Does your ISP limit the number of emails you can send each hour or each day?

Of course they do!

Every outgoing SMTP mail server has an email send policy which includes hourly or daily email send limits. This policy will ultimately determine how many emails you can send each day.

If you try to send more emails than the hourly or daily email sending limits of your mail server, you will notice errors being returned after the specified quota is met, saying something along the lines of:

you have reached your daily sending quota…

If you go over the daily email send limits of your email server, you will generally have to wait 24 hours before you can send more email through that particular server.

But, what are the hourly or daily email send limits for your email server? Here are some examples:

• The Gmail mail server send limit is approximately 100-150 emails per day when connected to the server from a remote email client. You can send 500 emails each day through the Gmail SMTP server when logged into their web interface.
• The Comcast mail server limits residential customers to send 1,000 messages per day. Comcast Business customers can send 24,000 emails per day through the Comcast outgoing SMTP mail server.
• The basic GoDaddy email server limits senders to send  only 250 outgoing emails per day. GoDaddy does offer business email accounts, however, which allow customers to send more emails each day (for a fee, of course.)

 

“How do you find out about the hourly or daily email send limits of the email servers that you use? The best way is to contact them directly and ask.”

So, what’s a guy to do if he needs to get an important email out to 5,000 customers but his ISP only allows him to send 500 emails a day? If your current SMTP mail server does not support your email list size or sending frequency, there are some options:

1. Contact the host of your outgoing SMTP mail server(s) and ask if they have a business account which would allow you to send more emails per hour or day.
2. Use GroupMail’s Direct Send option, which allows you to bypass your SMTP server altogether and send email directly from your computer to your recipients using GroupMail’s own internal SMTP engine (which, by the way, conforms fully to the latest SMTP RFC:5321.) GroupMail will create a connection directly from your PC to your recipients mail server and send your message though it.
3. Use a secondary SMTP email server such as AuthSMTP, or SMTP2Go or SocketLabs and route your messages through that secondary SMTP mail server.
4. Find a web hosting company that has daily email sending limits which meet your needs.
5. Setup your own MS Exchange Server and configure it for SMTP email delivery.

 

So, while GroupMail allows you to send to and manage email lists of any size; the success of email delivery to large groups is ultimately dependent upon the SMTP mail server that you are using to send your messages.

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