RayJayco wrote:
IMAP is Instant Messaging Protocol. When phones are used for email and you use POP3, when an attachment is received, no other message will be able to be received until the attachment is fully downloaded...
With IMAP, you get all of the emails and only DL the attachments that you want to see, avoiding a 'log jamb'...
IMAP meaning: (Internet Message Access Protocol)
Like the OP, you are generalizing (no definition of what app is being used on a phone to access an email account or what server hosts the email account you are accessing) so your statement is only true in some environments.
Not a criticism of RayJayco but just a comment about all the responses to the OP that, while well meaning, are not based on sufficient definition of ones environment. This leads to irrelevant suggestions and outright false assertions (mostly related to IMAP vs POP3) depending on the answer to what email access app and email account server(s) one is accessing.