Safari Mailto Converter
I do not ever want to use Mail.app on MacOS. It is not good.
Safari used to support an extension called mailto.safariextz.
That extension is no longer supported. The Internet Archive has a copy of the website that hosted that extension: sites.google.com/site/mailtoextension/. If you can manage to get a copy of the binary extension, it fails to install.
My solution is a bookmarklet. It converts mailto links on the page to links which can open links in Gmail on the web. It's based on this StackOverflow Answer here.
This solution is specific for Gmail. It could be adapted for other webmail services.
Drag the link below to your browser's toolbar... (Gmail)
Source Code
let links = document.querySelectorAll('a[href^="m"], a[href^="M"]');
let key, value, i, j, params, param, parts;
for (i = 0; i < links.length; i++) {
if (links[i].getAttribute('href').toLowerCase().indexOf('mailto:') !== 0) {
continue;
}
let link = links[i];
// mailto:someone@example.com?subject=SUBJECT&body=BODY&bcc=someone.else@example.com
// https://mail.google.com/mail/?view=cm&fs=1&to=someone@example.com&su=SUBJECT&body=BODY&bcc=someone.else@example.com
const gmail_url = 'https://mail.google.com/mail/';
let gmail_url_parts = {
'view': 'cm',
'fs': 1,
'to': '',
'su': '',
'body': '',
'bcc': ''
};
const gmail_parameter_mapping = {
'to': 'to',
'subject': 'su',
'cc': 'cc',
'bcc': 'bcc',
'body': 'body'
};
let full_href = link.getAttribute('href');
let href = full_href.replace('mailto:', '');
let parts = href.split('?');
gmail_url_parts['to'] = parts[0];
if (parts.length > 1) {
let params = parts[1].split('&');
for (j = 0; j < params.length; j++) {
param = params[j].split('=');
if (param.length === 2) {
key = decodeURIComponent(param[0]);
value = decodeURIComponent(param[1]);
if (gmail_parameter_mapping[key]) {
gmail_url_parts[gmail_parameter_mapping[key]] = value;
} else {
gmail_url_parts[key] = value;
}
}
}
}
// Construct the new href
let newHref = gmail_url + '?';
for (key in gmail_url_parts) {
if (gmail_url_parts[key] !== '') {
newHref += key + '=' + encodeURIComponent(gmail_url_parts[key]) + '&';
}
}
newHref = newHref.slice(0, -1); // Remove last '&'
link.setAttribute('href', newHref);
const style = 'box-shadow: 0 0.1rem, 0 -0.1rem;';
if (link.getAttribute('style')) {
link.setAttribute('style', link.getAttribute('style') + ';' + style);
} else {
link.setAttribute('style', style);
}
}