Deliverability to rediffmail.com
Rediff.com is an India-based media company founded by Ajit Balakrishnan in 1996. In 2004, Rediffmail.com was quite possibly the first email service provider to offer 1GB of storage space on all its free email accounts. Other large email service providers would eventually follow suit, making Rediffmail.com one of email communications' early trailblazers.  

Emails Sent to rediffmail.com: 9,927,287

Open Rate to rediffmail.com: 447,909 (4.5%)

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Sent vs Opens for rediffmail.com

Date Sent Opens Open Rate
1/25/20252,446632.5%
1/24/20253,2971955.9%
1/18/20251,965804%
1/17/20253,3462186.5%
1/16/20252,5521786.9%
1/15/20252,7382027.3%
1/14/20253,1282056.5%
1/13/20253,4752065.9%
1/12/20252,572722.7%
1/11/20254,9971853.7%
1/10/20253,4362366.8%
1/9/20252,8352017%
1/8/20254,4852114.7%
1/7/20255,3462725%
1/6/20254,3292475.7%
1/4/20254,9771182.3%
1/3/20254,3872044.6%
1/2/20253,9591634.1%
1/1/20252,1571557.1%
12/31/20243,0842106.8%
12/30/20242,9162378.1%
12/29/20241,453956.5%
12/28/20244,5261713.7%
12/27/20242,3822058.6%
12/26/20242,3841857.7%
12/25/20241,93824112.4%
12/24/20243,1031986.3%
12/23/20242,9771986.6%
12/22/20241,031737%
12/21/20241,7821116.2%

Blocks from rediffmail.com

No blocks during specified time frame

Bounces from rediffmail.com

Explanation of bounce codes

Message Count
550 Requested action not taken: mailbox unavailable 4,709
550 A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address failed : Mailbox is inactive. 565
Invalid:550-MailboxUnavailable 235
550-5.2.1 The email account that you tried to reach is inactive. For more 550-5.2.1 information, go to 550 5.2.1 https://support.google.com/mail/?p=DisabledUser 1
554 5.2.2 mailbox full; Failed to process message due to a permanent exception with message Microsoft Unified Storage is full. Microsoft Unified Storage is full. 1
SMTP; 550 Requested action not taken: mailbox unavailable 1
554 30 Sorry, your message to cannot be delivered. This mailbox is disabled . 1
550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. For more information, go to 550 5.1.1 https://support.google.com/mail/?p=NoSuchUser 1
DNS Error. DNS type 'mx' lookup responded with code NXDOMAIN 1

Methodology

Send and open statistics are updated daily. Bounces and blocks are updated in real-time. Every day, open statistics are updated for the last 14 days. Generally, you'll notice an increase of an open rate for a domain for a day over the course of 14 days, since not all open events occur the same day an email is sent. That means that open rate data is tied to the actual emails sent on a particular day.

Bounce and block codes are the codes as returned by the remote SMTP server after having been de-personalized. Meaning, unique identifiers present in SMTP codes are removed so that SMTP responses can be grouped for analysis. In certain cases, such as when the email is being relayed through an intermediary SMTP server, the remote SMTP server may not be the same as the MX record for the domain. SMTP codes are categorized as "bounces" vs "blocks" by internal human review. Bounces generally indicate an invalid email address. Blocks generally indicate a rejection of the email message but a valid email address.

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