There are a few very common reasons why you may not be able to send emails using our email hosting.

Are your email settings are correct?

Make sure the email account username and password that you enter in your email client are correct. The details you'll need to be using are found below:

Account type: IMAP

• Incoming mail server: imap.stackmail.com.
• Outgoing mail server: smtp.stackmail.com.
• Incoming server port (IMAP): 993
• Use the following type of encrypted connection: SSL
• Outgoing server port (SMTP): 465 (or 587)
• Use the following type of encrypted connection: TLS

 Are email sending limits being hit?

Our mail platform has several limits in place in order to protect the reputation of the mail platform and prevent large quantities of spam emails being sent. Currently, our mail limits are as follows:

Web servers: 500 emails a day.
Mailboxes: 8000 emails a day.
Message size/attachments: our webmail system accepts attachments up to 32MB in size, and the maximum message size in our network is 50MB.

If any of these limits are breached, then it won't be possible to send mail from that hosting package or mailbox. In the case of the message size/attachment limit, you'll simply need to look at reducing the size of the email or the attachment being sent.

Is the mailbox disabled for suspicious activity?

If you're receiving the following error when trying to send that the mailbox may have been disabled for sending suspicious emails. 

SMTP: Error (550): Failed to add recipient “[email protected]” (Sending mail from this address has been disabled due to suspicious activity).

If you've received this error, please get in touch with our Support Team, they'll be able to get this resolved for you. 

How do I help Vector7 find the best solution?

These steps should help you provide helpful and effective information for our support team.

1) It's best for us to determine exactly what you are seeing, so we'd recommend sending a screenshot of the error you're receiving. From there we may be able to determine from the above guide why you may be having issues. e.g. (Sending mail from this address has been disabled due to suspicious activity)

2) We'd recommend checking the settings within the mail client, it may also be helpful to send a screenshot of these to. We'd then recommend comparing those against the recommended settings above.

3) Specific examples will always help, such as which mailbox you're sending from, and when you sent an email, did you receive a bounceback email and what did it say?