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Sends email asynchronously.

Component Version macOS Windows Linux Server iOS SDK
WinSendMail 9.1 ❌ No ✅ Yes ❌ No ❌ No ❌ No
MBS( "WinSendMail.SendAsync"; WinSendMailRef; Flags )   More


Parameter Description Example
WinSendMailRef The email reference number obtained using WinSendMai.CreateEmail function. $Email
Flags The flags.
Add 1 to show no dialog.
Add 2 to disable logon user interface.
Add 4 to disable parent window.


Returns OK or error.


Sends email asynchronously.
The email is sent using the locally installed mail client. But this function does not wait for the result.
Some email clients seem not to like more than one attachment.

With outlook you can keep text empty and attach a html file. Then Outlook will use the html file as content of the email and allows you to send html email.

Falls back to WinSendMail.SendAnsi if Unicode support is missing in older Windows versions.

Outlook loves to return failed, if you pass in email address for To/BCC/CC and no name.

See also

Release notes

Blog Entries

This function is free to use.

Created 28th February 2019, last changed 3th April 2021

WinSendMail.SendAnsi - WinSendMail.SetFrom