If I can't use mailto protocol to open a mail with a html body, then how?
40806
Is it possible to add an HTML link in the body of a MAILTO link
113720
Not allowed to execute sendEmail() from custom function, but OK in script editor
76750
Fetch an email with imaplib but do not mark it as SEEN
147172
Javascript IMAP and SMTP client?
104130
How to send mail using PHP?
66665
How to prevent an email from accidentally being forwarded?
28941
What is the format for e-mail headers that display a name rather than the e-mail?
88668
Plain text version of emails does not contain any links
135604
Can I change email content without stopping a journey?
77000
Send mail without MFMailComposeViewController
77636
How to send HTML/CSS emails?
64679
Is SMTP server required to send mail through web server, by using JavaMail API?
20786
How do I need to configure SMTP Auth?
40518
Forcing the from address when postfix relays over smtp
48156
How do I leave mail at the registrar while serving the web from host?
15844
How can I prevent Postfix from accepting mail from domains it owns, that it didn’t send?
61398
How do I create a rule in Outlook for handling emails which are not sent using the senders domain