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System Requirements:

macOS 10.14


Is Mailings right for you?

Deciding if Mailings is the proper choice for you largely depends on your mail server. Although Mailings is capable of sending out very many messages, even thousands of messages at a time, its actual capacity is limited by possible sending limits of your mail server.


Many mail servers impose limitations on the amount and rate of email delivery, in addition to the size of email messages. So, when considering if Mailings is appropriate for your needs you should determine what these limitations are, if any.


Mailings has a feature called "Throttle" which you can employ to prevent a mailing from exceeding its limits. Mailings does this by enabling you to specify the rate mail is sent either by setting a period or frequency of sending.

For example, Gmail help (at Gmail sending limits) says:


"In an effort to fight spam and prevent abuse, Google will temporarily disable your account if you send messages to more than 500 recipients or if you send a large number of undeliverable messages. If you use a POP or IMAP client (Microsoft Outlook or Apple Mail, e.g.), you may only send a message to 100 people at a time. Your account should be re-enabled within 24 hours."


Help for Google Apps (at Google Apps sending limits) also says:


"Google has a number of sending limits in place to prevent abuse of our system, and to help fight spam. If one of your mail accounts reaches an abuse limit, the account will be temporarily unable to send mail.

Each Google Apps account can currently send to 500 external recipients per day. Google Apps for Business and Education users can send to 2000 external recipients per day."


MobileMe has similar limits. Referencing "MobileMe: Message sending limit alert when trying to send an email":


"MobileMe Mail has a message sending limit of 200 messages or 1000 recipients per rolling 24-hour period. For example, if you send 100 messages at 8 a.m. and then 100 messages at 12:00 noon, you would reach your message sending limit at noon, but you would be able to start sending messages again at 8 a.m. the next day."


The following references provide more information you may want to consider:


Send Email Limit for SMTP Mail Servers - The Basics




SMTP Sending Limit and Email Rate Limits for ISPs - Verizon, Comcast, EarthLink, etc