Instruction
1
Setting deferred sending e-mails in the mail Yandex

Fill in all the fields on the form to create a form letter in the mail Yandex and attach the required files. Button for sending the mail posted the link to attach files, highlighted in yellow and is divided into two unequal parts, Send and sign timer. Click on the timer icon opens the context field "send today XX:00". Set this field to the checkbox and specify the desired date and time.

You can change the date by clicking on the word "today", the calendar will appear where you can select the month and day. By analogy, edited and field with time. The timer is designed to time from 5:00 to 23:00, at intervals of one hour. Mail Yandex provides its user the ability to choose to delay sending emails for 1 year from the date of its creation.

After setting the date and time the send button will change to reflect the new settings. Click on it to save the message and set the time to send in the Outbox. Optionally, you can create a separate folder for pending emails.
2
Setting deferred sending emails in Gmail

In the postal system pre-installed Google no deferral feature of sending emails. To get this opportunity, download and install the Boomerang plugin for Gmail. There are versions of the plugin Boomerang for Gmail for Chrome and Firefox. After installing this extension in the window to create the letters will be a new link – "Send later". Click on it to reveal a contextual menu where you can choose a period of 1 hour, 2 hours, 4 hours, tomorrow morning, tomorrow afternoon, in 2 days or 4 days, a week or two, and after a month, or to set the exact date and time the email is sent using a timer, which is posted below the list of periods. Click "Confirm" and save the letter with the preset parameters.