Bulk Email Sender Guidelines

If you are a mail listing provider and send bulk emails every day, of course you don't want your emails are blocked or moved to Junk folder of the recipient mailbox.

To increase the inbox delivery rate of your messages, make sure that all recipients on your distribution lists actually want to receive the mail. Have a look the following sections for some tips on how to make sure your messages are welcomed by most email providers.

Common Rules

Authentication and Identification

Subscription and Unsubscribing

Body Format

Realtime Black List

Check if your IP address(es) or linked domain(s) in email body is in realtime black list by the following online tools:

Gmail, Yahoo, Hotmail and AOL Bulk Email Sender Guidelines

If you are sending mail in accordance with above guidelines and still have problems to deliver email to those email providers, you can contact the support by the following URL:

See Also

Using EASendMail SMTP .NET Component
User Authentication and SSL Connection
Enable TLS 1.2 on Windows XP/2003/2008/7/2008 R2
Using Gmail SMTP OAUTH
Using Gmail/GSuite Service Account + SMTP OAUTH Authentication
Using Office365 EWS OAUTH
Using Office365 EWS OAUTH in Background Service
Using Hotmail SMTP OAUTH
From, ReplyTo, Sender and Return-Path
Digital Signature and E-mail Encryption
DomainKeys and DKIM Signature
Send E-mail Directly (Simulating SMTP server)
Work with EASendMail Service (Email Queuing)
Process Bounced Email (Non-Delivery Report) and Email Tracking
EASendMail .NET Namespace References
EASendMail SMTP Component Samples