set amount of time for Proton Mail and non-Proton Mail recipients.

1. Proton Mail
2. Using Proton Mail
3. Compose and send emails

How to send an encrypted emailLearn more about email encryption and the easiest way to send a secure email using Proton Mail.