Awesome

mail2rm

mail2rm allows you to send PDF documents to your reMarkable device by email. The script is intended for people who run an own mail transport agent (MTA) instance e.g. postfix. mail2rm is supposed to be used as a postfix filter. This allows you to run the script during mail delivery. If the upload fails you will get an undeliverable notice including the error message.

Installation

Download rmapi from https://github.com/juruen/rmapi/releases and copy the executable binary to your server e.g. to /usr/local/bin/rmapi
Add a separate user to your server (here Debian/Ubuntu):
```
adduser --system remarkable
```
Copy the mail2rm script to your server e.g. to /usr/local/bin/mail2rm and make it executable.
Register rmapi as the mail2rm user
```
sudo -u remarkable rmapi
```
Integrate mail2rm into postfix.

Add the filter to master.cf:
```
mail2rm unix - n n - 50 pipe flags=F user=remarkable argv=/usr/local/bin/mail2rm -a mymail@example.com -a workmail@example.com -r /usr/local/bin/rmapi ${sender}
```
The -a/--allowed sender option allows to limit the addresses which can send documents. The option can be used multiple times. Replace the above -a statemens with your email addresses. The -r/--rmapi option specifies the path to the rmapi executable.

Add a check_recipient_access rule in master.cf:
```
smtpd_recipient_restrictions =
    [...]
    check_recipient_access hash:/etc/postfix/recipient_access
```
Add the destination address to recipient_access file:
```
remarkable@example.com FILTER mail2rm:dummy
```
Update and reload configuration:
```
postmap /etc/postfix/recipient_access
systemctl reload postfix
```