What is a sending limit in email?
Sending limit in email: the meaning
Nearly every mail provider applies such a threshold, for example per hour or per day. Stay under the limit and you won't notice anything; go well over it and sending is temporarily blocked. It protects you and the reputation of the mail server.
Explanation
For ordinary business correspondence you'll rarely run into a sending limit. If you start sending larger volumes, such as a newsletter to many recipients at once, it does come into play. Such bulk mail also calls for a different approach to avoid ending up in spam. Read more about that in newsletter or bulk mail ending up in spam.
Example
You want to send an announcement to 500 customers from you@yourbusiness.be, all at once. A sending limit may slow that down. If you send in smaller groups or use a service meant for bulk mail, it goes more smoothly and you're less likely to end up in spam.
Good to know
A sending limit isn't there to get in your way, but to prevent a hacked account from firing thousands of spam messages out into the world in a short time, which would damage the reputation of everyone on that server. If you notice you're hitting a threshold, that's usually a sign that your task belongs to bulk mail rather than ordinary correspondence. Split large sends up or use a service built for it, and you'll stay out of trouble.
Related concepts
Sending larger mailings? Newsletter or bulk mail ending up in spam helps you get it right at your own pace.