Enabling SMTP Authentication on Outlook, Apple Mail, iPhone, iPad and Thunderbird

These are instructions on how to enable SMTP Authentication on common email programs. SMTP Authentication must be enabled on your email program / application in order to send outgoing email. This is a requirement on most mail servers.

SMTP Authentication simply means your email program is providing your full email address and password when you send outgoing emails to prove who you are. Most webmail programs have SMTP Authentication enabled by default, but many desktop email programs (like Outlook, Thunderbird, Apple Mail etc.) will disable it by default. It’s important to check if SMTP Authentication is required for every email account used or you could encounter error messages or bounce-backs with your outgoing emails. It only takes a minute to check if it’s enabled.

Please note that if you do not have SMTP Authentication enabled, this will decrease the “reputation” of your email address, and other email providers like Yahoo, Hotmail and Google Mail will be more likely to mistake your incoming emails for spam.

Please follow the relevant instructions below to verify SMTP Authentication is enabled.

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List of outgoing SMTP servers used in Ireland

Having issues sending email in Ireland from your wifi / broadband connection?  Make sure you’ve got the right SMTP settings.

Below is a list of smtp settings for the majority of ISP’s in Ireland:

Smart Telecom Outgoing SMTP Server

Irish Broadband Outgoing SMTP Server

Eircom Outgoing SMTP Server
mail1.eircom.net OR mail2.eircom.net

Magnet Outgoing SMTP Server

NTL and UPC Outgoing SMTP Server

Ice Broadband Outgoing SMTP Server

Vodafone Outgoing SMTP Server

O2 Outgoing SMTP Server

Clearwire Outgoing SMTP Server
smtp.clearwire.ie / mail.clearwire.ie

Digiweb Outgoing SMTP Server

Imagine Broadband Outgoing SMTP Server
mail.imagine.ie OR mail.gaelic.ie

Perlico Outgoing SMTP Server

3 Outgoing SMTP Server: Mobile broadband with 3 mobile Ireland

Gmail Outgoing SMTP Server
smtp.gmail.com (use authentication)
Use Authentication: Yes
Port for TLS/STARTTLS: 587
Port for SSL: 465

If you’re still having problems sending email from your office, business or home – call us now on 014852222