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Email (electronic mail) is a digital messaging service that enables users to write, send and receive messages in electronic form. Email messages usually appear in text or image form and may also contain attachments, such as files, images, videos, etc. Email messages are forwarded by the email server to the recipient’s email address.
550 email errors
Explanations of the most common 550 SMTP error messages (e.g. ‘Sender verify failed’) and suggested solutions.
Are email addresses case-sensitive?
Does the use of upper and lower case matter in an email address? It never matters for the domain part; according to the standard, it does matter for the part...
Explanation of the various EXIM status codes
A brief overview of the four categories and meanings of the status codes (2.X.X, 4.X.X, 5.X.X) in the Exim email client.
Finding out your Outlook version
How can you find out exactly which version of Outlook is running on your computer, on both Windows and Mac?
Hourly email sending limit: how many emails can I send?
How many emails can be sent per hour from cPanel, WordPress and email hosting plans? What counts towards this limit? What happens if the limit is exceeded? And what is...
How big is my mailbox, and how can I free up space?
How big can an email inbox be, how can you check how much space is being used, and how can you free up space in it?
How can I send large files by email?
Sending large files by email: why there are attachment limits, and what works as an alternative: cloud links, uploading to your own hosting, compression or SFTP.
How do I set up an automatic reply (autoresponder)?
How do you set up an automatic reply (autoresponder) for an email account in cPanel, for example, whilst on holiday or away from the office?
How do I set up an automatic signature in my email account?
How to set up an automatic email signature in Roundcube webmail, Outlook, Thunderbird, Apple Mail and on your mobile phone, with tips on creating a good signature.
How do I set up email forwarding?
How can I set up email forwarding in cPanel so that emails sent to one address are automatically forwarded to another mailbox?
How do I set up my email account in Gmail as a secondary account?
Managing your own domain email address in Gmail following the discontinuation of POP3 downloads: forwarding from cPanel and sending emails on behalf of your domain address.
Is email secure?
How secure is email? What does TLS protect and what doesn’t it protect? How can you protect your account, and what should you do if someone has gained access to...
My email account has been hacked: what should I do?
Unfamiliar emails in your Outbox, unknown forwards, bounced emails? Here’s how to block attackers from accessing your mailbox on your cPanel and web hosting plan.
POP or IMAP: which protocol should I choose?
POP3 or IMAP: what is the difference between the two email protocols, and which one should you choose if you have multiple devices?
Sending encrypted emails: S/MIME and OpenPGP
When is end-to-end email encryption required, how do S/MIME and OpenPGP differ, how to set it up in Thunderbird, and what encryption does not protect.
Setting up email in the iPhone and Android Mail apps
How to add an email account using your own domain to the iPhone Mail and Android Gmail apps using IMAP settings.
Setting up email on Android using the Gmail app
Adding a mail account from your own domain via IMAP in the Android Gmail app: on cPanel hosting and web hosting, using the correct servers, without any certificate errors.
Setting up IMAP in Apple Mail on a Mac
Adding a mailbox to the Mac Mail app: automatic setup using a configuration profile and manual setup on cPanel hosting and web hosting.
Setting up IMAP in Outlook (new Outlook for Windows)
Adding a mail account for your own domain in the new Outlook for Windows app using IMAP, on cPanel hosting and web hosting, with the correct servers and ports.
Setting up Thunderbird for IMAP
Adding an IMAP mailbox in Thunderbird on a computer and on Android: automatic and manual setup, servers, ports (993, 465), folders, certificate error.
Using Webmail on your mobile phone
Accessing your mailbox from a mobile phone or a web browser, without an app: log in to webmail via cPanel on your web hosting account, or via the icon on...
What are the parts of an email?
The structure of an email message: the header, the body and the other parts that make up an email.
What do CC and BCC mean for email recipients?
What do the ‘To’, ‘CC’ and ‘BCC’ fields mean? When should you use each one, and why is BCC important from a data protection perspective?
What is a DKIM record?
What is a DKIM record? How do digital signatures and selectors work? How can they be verified? And why do Gmail and Yahoo require them?
What is a DMARC record?
What is a DMARC record, how does it build on SPF and DKIM, what do the p, rua and adkim tags mean, and how can it be implemented step by...
What is a phishing email?
What is a phishing email, what tricks does it use, how can you spot one, and what should you do if you’ve clicked on a link or entered your details?...
What is a ‘catch-all’ email address, and when should you use one?
What is a catch-all email address, how can you set it as the default address in cPanel, what are the risks involved, and when is it better to use an...
What is an SMTP server?
What is an SMTP server, and how does a sent email travel via several intermediate servers to reach the recipient?
What is an SPF record?
What is an SPF record, how does it restrict which servers can send emails on behalf of a domain, and what is its history?
What is email address spoofing and how can I prevent it?
What is email address spoofing, how can you spot it from the email header, and how can you protect your domain using SPF, DKIM and DMARC records?
What is the difference between a newsletter service and standard email hosting?
Newsletter service or email hosting? Sending limits, list management, unsubscribing and the rules of the major email service providers: when to use which.
When was email invented?
Who invented email, and when? From Ray Tomlinson’s 1971 ARPANET email and the @ symbol, through SMTP and MIME, to modern-day email.
Which email client should I choose?
Which email client should you choose if you want to manage several email accounts conveniently from a single place?
Why do some emails end up in the spam folder?
Why does an email end up in the spam folder? Authentication (SPF, DKIM, DMARC), IP and domain reputation, content, recipient responses, and what you can do about it.
Why is my email delayed or not arriving?
Late or missing emails: here’s how to track their progress in cPanel, how to read the header, and why they may be delayed due to being placed on hold or...
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