Most popular free SMTP server list to use a public SMTP server to send emails. SMTP server required while you send personal emails or business emails and email marketing.
On the internet there are a lot of companies offer free SMTP servers, few of them are very famous like gmail.com, yahoo.com, hotmail.com, outlook.com, aol.com, zoho.com, mail.com, gmx.com, etc.
These are also referring as a public SMTP host server. Free SMTP server having the limitations to send an email per day limit. The limitation to avoid spamming in marketing emails.
Important
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What is my hostname?
If you would like to use your own mail server using your own domain hosted on a server. For example, your website hosted on the server like mydomain.com, and then you use mail.mydomain.com for an outgoing and incoming mail server. If you got any issue contact your web hosting provider.
Free SMTP Server List & Port Number:
By default SMTP server port work with port number 25 (alternate SMTP port 26) without using SSL. But in general, all the public SMTP servers use SSL certificates on their servers. Find the default SMTP port list here.
Default Server Ports:
SMTP Server (Outgoing Server)
Server type (Non-Encrypted) Authentication type (None) Port No 25 and 26
Server type (Secure TLS) Authentication type (StartTLS) Port No 587
Server type (Secure SSL) Authentication type (SSL) Port No 465
POP3 Server (Incoming Server)
Server type (Non-Encrypted) Authentication type (None) Port No 110
Server type (Secure SSL) Authentication type (SSL) Port No 995
IMAP Server (Incoming Server)
Server type (Non-Encrypted) Authentication type (None) Port No 143
Server type (Secure SSL) Authentication type (SSL) Port No 993
Free SMTP server list to send emails
Gmail SMTP server
smtp.gmail.com SSL 465
smtp.gmail.com StartTLS 587
pop.gmail.com SSL 995
Note: you need to enable POP3 from your Gmail account settings.
Login to your account and enable POP3.
You also need to enable “less secure apps” (third party apps) in the Gmail settings:
https://support.google.com/accounts/answer/6010255?hl=en
Outlook.com
smtp.live.com StartTLS 587
pop3.live.com SSL 995
Office365.com
smtp.office365.com StartTLS 587
outlook.office365.com SSL 995
Yahoo Mail
smtp.mail.yahoo.com StartTLS 587
pop.mail.yahoo.com SSL 995
AOL.com
smtp.aol.com
pop.aol.com
Hotmail
smtp.live.com SSL 465
pop3.live.com SSL 995
Zoho Mail
smtp.zoho.com SSL 465
pop.zoho.com SSL 995
Mail.com
smtp.mail.com StartTLS 587
pop.mail.com SSL 995
GMX.com
smtp.gmx.com StartTLS 587
pop.gmx.com SSL 995
Conclusion:
Much individual and business used free email services for multiple purposes. Here is the list of the most common free SMTP server list. If you know any other popular service provider not listed here, just comment on the name we will add those.
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