Sending with Gmail doesn’t work… What to do?

This article refers to MailPoet 2

If you're looking for MailPoet 3 articles, please go to MailPoet 3 Knowledge Base

We are not recommending Gmail anymore, for all the reasons listed below and more! Try a professional sending provider instead.

In June of 2016, Gmail will change its DMARC policy from p="none" to p="reject." This means any message sent using in the FROM address, will have to originate from Gmail's infrastructure. Therefore, if you are not sending with Gmail, you can't use a Gmail address in a FROM header in your newsletters. Learn more.

There are two main reasons why sending with Gmail will not work.

  1. Google's security system has blocked the IP of your server
  2. Your host is blocking some outgoing ports

1. Google's security system has blocked the IP of your server

Google security system is actually pretty cool, if somebody gets his hands on your Gmail's password, well he won't be able to do much, unless he is using your IP address. Why? Because when Google spots an unusual IP address trying to connect to your account it will deny it access and will send you an email and eventually a text message on your mobile phone.

When you send a test email from MailPoet's Settings and you get the following message : " SMTP Error: Could not authenticate. | SMTP Error: Could not connect to SMTP host." then you might be entering this case scenario

The email you will receive to notify you of that unusual access will be as follow : 

Allow new IP's in Google account

In your case when you setup your site to send with your Gmail account, you want to allow a new IP to use your Gmail's credentials. In order to allow a new unrecognized app simply go to, find the line that concerns you and allow access.

2. Your host is blocking some outgoing ports

If you're trying to send from Gmail and it doesn't work, rest assured your problem is common. Especially if you're hosted on a shared server (hosting plans which cost a few bucks a month).

To verify, go to MailPoet's Settings > Sending Method and try to send a test with this button:

Check to see if you get this an error in which " Connection refused" is displayed, like this:

This means your host is definitely blocking the port needed to connect to Gmail's SMTP service.

If the port is blocked, what can I do?

You'll need to switch sending method. Try sending a test mail with the sending method " Your own website".

The limit of emails you can send from a shared hosting plan varies. See our list of limits.

Alternatively, we recommend getting a professional sending provider. They are cheap for small senders, require a bit of a setup, but offer the best deliverability. Read more on SMTP providers.