#Powermta smart relay trial
#Powermta smart relay free

To avoid conflicts with these protections, SMTP agents that send large amounts of mail through and should reuse connections, sending multiple messages per connection. Google Workspace SMTP relay servers have protections in place to guard against Denial of Service (DoS) attacks. The SMTP relay and Gmail user sending limits are independent and are counted separately from each other. There are separate per-user sending limits published here for sending email using Gmail rather than SMTP relay.Customer limits are lower for customers who have not yet paid a bill: 100 total recipients per day, 50 total recipients in a 10-minute window.Customer limits apply to all messages relayed by the customer, including messages relayed from any of the customer's secondary or subdomains, as well as messages relayed from external addresses where one of the customer's domains is presented in the вЂњheloвЂќ argument.For example, when a given user relays 1000 messages to RecipientA and another 1000 to RecipientB, this counts as 2 for the per user limit, but 2000 for the customer limit. The per-user recipient limits are for unique recipients, while the per customer limits are for total recipients.If a customer exceeds this limit, users see the error '450 4.2.1 Peak SMTP relay limit exceeded for customer.' The maximum number of total recipients allowed per customer in a 10-minute window is approximately 9 times the number of user licenses in your Google Workspace account, with an upper bound of 319,444 recipients per 10-minute window for large customers.If a customer exceeds this limit, users see the error '550 5.7.1 Daily SMTP relay limit exceeded for customer.' The maximum number of total recipients allowed per customer per 24-hour period is approximately 130 times the number of user licenses in your Google Workspace account, with an upper bound of 4,600,000 recipients per 24-hour period for large customers.For small customers, these limits come into effect much earlier than the limits per user. These limits are determined by the number of user licenses in your Google Workspace account.

#Powermta smart relay free

This is differentВ thanВ increasing Gmail limits, which can be initiated by ending your free trial.

#Powermta smart relay trial

To increase SMTP relay limits for a trial account, you must pay a Google-generated bill. Important: SMTP relay limits are lower for trial accounts. In this case, they see a different error message based on limits per customer. Nor do we consider the address presented during SMTP authentication, which is turned on if you select the Require SMTP Authentication option, described below.ДЄny sender, whether or not they're a registered user, can also be prevented from sending messages if a customer relay limit has been reached. Addresses in the From: and Reply-to: fields are not considered. If the envelope sender is not a registered user, then the per-user limits don't apply. The message count is based on the address of the envelope sender presented during the SMTP relay transaction. However, RFC 5321В limits might block some transactions. Google servers can handle more than 100 recipients per transaction. If a user exceeds either of these limits, the sender receives the error '550 5.4.5 Daily SMTP relay limit exceeded for user.'

A registered Google Workspace user can't relay messages to more than 10,000 unique recipients in a 24-hour period.Read more at Gmail sending limits inВ Google Workspace. However, this can be lower if yourВ Google Workspace account is still in a trial-like period. The maximum number of messages a user can send in a 24-hour period is 10,000.