You have four option when composed a mail:

Send: Save mail in Outbox and send immediately, even sending fail then mail is still save in Outbox and queue.

Express: Foxmail can trace recipient's mail server IP address and deliver mails directly to recipient's mail box. By doing this, recipient will receive your mail right after you click Express. Please refer to E-mail Express for details.

Save to Outbox and Queue: Save the mails in Outbox but will not be send out immediately. Then you can send out multiple mails when finish them all.

Save as Draft: Save in Draft folder, you can send it next time after modification.

The above function can be executed by clicking the button on tool bar or Mail function list.

Which function should I use?

If you only want to send a mail, you can choose Send or Express, if you have to compose multiple mails, you can save them in Outbox when finished and send them out simultaneously. The operation is as follow:

Open Compose box and finish mail header and content then click Queue to save the finished mail into Outbox. Then go back to Foxmail main box to click Send button to send out the mails one by one. This function will not send out the mails save in Draft folder.

If the mail has not finished, please save it as a draft. Open the Draft folder and double click this mail to open it to continue the modification.